HVAC BTU estimator

Estimate a rough cooling-capacity starting point from room area and an adjustable factor.

Loading the interactive tool…

JavaScript is required to use this tool. This rough screening estimate multiplies area by a user-adjustable factor and adds an entered load. It does not account for climate, insulation, glazing, occupancy or equipment; obtain a qualified HVAC load calculation before sizing.

How it works

This rough screening estimate multiplies area by a user-adjustable factor and adds an entered load. It does not account for climate, insulation, glazing, occupancy or equipment; obtain a qualified HVAC load calculation before sizing.

Example

25 m² × 600 BTU/h per m² gives a rough 15,000 BTU/h before additional loads.