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Home Davies Discount Radiators
BTU Calculator
This calculation is intended as a rough guide only. Complete accuracy cannot be guaranteed due to the many other factors that affect this calculation including the house location, outdoor temperature, the quality of insulation installed, and the heat output of electrical equipment in the room etc.

Use this calculator as a guide only, for more accurate results please consult your installer/tradesman to obtain exact figure relevant to the location you wish to install the new radiators in.

DDR (Scotland) Ltd accept no liability for the accuracy of results nor purchases based on the calculators figures. Contact Us if you wish further help.

Radiator - BTU Search
Radiator Location:
Living Room
Dining Room

House Position:
Mid Terrace
End Terrace
Glazing type:
Single Glazed
Double Glazed
Length (Metres) Width (Metres) Height (Metres)
BTU/hr to
Watts to

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