Your Ultimate Guide to Buying an Air Conditioner

Which room air conditioner is perfect for your home? Check this ultimate aircon buying guide before you get your new AC unit

Want to beat the heat? The biggest aircon in your home may not be the best solution.

Heat and humidity can be extreme in Singapore due to its tropical nature and location. When the temperature rises, it becomes harder to move and do some tasks during the day, and it is uncomfortable to sleep at night. 

We know how brutal the heat can be. When heat peaks at 37 degrees Celsius (or above), it becomes harder to find comfort. There goes our essential go-to, the air conditioner. 

 

What is Air Conditioning?

Air conditioning is one of the most effective ways to feel cool and refreshed despite the smothering heat outside our homes. There is no wonder Singapore holds the highest per capita air conditioner installation rate among its neighbouring countries. 

Although considered a luxury item before, an air conditioner is now one of the most vital appliances for new built-to-order flats in Singapore due to its multiple benefits and the comfort that it provides. However, buying the best air conditioner in Singapore is not as easy as it sounds. 

We often focus on specifications, temperature, and price range when we buy appliances. But as air conditioners come with towering utility costs, it is important to choose a smart unit to maximise its efficiency and reduce future expenses with its purchase. 

With the range of choices here in Singapore, choosing an HDB aircon unit that suits your needs the most can be very daunting. Continue reading this ultimate buying guide to know what to look for when purchasing an air conditioner in Singapore. 

We'll walk you through some tips and specific features to look for when buying an air conditioner:

1. Air conditioner terms that we should be familiar with
2. Importance of air conditioning units
3. Types of air conditioning units to consider, with their pros and cons
4. Difference between inverter and non-inverter air conditioners
5. Specific features and technical aspects to look for when buying an air conditioner
6. Trusted air conditioner brands to check out in Singapore
7. Trusted installation services
8. Air conditioner efficiency and energy-saving tips

 

Some Helpful Air Conditioner Terms that You Need to Know

Determining the best air conditioner for your flat is not as simple as it sounds. Once you buy a new air conditioner unit for your flat, your regular expenses moving forward will change. You may either enjoy its function and efficiency or end up spending more but getting less. 

An air conditioner's function depends on highly specific aspects. It is vital to familiarise yourself with these terms and make the most of the money you spend on your air conditioner.

Cooling Capacity

An air conditioner's cooling capacity describes its ability to remove heat from space, making it cooler. This is measured in BTU.

Air Con BTU 

When looking for an air conditioner, you may have come across the term "BTU." But what is BTU in aircon and what does BTU mean?

Aircon BTU stands for British Thermal Unit, which is used for measuring thermal heat energy. The term describes the amount of heat needed to raise the temperature of one pound of water by 1°F. Specifically, BTU is used to measure the hourly amount of heat an air conditioner can expel from your space.

NEA Tick Rating

NEA stands for National Environmental Agency. NEA tick rating is used to determine the energy efficiency of an appliance. 

The higher the tick rating, the more energy-efficient the appliance is. Air conditioners with higher tick ratings are more expensive, but they come with lesser utility expenses like electricity bills afterwards.

Refrigerant

Refrigerant is a chemical compound, typically in the form of liquid or gas, in your room air conditioner that absorbs indoor heat and provides cooler air after reaching an air conditioner component such as the compressor and evaporator. Without the refrigerant, the air conditioner will not work.

Important: Because refrigerant exposure is hazardous to one's health, it is critical to conduct regular inspections to ensure that your AC unit is free of leaks.

These are the signs that an air conditioner has a refrigerant leak:

1. The unit shows insufficient cooling power
2. Noisy unit
3. The evaporated coils are frozen
4. The electricity bill is unusually high

The type of refrigerant your air conditioner contains is essential, especially if you aim for a more energy-efficient or environmentally friendly unit. Air conditioner refrigerants are not interchangeable. Using the wrong refrigerant for your AC unit may cause damage. The most common types of refrigerants are chlorofluorocarbons (CFCs), including R12, hydrochlorofluorocarbons (HCFCs), R22, hydrofluorocarbons (HFCs), R410A, and R134.

Inverter

The term "inverter" is probably one of the most familiar terms in this list. Inverter technology functions to control the air conditioner motor speed to save energy. 

Air Conditioner Compressor

The air conditioner compressor is the most vital component of an air conditioner. It circulates the pressure and temperature of the vapour refrigerant as it exits the evaporator coil. It compresses the refrigerant into liquid form, making it cooler while regulating the temperature of the space. In short, air conditioners can cool your room because of the compressor.

How Does It Work?

An air conditioner compressor is responsible for pushing heat and humidity to the condenser coil. 

The process begins with the motor. It powers the air conditioner compressor to raise the vapour refrigerant's temperature, leaving the evaporator coil. The increase in the refrigerant's temperature helps expel the heat from the indoor unit to the aircon condenser unit. 

The compressor turns the hot gas into liquid form. The hot liquid will then go down to the expansion valve, turning it into its cooler form. The compressor will then process the cooler AC fluid as a low-pressure gas.

Decibel

The sound of an air conditioner is measured in decibels (dB).

PM 10 and PM 2.5

PM or "particular matter," refers to a minute pollutant, a mixture of liquid and solid substances suspended in the air. Some particular matters are visible to the naked eye, like dust and smoke, but others are so small that they require microscopes to be seen.

Inhalable particulate matters come in various diameters. The most common ones are PM 10 and PM 2.5. PM 10 particles are generally 10 micrometres in diameter. These particles can be filtered by our nostrils before they enter our system. PM2.5, however, are smaller pollutants that are 2.5 micrometres in diameter. Because of their size, these particles easily enter the body without being filtered, causing possible harm to the body, especially the respiratory system.

There are air conditioning units that are designed to filter even these small particles to maintain not only a cool place but also a safe environment for your family.

HEPA Filters

HEPA or High-Efficiency Particulate Air filter is a mechanical filter known for its ability to trap harmful particles such as dust, dust mites, pet dander, pollen, and smoke particles. This works well to prevent allergies and asthma attacks caused by harmful particles and pollutants. HEPA filter-equipped air conditioners trap more air impurities, including smaller particles that cannot be filtered by our human mechanisms.

