Introducing

BTU Calculator

No more underpowered radiators or oversized units wasting energy. Backed by years of trade experience, we’ve built this tool to make your decision simple, accurate, and stress-free

BTU Heating Calculator

Calculate the required BTU output for your heating system based on room dimensions and characteristics. When considering new radiators, it is necessary to calculate the heat requirements of your space and our handy calculator allows you to do this very quickly. This is really important to ensure you get the most out of your radiators, without overspending on heating bills.

Room Dimensions

metres
metres
metres

Room Characteristics

Recommended BTU Output

0 BTU/hr

This calculation is based on your room dimensions and characteristics.

Calculation Factors

  • Base calculation: 90 BTU per cubic metres
  • Insulation quality adjustment applied
  • Window heat loss factor included
  • Climate zone multiplier applied
  • 10% safety margin added for optimal comfort
!
For larger rooms, consider splitting your heat output into multiple radiators to avoid cold spots in a room.

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