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Not sure which size radiators you need?
Recommended performance table
(Watts per square metre)
For rooms with ceilings heights up to 3 metres
For rooms with ceiling heights from 3 metres to 3.5 metres
For rooms with ceiling height of 4 metres and above
contact Haverland UK for calculation details.
Measure the room. You will need to know the length and width
of the room as well as the height of the ceiling in metres.
Example: 5 metres x 3 metres = 15 square metres
Total sq m = 15 sq m x 100 watts = 1500 watts
Recommendation: 1 x RC12 TT = 1500 watts
Example: 6 metres x 5 metres = 30 square metres
Ceiling height: 3.5 metres ÷ 3 = 1.16
Multiply 30 sq m x 1.16 = 34.80 cubic metres
Total cubic metres = 3.4.80 sq m x 100 watts = 3,480 watts
Recommendation: 2 x RC12 Compact TTi @ 1800 watts each = 3600 watts
These calculations should be considered as average depending on location, orientation and insulation.
MAKING HEATING CALCULATIONS
Up to 3m height
3m to 3.5m height
Model
Watts
Max sq.m room
RC 4 TT
500
5
RC 6 TT
750
7.5
RC 8 TT
1000 10
RC 10 TT
1250 12.5
RC 12 TT
1500 15
RC 8 Compact TTi
1000 10
RC 10 Compact TTi
1500 15
RC 12 Compact TTi
1800 18
Model
Watts
Max sq.m room
RC 4 TT
500
4.31
RC 6 TT
750
6.47
RC 8 TT
1000 8.62
RC 10 TT
1250 10.78
RC 12 TT
1500 12.93
RC 8 Compact TTi
1000 8.62
RC 10 Compact TTi
1500 12.93
RC 12 Compact TTi
1800 17.24
Zone A
Zone B
Zone C
Zone D
Facade
orientation
CLIMATE ZONE
Not insulated
North South
100 95 90 80
105 100 95 85
110 105 100 90
115 110 105 95
Normal insulation
North South