Understanding Aircon Compressor Dimensions in Singapore

Selecting the right aircon system in Singapore isn't just about choosing the model with the best cooling capacity; the dimensions of the aircon compressor play a crucial role too. A compressor's size can significantly impact installation options and efficiency in Singapore's compact living spaces.

Here's why paying attention to these dimensions is vital:

• Space Optimisation: In Singapore, where space is a premium, ensuring your aircon compressor fits neatly without taking up excessive room is essential. Properly sized compressors can be seamlessly integrated into service yards or balconies, leaving more living space for you and your family.

• Installation Requirements: The dimensions dictate installation logistics. Some residential areas have restrictions on the size of external units, making it imperative to choose a compressor that complies with local guidelines.

• Efficiency and Performance: The size of the compressor often correlates with the unit's capacity to cool. However, advancements in technology mean that more compact models can now offer impressive cooling efficiency, suitable for the humid Singapore climate without compromising on performance.

Benefits of Having Air Conditioners at Home

When buying air conditioners, it is crucial to assess if they will provide all the benefits that are supposedly attached to them. If you end up buying a cheap yet, less beneficial unit, you may not fully enjoy the value of what you spent.

Air conditioner units are often associated with high utility costs. But as time goes by and technology advances, newer air conditioners are now designed to be more energy-efficient, thus reducing the utility costs attached to them. Aside from their popular cooling effect, air conditioners offer more benefits and advantages. 

Air Conditioners Reduce Humidity and Prevent Heat Stroke

In tropical places like Singapore, heat-related health conditions are common. Such conditions include heatstroke and dehydration. The children and elderly are more susceptible to this health crisis. Having an air conditioner in your home helps minimise health risks caused by heat and humidity. 

Air Conditioners Can Also Regulate Temperature During Cold Weather

Aside from providing cool air during hot weather, air conditioners also offer a more comfortable temperature when the weather gets too cold. Getting an AC is more energy and cost-efficient than getting other heating systems for your home, which you will use for just a specific period. New air conditioner units provide the option to set your ideal temperature for both hot and cold seasons. Some also have sensor features that regulate the AC’s function based on your routine. Having air conditioners in your home means comfort is under your control.

Air Conditioners Provide Better Air Quality and Reduce Health Risks Caused by Pollution

Humidity and air moisture invite bacteria, mould, dust, other hazardous particles, and indoor allergens that can cause harm to your body in the long run. Such particles in your home cause allergies and asthma attacks. Your air conditioner acts as your ultimate filter against these dangerous elements, while also providing fresh air and a comfortable environment for you and your family. To make sure that your air quality is always at its best, choose an air conditioner unit with deep filter technology to capture smaller harmful particles like PM 2.5.

Air Conditioners Promote Comfort and Better Sleep

Discomfort is one of the biggest factors why we're having a hard time sleeping. A humid space, irritating sweat, and insects that love the warm weather are just some of the things that hinder us from having a good night's sleep. When an AC is installed in your flat, you will not need to open your window to let the air in. With this, you will reduce the noise and prevent insects from entering your room.

Instead of counting sheep, why not try to improve your surroundings by installing an air conditioner? Say goodbye to loud, uncomfortable, sweaty sleep and uninvited nighttime visitors. 

Air Conditioners Protect and Preserve Your Furniture and Home Items

Humidity shortens the lifespan of your best-loved furniture. High humidity creates too much moisture, which causes the production of mould. This results in damage to your furnishings, especially those that are made of wood. Reducing this moisture production in your home interior by getting an air conditioner helps you preserve your home items. More so, because of its ability to filter the air, it lessens the amount of dirt that sticks to your curtains, sheets, and pillowcases.

Air Conditioners Prevent Electronic Devices from Overheating

Our electronics and gadgets are bound to produce heat, especially those that need to be plugged in to function. Overheating these devices reduces their lifespan and can result in unexpected damage, such as computer shutdown and data loss. If you are working at home or want to preserve your electronics, consider getting an air conditioner for your home.

Types of Air Conditioner Units

Whether you are looking for the perfect unit for your new BTO or opting for a much-needed upgrade, knowing the appropriate air conditioner type for your home is important. Before investing in an air conditioner, let us become familiar with each common type first. Each type of air conditioner has its own pros and cons. But one thing is for sure: newer air conditioner units are more energy efficient than the older models. If you have a ten-year-old air conditioner model, you might want to consider getting a new one for your home.

Window Type Air Conditioner

A window air conditioner, considered the most common type, is a self-contained unit suitable for a single room or a small single-story area. All the components of a window air conditioner are enclosed in its compact body. This is ideal for smaller spaces. Window air conditioners are easier to install and can be transferred from one window or wall hole to another, as they can operate independently without an extra outdoor unit.

How Does a Window Type Air Conditioner Work?

As its name implies, a window air conditioner is placed on a window or wall hole, giving it two sides—the indoor side and the outdoor side. The unit includes a compressor, condenser, and coil or expansion valve. The indoor side of a window air conditioner blows cool air into the space while the outdoor part releases the heat absorbed from your interior. It contains a filter to regularly clean the air while expelling the impurities.

When buying a window air conditioner, be sure to take note of your window direction because window air conditioners are usually more efficient at blowing air in one direction.

Central Air Conditioner

A central air conditioner is ideal for larger spaces or homes. With its bigger cooling capacity, it can also be used to cool multiple areas of your homepacity, it can also be used to cool multiple areas of your home. This type of air conditioner uses a split system containing a separate indoor unit and an outdoor unit. The outdoor unit includes the compressor and condenser. The indoor unit, on the other hand, contains the evaporator coil and air handler. 

Central air conditioners are an excellent choice for maintaining an aesthetically pleasing space because they can be concealed on ceilings.

Like the window-type air conditioner, a central air conditioner releases indoor heat from its outdoor unit while maintaining cooler air inside. It uses a refrigerant to remove indoor heat. A central air conditioner is quieter than a window air conditioner. It is also more energy efficient because of its higher BTU. If you opt to get this type of air conditioner, consider the ductwork needed.

How does the Central Air Conditioner Work?

A central air conditioner uses an air handler fan to absorb the heat from your space. Once the heat reaches the evaporator coil, the unit regulates the heat as it dispenses cooler air. The refrigerant will then reach the condenser, which is responsible for expelling the heat outside.

