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  rooms 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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