How Many Square Feet Btu Air Conditioner. 1 square meter = 10.76 square feet 5. The chart below is a great starting point for sizing your ac.
Below is an approximate sizing guide: A 14000 btu wall air conditioner or window unit is trickier to install, but they won't waste any of your home's precious square footage. For example, the manual j calculation may say you need 25,000 btus for cooling. The most common window air conditioning units come in cooling capacities ranging from 5,000 to 12,000 btu. To size your mini split air conditioner, the most important thing you need to know is the square footage of the room you're looking to cool and/or heat.
Residential units generally top out around 14,000 btu, enough for 700 square feet at most.
Simply measure the length and width of a room and figure the square footage. A 12,000 btu air conditioner can cool between 450 and 550 square feet of floor space. Besides, how many square feet will a 25000 btu ac cool? As a general rule (and without accounting for other factors), you need 1 btu for every 10 square feet for cooling and 1 btu for every 20 square feet for heating. 10 times 12,000 is 120,000 btu. An rv measuring 500 square feet only needs about 11,000 to 12,000 btus in order to stay nice and cool.