Quote:
Originally Posted by retiredguy123
All this information about sizing an AC unit is interesting. But, basically the AC units come in half ton sizes from about 1 to 5 tons. A ton of cooling capacity is 12,000 BTUs per hour. As a rule of thumb, a ton of capacity will cool about 600 SF of living space. So, if you have a villa that is about 1200 SF, you most likely have a 2 ton cooling unit. If your house is about 1800 SF, you probably have a 3 ton unit. You can check the capacity by copying down the model number on your outside unit and google it. Compare the cooling capacity of your unit to the square footage of your house.
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Hmm. I just checked and ours is a 3.5 ton unit. Our A/C area is 2581 sq. ft., so 2581/600 = 4.3, so undersized technically. No cooling issues though.