Ductless Mini Split-type Air Conditioner

A ductless mini-split air conditioner is not a self-contained unit. But, as its name implies, a ductless unit does not need ductwork to operate properly. A mini-split type unit, like a central air conditioner, has two indoor and outdoor units.The indoor shell is relatively smaller and slimmer, while the outdoor piece is bigger and noisier. The outdoor unit includes the compressor and condenser, which are connected to the indoor shell through tubing. Since the compressor is placed outside, the indoor shell of this split-type unit is more silent than other air conditioner types. 

This smaller unit is higher in price but is more energy-efficient. It has wide blowers, thus producing more air. If you are looking for a more stylish piece that will not take much of the attention away from your home decor, a mini split-type air conditioner is perfect for you.

Portable Air Conditioner

A portable air conditioner is a movable cooling unit ideal for smaller spaces if you want to save money on installation. It expels the warm air through a duct or hose connected outside your window, but it does not require an extra outdoor unit. It can be moved easily with the help of built-in casters. A portable air conditioner produces more noise than other air conditioner types since its evaporator constantly evaporates heat and condenses cool air afterwards.

A portable air conditioner is an easy way to upgrade your home's ventilation because it does not require major wall hacks. It is cheaper than larger air conditioner units and can be moved from one room to another when needed.

The Differences Between Inverter and Non-inverter Air Conditioners

A non-inverter air conditioner is a standard air conditioner that has all the necessary functions an air conditioner has. However, this standard air conditioner is considered to have a low energy efficiency rating and notorious energy consumption. The inverter system is introduced to address the drawbacks of air conditioning technology.An inverter unit is known to be more energy-efficient and versatile compared to a non-inverter unit.

The main difference between an inverter air conditioner and a non-inverter type is how the compressor adjusts during temperature changes. 

Inverter air conditioners include a controllable compressor whose speed can be regulated to adapt to extreme temperature changes. When it is too hot, the compressor adjusts to lower the temperature. When it is too cold, the unit will give you the ideal heat. For a non-inverter air conditioner, on the other hand, the compressor will work as usual regardless of the room temperature. This process tends to produce more noise and consume more electricity than an inverter unit.

Energy Usage and Function

An inverter air conditioner is an excellent choice if you are opting for an eco-friendly AC unit. Since its compressor changes speed based on the temperature, it uses less unnecessary energy to function. Since inverter air conditioners are more energy-efficient, they are a better choice to reduce your electricity bill. 

Due to its regulated compressor speed, an inverter air conditioner produces less noise than a non-inverter unit. This includes a more silent start noise where the compressor adjusts more smoothly. 

Suppose you want your room to cool faster. In that case, an inverter air conditioner unit can efficiently do the job since an inverter unit works harder when it starts and then diminishes once the desired temperature is met.

Cost

Non-inverter air conditioners are notably cheaper than inverter varieties. Inverter air conditioners also require more installation time and cost than non-inverter models. The initial cost is one of the things that you should consider during the purchase. Also, some parts of an inverter air conditioner are more difficult to replace once damaged. Because inverter-type air conditioners use relatively new technology, repairing one is more challenging than repairing a non-inverter variety.

However, if you opt to save money in the long run, considering an inverter unit is more practical. It consumes less electricity than a non-inverter unit, thus, helping you save on your electric bills. Non-inverter units are known for their high electricity consumption, so if you buy a non-inverter variety, be ready to see your electricity bill skyrocket. The lifespan of an inverter air conditioner is also longer than that of a non-inverter variety.

Inverter Air Conditioner	Non-inverter Air Conditioner
Energy Efficient	Uses more electricity
Provides consistent cool air flow	The compressor needs to work double time to cool a room, thus affecting its overall cooling efficiency
Faster cooling process	Slower cooling process
Helps you save electricity bills	Not that friendly when it comes to electricity bills
Operate quietly	Noisier
Has longer life span	Due to its tendency to overwork its compressor, a non-inverter unit has a shorter life span
More expensive initial cost	Cheaper than an inverter unit
Installation process is more complicated	Easier to install

 

Aspects to Consider When Buying an Air Conditioner

Once you buy an air conditioning unit, you will be stuck with it for years, if not decades, so it is vital to choose one that will efficiently fulfil its functions and benefit you in the long run. 

Buying an air conditioner does not only involve your current budget. It also involves some factors like comfort, future electric bills, and repair costs. When looking for an air conditioner, several physical and technological aspects must be considered to make sure that you get what is best for your home and your budget.

Check the Size of Your Air Conditioner

The first and easiest factor that you usually consider when buying an air conditioner is the size of the unit compared to the size of the space that you want to cool. 

Smaller units will not efficiently cool a bigger room. However, a bigger unit is not always the best when it comes to buying your air conditioner. An oversized air conditioning unit will cool your room in an instant, but it will leave your space clammy as it does not allow more time to remove the moisture and humidity in your area. On the other hand, a smaller AC compared to your room size will struggle to give you your desired temperature. This means that your air conditioner will run with its normal function, consume the same amount of electricity, and still give you an unsatisfactory temperature.

Below are the indications of having an undersized air conditioner for your flat

Check Your Air Conditioning Unit’s Cooling Capacity

As described above, the air conditioner's cooling capacity is described as its ability to remove heat from a space and maintain cooler air during its operation. The cooling capacity is measured in British Thermal Units (BTU). The definition of BTU might be a little complex, but calculating the right BTU for your flat is surprisingly easy.

To get a BTU estimation for your flat, you can do your computation by converting your flat's area in square metres to square feet and multiplying it by 25. A typical HDB needs 9,000 BTU. The closer the BTU is to the size of your room, the more efficient an air conditioner is. However, there are other considerations, like the number of people occupying the area, the floor location of your flat, the location's exposure to sunlight, etc. 

Consider the Location of Your Flat

The location of your flat plays a big role in the temperature that you experience. The higher your location is, the closer you are to sunlight exposure, meaning you experience higher temperatures. If your flat is located in a place that receives more exposure to sunlight, it is recommended to increase your BTU estimation by 10%. 

In addition, if your room receives more shade most of the time, you can reduce your BTU by 10%. This is because areas that receive more shades are less humid than those that are directly exposed to the sun.

Consider the Number of People Occupying the Flat

Notice how a crowded place is hotter than a less-occupied space? This is because the human body naturally generates heat. This heat also affects the temperature of your home. The more people occupying the flat, the hotter the place will be. To maintain a conducive space for your family, if you have more than two people occupying your flat, add 600 BTU per person when buying an air conditioner.

