If you're measuring your room in metres then measure to the nearest centimetre. Enter your measurments using decimal notation for example 425cm would be entered as 4.25m.
When it comes to measuring the height if you have a vaulted or sloping ceiling use an average.
For example a room measuring 4 x 3 x 2.5 metres simply enter the measurements then set the room type. Tick the relavent boxes for French windows, North facing walls or double glazing. Then click the submit button.
So if our room was a bedroom measuring 4 x 3 x 2.5 metres and has double galzing then this gives results of 3811 BTU and 1117 Watts.
Please call us on 01663 749027 for advice.