Which heater?
This will depend on the nature, use and design of the interior; and one type or a mixture of products may be used. In general, fan-forced heaters and convectors are employed as space heaters, and radiants where more localised heat or immediate all-over warmth is required.
Radiant heating
Twinzone, Sunzone, Ceramiczone and Quartzzone heaters are specified where there is a need for localised heat or immediate, all-over warmth. Applications include commercial and industrial premises that are lightly constructed, naturally cold and perhaps infrequently used. They are also ideal for premises where staff occupy only small parts of a large area, such as warehouses, stores and workshops. To estimate the approximate total heating load needed in kilowatts (kW), use the following formula;
Installed Load (kW) = (AxF) / 1000
where: A = floor area in square metres and F = appropriate heating factor from the following table;
Type of Building |
Heating Factor F
(Watts/sq.m) |
Sports Hall
Shops and Supermarkets
Offices and Canteens
Workshops and Garages
Halls with some activity
Warehouses
Halls with little activity
School Halls
Churches |
110-130
130-160
140-170
150-180
160-200
170-210
180-220
200-260
220-280 |