18000 btu or 1.5 tons.
I am looking for a window AC unit to use in my whole house. What is the BTU's one would need to cool a whole house?
The smallest air conditioner you can find would be appropriate.You'll probably have to cut it on and off too.
48000 btu
1500 square feet
I am not an expert, but I have cooled a 12 x 18 room, 206 sq. ft. with a 9,000 BTU window unit, and it gets hot in Texas. Take it from there.
37000 btu
24,000 btu
It could be due to cold temperatures, yes.
Window AC units CANNOT be recharged at any reasonable expense. They normally hold about 8-14 onces.
You need between 20 and 22 btu per square foot in an average home. So, 121 x 20 = 2420 or ~2500. 121 x 22 = 2662 or ~2700. So 2500 to 2700 btu.
There are 746 watts to the horsepower and that is 12,000 BTU so you will need a converter that will handle 622 watts plus 1.25% so approx a 780 watt converter