Consider the Amount of Heat Generated by Your Home Appliances

Home appliances also generate heat, especially those in your kitchen and the computer in your home office. It is recommended to add 4000 BTUs to your estimate for areas with electrical appliances.

Determine the Type of Room You Want to Cool

Various types of rooms have different air conditioning needs. A master’s bedroom, for example, is relatively smaller than your living room. Adding the number of occupants in a living room compared to a master’s bedroom, a living room will need a higher BTU. On the other hand, although living rooms are usually bigger than the kitchen, the kitchen may require a higher BTU because of the other heat-generating appliances present in the area.

Consider the Size of the Room You Want to Cool

A 3-room HDB is about 60–65 square meters. It usually includes one bedroom, one master's bedroom attached to a bathroom, a kitchen, and a living room. A master's bedroom typically requires 9000 BTU to be cooled. A more crowded living room, where everyone gathers, requires approximately 12000 BTU. These estimates differ depending on the number of rooms in your flat and the number of people occupying it. For common flat bedrooms, a 6,500 BTU air conditioner will do its job. A BTU of up to 9,000 is needed for dedicated home offices to prevent overheating your computer and other electrical office equipment.

Take a look at the rough BTU scale below. Note that this scale is based on the default ceiling height of 8 feet.

Room Type	Estimated Size	BTU Needed
Common HDB Bedroom	15sqm	6,500 BTU
Larger Room/ Master’s Bedroom	15sqm to 18sqm	9,000 BTU
3 Room Flat Living Room/ Condo Master’s Bedroom	20sqm to 24sqm	1,200 BTU
4 Room Flat Living Room	30sqm to 36sqm	1,800 BTU
5 Room Flat Living Room/ Condo Unit Living Room	40sqm to 44sqm	24,000 BTU

BTU Adjustment Scale Based on Different Factors

Considerations	Estimated Adjustment Needed
If the room is highly exposed to sunlight	Add 10% to the initial calculated BTU
If the room is heavily shaded	Remove 10% to the initial calculated BTU
If the room is occupied by more than 2 people	Add 600 BTU per additional person
If the room is filled with other electrical appliances	Add 4,000 BTU

 

For split-type air conditioners, each indoor unit consists of different BTUs that can fit your room’s requirements. Check out Megafurniture’s air conditioners to get the best unit for you and your room’s requirements.

What happens when the BTU of your air conditioner is too low for your room?

If the BTU is too low, your air conditioner will take more time to cool your space. It will also have a hard time maintaining the temperature that you want to achieve. This results in heavy energy consumption and, thus, higher electricity bills.

What happens when the BTU of your air conditioner is too high for your room?

Higher BTU does not always imply better. An efficient air conditioner operates to cool the air in your area while removing moisture and humidity. When your air conditioner is bigger than your room or the BTU is high, it works faster at cooling your room, but the moisture will remain in the air, making the area humid as the moisture condenses. This results in a cool yet sticky and uncomfortable feeling. Like a small BTU air conditioner, a bigger one compared to your space consumes more energy than what you actually need.

 

When the BTU is too high	When the BTU is too low
Your space becomes too cold and clammy	Does not provide enough cool air for your space
It does not dehumidify the area very well, resulting to discomfort	Consumes too much electricity since it has to work extra hard to cool your area
It uses more electricity while giving you an undesired temperature range	Your unit is more prone to wear and tear

 

Before buying your air conditioner, you have to make sure that you choose just the right BTU for your space to avoid discomfort and unnecessary electric and maintenance bills.

Check the Air Conditioner System Number

Air Conditioner System Numbers: What Do They Mean?

If you come across air conditioner varieties in online stores, you will see a system number attached to the unit of the air conditioner. These numbers pertain to the number of indoor units connected to one air conditioner condenser or compressor (outdoor unit) through an outlet. This system is useful if you want to cool more than one room, considering the renovation and installation limits for HDBs.

The cooling mechanism in System 1 consists of one (1) indoor unit connected to one (1) condenser.System 2 has two indoor units and one outdoor unit. It means that the condenser can connect to two (2) indoor units at the same time. The list goes on. Other combinations are 3+1, with three (3) indoor units attached to two (2) outdoor units.

After calculating the needed BTU for your flat, it is now time to check the number of units you want to purchase. Indoor units vary in BTUs, so it is vital to know what rooms you want to cool and what BTU you need for each room. For a 4-room flat, you would need an estimate of 9,000 BTU for your bedroom and 1,800 BTU for the living room. An estimated total of 4500 BTU is needed to accommodate every room. A System 4 air conditioner with three 9,000 BTU units and one 1,8000 BTU unit will work well.

If you wish to upgrade your cooling system, especially in the kitchen where you use multiple heat-generating appliances, you can opt for the System 3+1 variety.

What Is the Difference Between System 4 Units and System 3+1 Units?

System 4 has four (4) indoor units connected to one (1) condenser unit, while System 3+1 has four (4) indoor units connected to two (2) condenser units. System 3+1 presents a higher BTU rate than System 4.

However, System 4 is less expensive to purchase and install. System 3+1 consumes more electricity than System 4 because it uses two compressor units. The advantage of a System 3+1 unit is that you can turn off one compressor while still keeping the other. If one of your compressors needs maintenance, you can still use the other to accommodate your indoor units.

As for system 5 aircon, it takes climate control to the next level with five indoor units connected to a single, powerful condenser, blending maximum flexibility with efficient design.

Ensure Your Unit's Energy Efficiency

When buying an air conditioner in Singapore, make sure to check the unit's EER, or energy efficiency ratio. To measure a unit's energy efficiency, the Tick-Rating System from the National Environment Agency is used. 

If an air conditioner has a tick rating of 1, it means that its energy efficiency is low. In contrast, a unit with a tick rating of 5 means it has excellent energy efficiency. Most air conditioner varieties fall under the 3-tick category, while some reputable brands are accredited with higher tick ratings. However, having a 4-5 tick rating does not automatically mean that you have everything that you need to cool your flat. Aside from the tick rating, you should also know if your air conditioner unit can cool your space while using the least amount of electricity. 

Why is it essential to get a unit with a high energy efficiency rating?

A higher rating means that the air conditioner unit consumes less energy while efficiently performing similar tasks as other units, thus lowering electricity bills and reducing the harm it may cause to the environment.

