How many BTUs do I need to air condition my home?

If you are looking to purchase an air conditioner or heat pump for your home, the first thing you need to consider is the BTU capacity of your air conditioning system.

First of all, the BTU, or British Thermal Unit, is a unit of cooling energy used to measure the capacity of air conditioners and heat pumps. If you know the area to be cooled (see chart below), you will be able to better determine the BTU rating of your air conditioner.

In addition to the area to be cooled, your Tran Climatisation technician also takes into consideration the height of the ceilings, the orientation of the windows, the age of the windows and the quality of the insulation in your home.

We invite you to consult the table below to find out approximately how much power your air conditioner or heat pump should have:

Area to cool (square feet) Required cooling capacity (in BTU)
100 to 150 5000
150 to 250 6000
250 to 300 7000
300 to 350 8000
350 to 400 9000
400 to 450 10 000
450 to 500 11 000
500 to 550 12 000
550 to 700 14 000
700 to 1000 18 000
1000 to 1200 21 000
1200 to 1400 23 000
1400 to 1500 24 000
1500 to 2000 30 000
2000 to 2500 34 000

We would like to remind you that this table is only an estimate; it is important to take into account the factors that may influence the number of tons you will need.

The more BTUs you need, the more expensive your unit will be. There are several types of air conditioners and heat pumps on the market. The most well known are the wall-mounted air conditioning systems (wall-mounted heat pump, split-system heat pump) and the central air conditioning system (central heat pump.)

However, even if you know how much space you need to air condition, make sure that a qualified technician inspects your home so that he can accurately assess the size of the air conditioner you will need. An air conditioner that is too powerful, or too weak, can lead to several problems, including higher energy bills.

Any questions?

If you still have questions about air conditioning systems capacity, about our prices, about our services, or if you wish to request a quote, we invite you to contact us. Tran Climatisation’s specialized team travels throughout Montreal’s South Shore, Laval and the Greater Montreal area. It will be our pleasure to give you all the information you need.

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