Thermosoft heatload calculation guide

By using the house plan as a guide you may wish to work out your own heating requirements in Watts. You can then use this wattage figure to match with a suitable Thermosoft radiator from the table, taking the physical size into consideration to fit available wall space in your room. You might need to use more than one radiator in larger rooms. It's best to work in cubic meters, as heating is applicable to room volume rather than to floor area. On the plan you will find the wattage/cubic meter for each type of room. A room with only one external wall requires less wattage than say a room with three external walls. The figures also relate to normal insulated homes – i.e. at least R2.5 in the ceilings and R1.7 in the walls. For large windows you should add five Watts per cubic meter. For extra large windows you should add another five Watts per cubic meter. If you have double-glazing the above figures could be reduced. Please refer to Southern Cross Companies Pty Ltd. If you however prefer, Southern Cross Companies Pty. Ltd. or their representatives, will be more than happy to work out your heating requirements. We will need your house plans including the elevation and room sizes including heights.

Explanation: W / m³ Means Watts per Cubic Meter

Please also note that the above figures relate to radiant heating only as other type of heaters, including open ended wall mounted convention heaters, could require considerably higher wattage.