When purchasing an air conditioner, consider getting one with a higher efficiency rating to save more energy in the future.

Know the Type of Air Conditioner that is Best for You

We discussed the types of air conditioners earlier in this article. Each type offers its fair share of pros and cons. To know what type is best for your flat, check your initial budget, expected monthly utility bills, and air conditioning requirements (location, number of rooms, number of people living in the flat). 

Check the Noise Level of the Air Conditioner

Excellent ventilation promotes a more comfortable and healthier night's sleep.However, if your air conditioner is too loud, it will still be hard to get the sleep that you want. To ensure that you are purchasing a quieter unit, you have to look at the unit's decibel rating. 

An air conditioner's sound level is measured in decibels (dB). How do you determine the ideal dB for your air conditioner? Here's a quick preview of natural sounds along with their decibel levels. 

• Rustling leaves, whisper- 30 dB
• Average room noise- 40 dB
• Car interior at 60 mph- 70 dB
• Normal breathing- 10 dB

The quietest air conditioning units range from 50-60 dB. Some familiar sounds within this range are:

• Refrigerator- 50 dB
• Moderate rainfall- 50 dB
• Large office- 50 dB

The quietest air conditioning units are usually silent enough not to disturb you while doing your everyday tasks. Some air conditioner varieties measure noise levels in dBA or A-weighted decibels, which is a measurement to test if a sound is vital for healthy listening. It describes the human ear's response to noise. By using dBA, we get a better idea of how noise can affect or damage your hearing. For air conditioners, the higher the cooling capacity, the higher the dB or dBA. 

The noise of an air conditioner depends on its location, compressor speed, and other parts that may contribute to its sound. White noise from air conditioners is healthy and may help you fall asleep faster. Inverter air conditioners are quieter than window AC and portable varieties. This is because the inverter ACs’ compressors are located outside the home.

When you buy air conditioners online, look for the complete details of the product, including the dB or dBA of the item, to ensure that you get what is best for you. It is also vital to ask via live chat or messaging to ensure that you will end up with a satisfactory purchase.

Installation and Maintenance

Aside from the main unit's price, it is also important to consider your air conditioner's installation costs and maintenance. Suppose you plan to buy a wall-mounted air conditioner for your HDB unit. In that case, you will need to secure an installation report and get professional services from BCA accredited air conditioner technicians.

At Megafurniture, we work with BCA-accredited technicians to make the installation process faster. Our customer advocates are also hands-on in arranging schedules to install air conditioners at the most convenient time. A complimentary dismantling service is also provided for the disposal of old air conditioner units.

Always opt for a 12.7 mm or 1/2" insulator pipe during installation instead of the standard 1/4" pipe. This is because 1/4" pipes are more prone to leakage. Broken or faulty insulation results in energy losses and premature damage.

When looking for an air conditioner unit, consider one with warranty offers, especially if you regularly plan to use your air conditioner. Most units come with a one-year warranty. You have the option to extend your unit's warranty to minimise the risk of paying more for future repair costs, considering its price in Singapore.

Choose a Unit with Notable Comfort Features

Newer air conditioner units present comfort features that allow you to adjust your temperature to the most convenient level. This is helpful when the temperature is not that extreme. Air conditioner units with versatile temperature adjustments are more expensive but are definitely worth it because they provide individualised comfort and are more energy-efficient. 

Plan Your Budget

One of the main concerns about buying an air conditioner is your budget. How much do you have on hand? How much are you willing to spend in the future on your electricity bill and maintenance? On average, you can purchase a good air conditioner for approximately $1,000 to $1,500 for a single unit. For split-type air conditioners, the price increases depending on the number of units added. Smart air conditioners are also notably expensive but are more energy efficient. Window and portable air conditioners are cheaper than other varieties. However, they can only cater to a single room or a small space. Newer air conditioner varieties like inverter ACs and smart air conditioners are more expensive but are champions in energy efficiency. As we discussed earlier, non-inverter varieties are less costly than inverter air conditioning units. However, they may result in towering electricity consumption afterwards, while inverter units spend less energy. 

When you buy an air conditioner online in Singapore, you have the option to purchase a unit by instalment without interest rates. This will help you buy your desired air conditioner unit without the pressure of paying for it all at once.

Check the Size of Your Air Conditioner- It Matters

Size matters when it comes to buying an air conditioner for your flat. Although smaller air conditioner units are more aesthetically pleasing and cheaper, that does not necessarily mean that they are always what you should opt for. The good news is that innovative inverter air conditioners are slimmer and more compact than traditional wall-mounted air conditioners. Because of this, new air conditioner varieties blend into your room's aesthetics better. You must be familiar by now with the fact that one of the biggest factors explaining why your monthly electric bill drastically increases after getting an air conditioner is the inappropriate size and BTU of the unit compared to your room size. Before buying an air conditioner, compute the right size and BTU first. 

Be Familiar with the Construction Material of Your Home

Older construction materials like brick walls absorb heat faster and retain them longer.

Consider the Insulation of Your Home

If your flat is well insulated, it will take less time and energy to be cooled. This is more applicable for newer housing or rooms. Older establishments might not be as insulated. Thus, they require air conditioning units with bigger energy capacities and higher BTUs. Check the door and window gaps. If your home has a noticeable gap, your AC will have to work harder. In this case, consider adding to your BTU.

Look for Units with Efficient Filters

Aside from cooling or heating the place, air conditioners also function to improve the air quality in your flat. 

You may think that your home is the safest place, especially during this time, but indoor air quality is more contaminated than outdoor air. This is because all the outdoor contaminants that enter through the walls, the door, and the people who enter your place are contained and locked inside your space, especially when there is no adequate ventilation. 

Air conditioners have built-in filters that help reduce impurities like dust and pollen in your indoor air. As your air conditioner unit absorbs heat and replaces it with cooler air, it also pulls impurities along with it. Some air conditioners take this a notch higher by including PM 2.5 and HEPA filters and other filter technologies to dispense smaller and more harmful contaminants. Such technology includes Nanoe technology by Panasonic. If you are looking for more heavy-duty air filters, air purifiers and dehumidifiers also provide great solutions for your home.

Installation Tips and Offers

Your air conditioner's efficiency depends not only on the quality and brand of the unit itself. There are also other factors that you should be carefully working on, like installation. 

