British Thermal Unit (BTU) is one of the essential things you must consider when you are in the market for a new air conditioner (aircon). Choosing the correct aircon BTU for your room gives you proper comfort and save energy at the same time.
But, how to calculate the appropriate aircon BTU for your room? Discover what aircon BTU is and the rule of thumb in determining the right size here.
Aircon BTU is a measurement for aircon cooling capacity. It essentially tells you how powerful aircon cooling is. That is why the higher the aircon BTU, the higher its price is.
This begs the question: why should customers choose the right BTU?
It all boils down to efficiency and comfort.
According to National Environment Agency (NEA), bigger than needed BTU is not necessarily better. An aircon with oversized BTU for your indoor space is more expensive, costlier to operate, and cannot dehumidify the room properly. Also, the cooling will make your skin unpleasantly clammy.
On the contrary, inadequate aircon BTU cannot give the cooling and dehumidification you need. Inadequate cooling means longer cooling times. That leads to high electricity bills because you have to turn on your aircon longer than you want.
You already know how important BTU is when you want to buy a new aircon. And NEA has a say in how to choose the right aircon BTU for your room.
The general rule of thumb from NEA is:
For example, you want to buy an aircon to cool a 15m2 HDB bedroom. The ballpark BTU for that bedroom size is:
Based on the example, you need an aircon with 10,000 BTU to adequately cool a 15m2 HDB bedroom.
The math above is the general assessment to calculate the right aircon BTU. It can help you to determine the right cooling power for your room.
Image source: Samsung
The steps and math from NEA are helpful; however, other factors may require you or your aircon contractor to make adjustments before deciding the best BTU for your room.
The standard HDB ceiling height is 2.6 metres. You may need additional cooling power for rooms with 3 metres or higher ceiling heights. Please consult with your aircon contractor.
Is the aircon will be for a sunny room like windows are orientated toward the sun? Increase the total BTU by 10%.
Is the room heavily shaded? Homeowners can decrease the total BTU by 10%.
Aircon contractors mainly consider a room to be filled with two people regularly. If the room is frequently occupied by more than two persons, you need to add 600 BTU per person.
Are you going to put the aircon in the kitchen? That means there will be additional heat sources, like from a stove or fridge. Hence, you must make adjustments, and experts recommend adding 4000 BTU for aircon in the kitchen.
Calculating the general aircon BTU is pretty straightforward. You can even use many BTU calculators available online.
Once you know the right aircon BTU for your room, reach your go-to aircon installation contractor.
At Purer Fresher Air, the installation of aircon is handled by a team that has been in the business since 2001. We have installed aircon for over 10,000 households across Singapore and are more than happy to help calculate the right BTU for you before you purchase your new aircon.
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