AC BTU Calculator

Use this calculator to estimate the cooling needs of a typical room or house.

Size

Room Ceiling Height

Number of People Inside Regularly

Type

Insulation Condition

Sun Exposure

Climate

General Purpose AC or Heating BTU Calculator

This calculator estimates BTUs required to heat or cool an area based on volume and temperature change.

Room/House Width

Room/House Length

Ceiling Height

Insulation Condition

Desired Temperature Increase or Decrease

e.g. 75°F for Boston winter, 45°F for Atlanta winter.