Look for an Authorised Air Conditioner Installer

It is highly important to look for BCA accredited contractors to install the AC unit in your flat. This is to ensure that your home's electrical load can accommodate your air conditioner. Flats built or that have undergone the Main Upgrading Programme or Home Improvement Programme (HIP) can accommodate higher capacity electrical equipment like air conditioners.

 

Other Considerations When Buying an Air Conditioner

Aside from the aspects mentioned above, there are also physical considerations when it comes to buying your air conditioner.

Airflow direction

Some air conditioner units have adjustable louvres to direct the airflow to specific areas of your home that you want to cool. 

Controls

Air conditioners have basic ON and OFF controls, temperature adjustment, and fan options. Air conditioning units with remote controls are more convenient to use. Other varieties also include timers, sleep options, and precise temperature monitors. More advanced air conditioning units can be connected to your mobile device.

Plug type and voltage

Check the voltage and amp requirement for your HDB or BTO before buying an air conditioner. This is to make sure that your air conditioner fits the electrical needs in your home. Otherwise, it is dangerous. Mismatched electrical voltage, for example, from a higher input voltage, can cause fires or electrical accidents. Incompatible electrical voltage can also cause severe damage to your air conditioner.

Singapore's wall outlet voltage is 230V with a standard frequency of 50Hz. The power plug type is G. 

How many rooms do you want to cool?

For a single room, a window-type air conditioner or a portable variety will do the job. But if you want to cool a four-room flat, you might want to consider a System 4 air conditioner, which includes four units that can cool all four rooms.

How small or big is your space?

A typical HDB or BTO room needs 9,000 BTU to cool down efficiently. For larger and more occupied spaces like the living room, at least 12,000 BTU are needed.

What type of air conditioner do you plan to buy?

The air conditioner type that you will choose highly depends on your area's requirements. When selecting the type of air conditioner you want to purchase, you should also consider the installation requirements and HDB regulations.

What air conditioner brand do you prefer?

Choose a trusted, reputable brand for your flat to ensure that you deserve the quality. Also, choose a manufacturer or retailer that is responsible and accommodating enough to arrange a smooth, hassle-free installation process. Brands like Mitsubishi, Daikin, Midea, and Panasonic are the smart go-tos in Singapore.

 

Air Conditioners to Buy in Singapore

There is a range of reputable brands to choose from when buying air conditioners in Singapore. Among the high-quality items on the market, we listed the best, most efficient, innovative, and energy-saving air conditioners you can find at Megafurniture.

Daikin Smart Inverter Air Conditioners

Daikin presents a wide range of air conditioner units, from System 1, System 2, from 2-tick varieties to more innovative and energy-efficient 5-tick types. Whether you are looking for affordable units or more advanced ones, this reliable brand has everything you are looking for. 

Here are some of our picks from Daikin:

Daikin System 2 Aircon WIFI MKS50TVMG-1XCTKS25TVMG-1XCTKS35TVMG

This air conditioner package includes one (1) outdoor unit and two (2) indoor units, both with a 5-tick NEA rating. One indoor unit has 9,000 BTU, perfect for your bedroom, while the other unit contains 12,000 BTU, ideal for the master's bedroom or your living room. 

The unit has an intelligent control system connected to an app that lets you change the thermostat wherever you are in your home or even when you are outside your home. The app's features vary based on your air conditioner model. It contains a PM 2.5 filter to improve your air quality.

Notable features:  Cooling capacity per unit: 1X9000, 1X12000 BTU  NEA Rating: 5 Ticks Presents a built in smart control system Includes a PM 2.5 filter for thorough air cleansing and high quality ventilation 19 dBA Sound Level Intelligent Eye Sensor for personalised cooling comfort and energy saving

 

Daikin System 4 Aircon Wifi MKS80TVMG-3XCTKS25TVMG-1XCTKS50TVMG

Get personalised comfort with this innovative air conditioner unit. It boasts its intelligent eye sensor technology, which detects body movements across the room while operating. If the air conditioner is left unattended in an empty room, it will automatically go into its power-saving mode. This technology does not only give you your ideal temperature, but it also helps save energy. 

The package includes three 5-tick 9,000 BTU indoor units and one 1,800 BTU unit. It contains a PM 2.5 filter to trap pollutants and allergens.

Notable Features Cooling capacity per unit: 3X9000, 1X18000 BTU  NEA Rating: 5 Ticks  Presents a built in smart control system Includes a PM 2.5 filter for thorough air cleansing and high quality ventilation 19 dBA Sound Level Intelligent Eye Sensor for personalised cooling comfort and energy saving

 

Daikin System 4 Aircon Wifi MKS90TVMG-2XCTKS25TVMG-1XCTKS35TVMG-1XCTKS71TVMG

Delight in the heavy-duty cooling power of this innovative System 4 air conditioner. If you wish to improve the air quality in your home, this unit is the best choice for you. This air conditioner comes with two 9,000 BTU indoor units for your standard room and master's bedroom, one 12,000 BTU unit for your kitchen, and one indoor unit with 24,000 BTU for larger or more occupied spaces like the living room.

It has a smart eye sensor for personalised cooling comfort and a PM 2.5 filter for improved air quality.

 

Notable Features Cooling capacity per unit: 2X9000, 1X12000, 1X24000 BTU  NEA Rating: 5 Ticks  Features a smart control system Includes a PM 2.5 filter for thorough air cleansing and high quality ventilation 19 dBA Sound Level Intelligent Eye Sensor for personalised cooling comfort and energy saving

 

Midea Air Conditioners

Midea offers versatile quality air conditioner units with outstanding energy efficiency. Their range from System 1 to System 4 provides efficient yet economical cooling solutions for your flat. Listed are some efficient units from Midea.

Midea System 4 Aircon MS50D-30-3X SEID-09-1X SEID-18

Midea offers 3D Airflow technology to ensure that your space receives adequate and even cooling. It has an innovative smartphone control for greater convenience.It is also given a 5-tick rating by NEA because of its energy efficiency. 

The package includes one (1) outdoor unit and four (4) indoor units, perfect for 4-room flats.

 

Notable Features Cooling capacity per unit: 3X9000, 1X18000 BTU NEA Rating: 5 Ticks  Presents a quiet operation  Panel LED Display Anti-mould Self Cleaning Backlit Remote Controller

 

Midea System 2 Aircon MS40D21-1XMSEID-09(S)-1XMSEID-12(S)

Featuring its innovative dual filtration system, this unit helps ensure clean and safe air for your family. It comes with one 9,000 BTU indoor unit and one 1,800 BTU indoor unit. It is easy to install and highly maintainable.

