Guide to Sizing Radiators
Bascis understandig of terms
Heating Calculations..
To Understand how to work out the right heat output radiator for your room - this is a basic understanding on how to convert Kw enery to room sizes: -
1Kw of energy heats: -
- 1Kw = 1 Imperial Building Sqrs (2400mm x 2400mm x 2400mm)
- 1Kw = 2.4 Metric Building Sqrs with 2.4Mtr Ceiling
The correct size radiator
Choosing the correct size radiator is important. This information provides you with a quick and easy method to estimate the best sized radiator for your home.
What to do:
- To estimate the size of the radiator required, you need to know how much heat is required to maintain a comfortable room temperature.
- Use the chart below to esitmate the heat required for each room.
Click on chart to down load PDF
The above chart is based on room assumptions of:
A). The room being insulated to the new building code
(If not, add 20% )
B). The room having 25% or less of its walls as windows.
(If more than 50% of its wall as windows, ).
C). The room ceiling height being 2.4 meters.
(If ceiling is higher add a percentage increase as below)
3 meters high add 25%
3.6 meters high add 50%
Example: Room size 5 metres wide by 4 metres longwith ceiling height 3 metres
From the chart: Heat output = 2.3kW + 25% for 3 metre ceiling = 2.88Kw
1.Windows are a significant loss factor, for every large window where the room has over 50% of its walls as windows space, please consult with Pivot Stove & Heating sales consultant
