Heating Load Calculator

Free heating load calculator for heating BTU calculator. Enter the values below to get an instant result.

JavaScript is required for live calculation.

You can still read how Heating Load Calculator works, the formula, examples, and FAQs below.

Space size
Climate
Insulation

Inputs

Space size

Climate

Insulation

Results update when you click Calculate.

Tons

83.33

(space_size) * (climate) / 12

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Recently used

Tools you open will show up here on this device — with your last inputs when available.

What this result means

Free heating load calculator for heating BTU calculator. Enter the values below to get an instant result. Estimate heating load: (space_size) * (climate) / 12.

Assumptions

Rule dependency: Rule/assumption dependent.

How it works

Estimate heating load: (space_size) * (climate) / 12.

Example

Example: “heating BTU calculator”. Enter your values and click the button to get a result.

Frequently asked questions

What does this heating load calculator do?+

It helps you estimate heating load. Typical search: “heating BTU calculator”.

How should I read the result?+

Estimate heating load using space size; climate; insulation. Result: heating capacity.