Notable Features Cooling capacity per unit: 3X9000, 1X18000 BTU NEA Rating: 5 Ticks  Presents a quiet operation feature Panel LED Display Anti-mould Self Cleaning Includes Backlit Remote Controller

 

Panasonic Air Conditioners

If you are looking for innovative and easy-to-maintain air conditioner units, Panasonic is the best for you. The brand takes pride in producing highly functional products while keeping them aesthetically pleasing. Check out these amazing units from Panasonic.

Panasonic System 4 Aircon CU4XS30UBZ-4XCSMX9UKZ

This 9,000 BTU, air conditioner unit presents its strong cooling capacity, Econavi, and Nanoe-G technologies for efficient air purification while maintaining a cool and cosy space. This 5-tick rated unit is guaranteed to be energy efficient.

 

Notable Features Cooling capacity per unit: 4X9000 BTU NEA Rating: 5 Ticks  Aerowings and Econavi Technology Nanoe-G for better air quality

 

Panasonic System 4 Aircon CU4S27VKZ-3XCSS9TKZW-1XCSS18TKZW

Panasonic's Aerowings system spreads more concentrated airflow faster across your space. It has two independent motors for the bigger outer flap and the smaller subflap to deliver concentrated cool air to more areas in your room. Its Econavi technology uses human activity and sunlight sensors to personalise its cooling intensity. 

Check out more innovative Panasonic Air Conditioners at Megafurniture.

Notable Features Cooling capacity per unit: 3X12000, 1X18000 BTU NEA Rating: 2 Ticks  Featuring Aerowings and Econavi Technology Nanoe-G filter system for a safer and more refreshing air quality

 

Mitsubishi Air Conditioners

Mitsubishi Electronics is one of the most trusted appliance brands here in Singapore, and for very good reason. The brand has upheld its quality over the years, and they keep on giving us quality appliances. They manufacture remarkable air conditioning units that are efficient, stylish, and durable. Choose your best unit from Mitsubishi.

Mitsubishi System 3 Aircon MXY3G28VA2-3XMSXYFN10VE

A 5-tick rated unit, the Mitsubishi System 3 air conditioner presents its optimum energy efficiency while providing safer air quality with its anti-allergy enzyme filter. It comes with one (1) outdoor unit and three (3) indoor units, making it ideal for 3-room flats.

 

Notable Features Cooling capacity per unit: 3X12000, 1X18000 BTU NEA Rating: 5 Ticks Easy to clean feature Quietest 19db Anti-Allergy Enzyme Filter Excellent Energy Savings

 

Mitsubishi System 4 Aircon MXY4G33VA2-3XMSXYFN10VE-1XMSXYFN24VE

This unit is ideal if you want to sleep in a cosy and peaceful environment. It provides optimum efficiency and an easy to clean system while keeping your room conducive for sleeping with its 19 dB sound feature. It also presents an anti-allergy enzyme filter to keep the airflow fresh and clean.

Notable Features Cooling capacity per unit: 3X9000, 1X24000 BTU  NEA Rating: 5 Ticks Easy to clean feature Quietest 19db Anti-Allergy Enzyme Filter Excellent Energy Savings

 

Portable Air Conditioners to Buy in Singapore

Here are more affordable and highly functional EuropAce portable air conditioner varieties to cool your home. You can choose from units that can only cool a single room to heavy-duty models. 

EuropAce 3-in-1 Portable Aircon EPAC 12W3 

This compact mobile unit operates at 1,200 BTU. Aside from cooling your space, it also features a self-evaporating system and a dehumidifying function, creating a cool and comfortable feel. If you opt to save more energy for your apartment, this unit is rated A when it comes to energy efficiency.

Notable Features Cooling Capacity: 12000 BTU Energy Efficiency Rating: Class A CFC Free Refrigerant Auto left/right oscillation louver, Adjustable Upward/Downward Louver 3-in1 Air Cooling and Purification Function

 

EuropAce 4-In-1 Portable Aircon with Remote Control EPAC 12Y6

Experience this compact unit's 4 in 1 functions: auto-evaporating technology, power cooling function, four-direction swing system, and LED touch panel. This portable unit presents a 24-hour timer function and a Class A energy efficiency rating for additional energy efficiency. 

Aside from its dual-motor cooling capacity, this compact piece also offers a PM 2.5 filter and 3-stage air purification. 

Notable Features Cooling Capacity: 14000 BTU Energy Efficiency Rating: Class A HEPA Filter: Able to Filtrate Airborne Particles 3-type Air Purification Functions Dual Motor for Rapid Cooling & Better Performance 24 Hours Timer

 

EuropAce Portable Air Conditioner EPAC 20S

Enjoy optimum power cooling with the EuropAce Portable Air Conditioner EPAC 20S’ 20, 000 BTU capacity and powerful rotary compressor. This heavy duty unit can cool up to 400 square feet. It also provides an efficient moisture removal system to effectively reduce humidity while providing cleaner and fresher air to your space.

 

Notable Features Cooling Capacity: 20,000 BTU 3-in-1 Efficient Cooling Function: Aircon/Fan/Dehumidifier Presents a Powerful Cooling Capacity Comes with a Powerful Rotary Compressor Water Auto Evaporation System Large Air Outlet Large Screen Display R410ACFC Free Refrigerant Auto left/right oscillation louver Adjustable Upward/Downward Louver 3 Fan Speed Selection

 

Installation Tips and Offers

Your air conditioner's efficiency depends not only on the quality and brand of the unit itself. There are also other factors that you should be carefully working on, like installation. 

Look for an authorised air conditioner installer

It is highly important to look for BCA accredited contractors to install the AC unit in your flat. This is to ensure that your home's electrical load can accommodate your air conditioner. Flats built or that have undergone the Main Upgrading Programme or Home Improvement Programme (HIP) can accommodate higher capacity electrical equipment like air conditioners.

