HyperFires kW Calculator

Calculate the minimum required kW output for your fireplace based on the size of the room.

All fireplaces heat volumetrically – please note that this is a guide only and adjacent ┬árooms that are open plan and cannot be blocked of must also be taken into consideration for your caluclation.

Add room dimensions below to calculate required kW output

Complete all fields below to calculate the result



Width of area to be heated in meters



Depth of area to be heated in meters



Height of area to be heated in meters


Well InsulatedPoorly Insulated

Well Insulated: Double glazed windows, properly insulated walls & ceilings


Poorly Insulated: Single pane glass, no insulation in walls & ceiling


kW Output Required:

note: 5 kW is the lowest output available in our range of fireplaces

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