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Air Conditioner Sizes in BTU

Deciding how powerful of an air conditioner you should buy can seem like speaking foreign language, yet BTUs don’t have to be confusing.
BTUs are simply British Thermal Units, a standard of measuring heat energy, in this case the ability of an air conditioner to move hot air out of your space.

To calculate how many BTUs your air conditioner should have, please see the table below.
You may als want to read the information for information on the factors that influence the optimal BTU number.

Coverage Area* Required BTU’s Recommended Portable Air Conditioner Recommended Window Air Conditioner
100 – 150 5,000 – 6,000 Frigidaire FRA053PU1
Frigidaire FRA053PU1
Frigidaire FRA064VU1 Low Profile Window Air Conditioner
Frigidaire FRA064VU1
150 – 250 6,000 – 8,000 SoleusAir KY-80
SoleusAir KY-80
Frigidaire FRA064VU1 Low Profile Window Air Conditioner
LG LW8012ER
250 – 350 8,000 – 10,000 Friedrich P09B portable air conditioner
Friedrich P09B
Frigidaire FRA106CV1 window air conditioner
Frigidaire FRA106CV1
350 – 450 10,000 – 12,000 NewAir AC12000E Portable Air Conditioner
NewAir AC12000e
Sunpentown WA-1211S Window Air Conditioner
Sunpentown WA 1211S
450 – 600 12,000 – 15,000 Koldfront PAC1401W
Koldfront PAC1401W
Friedrich CP15G10 window air conditioner
Friedrich CP15G10
600 – 800 15,000 – 20,000 Frigidaire FRA18EMU2 window air conditioner
Frigidaire FRA18EMU2

* To come up with the square footage of the area that you want to cool down, multiply the length of your space by the width. If you have a triangular area, multiply length times width and divide by two for your final number.