Here are some things to note before, during, and after the installation process:

1. To test the new wiring in your flat, you have to submit an SP Services Ltd (SPSL) Form CS/5H form endorsed by HDB to SPSL. You do not need to secure this form if you have a newer block since HDB blocks completed on or after January 1994 are provided with a 40-amp main switch that can accommodate higher electrical loading. If your flat has only 30-amp, you need to follow the process above. Note that the maximum allowed weight for a condenser is 80 g, while the maximum for wall panels is 110 kg whether for an air conditioner ledge or external wall.

2. An installation report must be secured and sent to your HDB managing branch within 14 days after installation. Failure to comply will result in penalties.

3. The air conditioner unit must be installed in approved areas only. Any part of the unit is not allowed to be installed along common corridors. If you wish to install an air conditioner in your living room with existing pipes passing through, you must connect with a licenced technician to inspect your place before the process of installation.

4. Your installer must verify and ensure that the total running current of your air conditioners does not exceed the designated electrical rating.

5. Your air conditioner installer must insulate pipe joints to prevent liquid from dripping.

6. For flats with no air conditioner ledge, an air conditioner bracket must be installed. Make sure to get a sturdy bracket for your air conditioner to prevent your air conditioner from falling. Take note, if your air conditioner fails due to faulty materials, negligence, or a lack of proper maintenance, you will be subjected to penalties.

Why is it essential to get accredited professional service providers to install your air conditioner?

Flat owners who fail to install and maintain their air conditioners properly may face penalties under the Building Control Act.Building and Construction Authority (BCA)-accredited installers are trained to ensure that all regulations and safety standards regarding air conditioner installation are followed.

If unauthorised or unlicensed individuals install your air conditioner, all of the manufacturer's warranties will be void.Thus, all maintenance issues and warranty claims are revoked.

Do no do it yourself

DIYs may sound appealing if you want to save money on installation, but they come with risks and may result in additional damage, resulting in higher repair bills.

Megafurniture works with BCA certified technicians to ensure a secure and convenient installation process for our customers. We offer premium installation packages with high-quality and PSB certified materials. Our customer representative will contact you to arrange the installation schedule upon purchasing an air conditioner unit for your home. Our team ensures that we follow the highest safety standards.

How to Maximise Your Air Conditioner's Efficiency

The efficiency of your air conditioner does not 100% depend on its brand, specs, and BTU. There are also factors that you should consider fixing in your home to maximise your air conditioner's function.

Check your doors and windows

Your air conditioner's BTU is limited to a specific area only. Opening your doors or windows extends the space that a unit is supposed to cool, making it less efficient. Remember, your neighbourhood will not pay for your electricity bills.

Look for existing holes or leaks in your home

Just as you want to close your door and window while using an air conditioner, you would also like to seal the existing holes or leaks to prevent your air conditioner from operating longer than it has to. This will significantly help you save money and experience your air conditioner's total capacity.

Make sure that your condenser receives maximum airflow

It is important that your condenser gets ample shade for it to cool down, but too many obstructions like plants will hinder its efficiency. To maintain a healthy and efficient system, plants and other obstructions shall be at least 2 feet away from the condenser.

Be ready for regular filter changing and system maintenance

A unit's efficiency will not last long if it is left unattended after a long time of use. Spring clean your air conditioner once in a while, especially the filters, to maintain clean and safe air quality.

Do not place furniture or appliances against or in front of your air conditioner unit

As much as possible, you want to keep your air conditioner area free from clogs and obstructions so the air can move freely around your space freely. 

Adjust your thermostat based on your usual needs

Adjusting your thermostat by a few degrees will help your air conditioner unit work better and save more energy. New air conditioner varieties make this process easier due to their programmable thermostat.  

As much as possible, avoid using ovens or other heavy heating appliances during the hottest time of the day

The heat that you experience during the hottest time of the day, combined with your electrical appliances, will force your air conditioner to work harder than it should be. This will cause an inconvenience for both you and your air conditioner unit.

Consider your location

Your outdoor unit shall receive adequate shade

When an outdoor unit is exposed to direct sunlight, the compressor works extra hard to give you the right temperature. As mentioned earlier in this article, when the compressor works harder than it should, it also consumes extra electricity. Overheating also produces other problems that will affect your air conditioner's performance and longevity. Even a minimal amount of shade will work to reduce the risk of overheating your air conditioner's outdoor unit.

Your indoor unit shall be near or directed to a spot where you usually stay

If you plan to install an air conditioning unit in your bedroom, make sure that the airflow is directed to your bed to experience its maximum efficiency. If you intend to install a unit in your living room, it should be placed near your sofa or seat. Although air conditioners cool the entire room in general, units with smart sensors favour closer contact. 

The indoor unit shall be installed high enough to cool your room faster

The concept of warm air going up and cold air going down can be used for air conditioners. Cold air has a higher density. That is why it tends to stay in the lower part of the space. If you place your air conditioner against a lower wall or window, the cool air will not reach you at a more comfortable level. We highly recommend placing your unit at the right height.

The ideal height to install your unit is 5 to 6 feet above the floor. Make sure to install it in a place where no obstruction will affect its efficiency. However, even if you put your air conditioner in a higher place, you should still consider its accessibility when you need to clean it or replace its filter.

Do not install your air conditioner unit near or above other appliances

Heat from electrical appliances or light bulbs prevents the air conditioner from performing at its best. If the AC unit is exposed to too much heat, the thermostat may not read the proper temperature of the room, making its compressor work harder than it shouldrmostat may not read the proper temperature of the room, making its compressor work harder than it should. Furthermore, installing an air conditioner on top of an appliance, such as a television or refrigerator, increases the risk of liquid leakage damage.

Set a specific time to use and not use your air conditioner

If you have to leave your home during the day to work, you can set your 

 

Buy air conditioners online

You do not have to visit every appliance centre to grab the best air conditioner for you. Online stores in Singapore provide all the necessary information, like BTU, Tick rating, filter properties, size, cooling capacity, and other important features. You can also arrange the installation from the comfort of your home when you shop online.

Now that you know what to consider when buying an air conditioner for your flat, it is time to apply what you have learned to your next big purchase. 

 

FAQ

What is btu for aircon?

BTU, or British Thermal Unit, measures the amount of heat an air conditioner can remove from a room. It's a key indicator of an air conditioner's cooling capacity.

How many horsepower aircon is needed for a room? 

Generally, for a standard room, an air conditioner with about 0.5 to 1 HP is sufficient. For precise sizing, it's recommended to consult with HVAC professionals who can account for all variables and recommend an appropriate unit.