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Which size radiator do I need for my room?

A key factor in ensuring optimum heat efficiency for your property is to ensure the suitable radiator is chosen for each room.

Factors that can affect this decision include orientation of the room, energy sap, the number of windows and the delta of the room. The below outlines which electric radiator we would recommend for certain room sizes according to the property age and type:

Cali Sense wifi electric Radiators Intelli Heat
Cali Eco Sense Eco Design Lot 20 Compliant smart electric Radiators

Newer Homes built after 1976: (Properties with good insulation levels and cavity walls)

Lounge (average required temperature of 21 degrees)

(LxWxH)

10 feet x 10 feet x 8 feet = 22.5 cubic metres = 800 Watts of Heating (1KW Radiator required)

15 feet x 15 feet x 8 feet = 52 Cubic metres = 1820 Watts of Heating (2KW Radiator required)

20 feet x 20 feet x 8 feet = 90 Cubic metres = 3150 Watts of Heating (1 x 2KW + 1 x 1.5KW or 2 x 2KW Radiators required)

Hallways (average required temperature of 18 degrees)

(LxWxH)

10 feet x 5 feet x 8 feet = 13.5 cubic metres = 500 Watts of Heating (750w Radiator required)

15 feet x 5 feet x 8 feet = 33.56 cubic metres = 1174 Watts of Heating (1.5KW Radiator required)

Bedrooms and Kitchens (average required temperature of 18 degrees)

(LxWxH)

10 feet x 10 feet x 8 feet = 22.5 cubic metres = 800 Watts of Heating (1KW Radiator required)

12 feet x 12 feet x 8 feet = = 32 cubic metres = 1100 Watts of Heating (1.5KW Radiator required)

18 feet x 18 feet x 8 feet = = 72.6 cubic metres = 2540 Watts of Heating (2KW + 1KW Radiator required)

Older Homes built before 1976: (Properties with poorer insulation levels and single glazing windows)

Lounge (average required temperature of 21 degrees)

(LxWxH)

10 feet x 10 feet x 8 feet = 22.5 cubic metres = 1012 Watts of Heating (1KW Radiator required)

15 feet x 15 feet x 8 feet = 52 Cubic metres = 2340 Watts of Heating (2KW and 1KW Radiator required)

20 feet x 20 feet x 8 feet = 90 Cubic metres = 4050 Watts of Heating (2 x 2KW + 1 x 1KW Radiators required)

Hallways (average required temperature of 18 degrees)

(LxWxH)

10 feet x 5 feet x 8 feet = 13.5 cubic metres = 607 Watts of Heating (750w Radiator required)

15 feet x 5 feet x 8 feet = 33.56 cubic metres = 1510 Watts of Heating (2KW Radiator required)

Bedrooms and Kitchens (average required temperature of 18 degrees)

(LxWxH)

10 feet x 10 feet x 8 feet = 22.5 cubic metres = 1012.5 Watts of Heating (1.5KW Radiator required)

12 feet x 12 feet x 8 feet = 32 cubic metres = 1440 Watts of Heating (1.5KW Radiator required)

18 feet x 18 feet x 8 feet = = 72.6 cubic metres = 3267 Watts of Heating (2KW + 1.5KW Radiator required)

Eco Design Lot 20 Compliant
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