Calculators

Air Conditioning

You probably know that an air conditioner that's too small for a room won't cool it. But bigger doesn't always mean better. A unit that's too large for a room will cycle on and off too fast, so it won't dehumidify the space.

Room Size

Enter the dimensions of the area to be cooled, rounding up to the nearest foot.

Length in feet: Width in feet: Height in feet:

Exposure

Which way does the longest outside wall face? North South East West

Kitchen

Does the area to be cooled include a kitchen? No kitchen Occasionally used kitchen Frequently used kitchen

Insulation

Is the exterior wall of the room insulated, or is it a masonry (brick or stone) wall more than 8 inches thick? No Yes

Other Factors

Are any of the following things true about the area to be cooled?

• It receives direct sunlight
• It's on the top floor
• It needs to be cooled during the day as well as at night

Yes, at least one of these is true No, none of these are true