BTU Calculator Delta T30 (Δ T30)

This calculator is for Delta T30 (Δ T30) calculations for Heat Source Pump systems.

A British Thermal Unit (BTU) is a measure of heat output from a radiator. Depending on the size of your room, the number and type of windows and what the room is used for, you'll need more or less heat. If you have a higher BTU requirement, it might be better to use more than one radiator to deliver the heat you'll need to a room. The total BTU output of several smaller radiators may meet your needs.

If you are entering your room measurements using feet then enter the measurements with a comma. For example 12 feet 3 inches would be entered as 12,3. Exactly 12 feet would be simply 12.

This calculator will give an approximate value of the BTU requirement for your room. Consider other factors such as if the room has large windows or more than one outside walls.