Have a small bedroom that I am redecorating as a guest room since daughters have now moved out and want to replace the radiator. How do I work out what size to use as they are more efficient nowadays but don't udnerstand what BTU is and how you work it out...
2006-10-24 03:43:59 · 9 answers · asked by essdee 4 in Home & Garden ➔ Do It Yourself (DIY)
small bed, 2000 BTUs will do it.
My plumber friend has formulas that take into account the doors, windows, external walls, insulation etc. Then it ends up being governed by the amount of wall space you have !
If you have space, go with 2500 BTUs, you can easily turn it down.
btw, Wickes rad look much more modern than B&Q etc, they have rolled top edges rather than flanges. They are cheap as well.
The heat loss calculator ( below ) costs £15, not worth it for one rad.
2006-10-24 03:46:39 · answer #1 · answered by Michael H 7 · 0⤊ 0⤋
10000 Btu Radiators
2016-11-01 00:59:44 · answer #2 · answered by ? 4 · 0⤊ 0⤋
Length X width X height X 5 divided by btu's per foot.
2006-10-24 18:15:44 · answer #3 · answered by AnthonyG 1 · 0⤊ 0⤋
As a good general rule allow 50 Btu per square foot of floor area.
You can do detail calculations, but this is a reliable and easy basic method.
2006-10-24 12:35:07 · answer #4 · answered by Anonymous · 0⤊ 0⤋
You need 10,000 BTU for every 250 Sq ft. EX: 40,000 BTU for 1,000 sq ft. As other poster stated 2,500 BTU should be more than sufficient for a bed room.
2006-10-24 06:50:32 · answer #5 · answered by jkmewright 1 · 0⤊ 0⤋
I think you are trying to use the wrong device personally. Once a bathroom door is opened, any accumulated heat would be gone anyway and depending on the size of the room a towel WARMER wouldn't give you what you are asking for. If the electric is already there, a towel bar over a small strip of electric heat would work much better, but not look as slick as you want it to. Heat or appearance is what you have to ask yourself.
2016-03-18 23:29:40 · answer #6 · answered by Anonymous · 0⤊ 0⤋
There are applications available for you to work out outputs and rad sizes. You can download a Heatloss Calculator from the Heating Iand Hotwater Industry Council.
2006-10-24 03:49:36 · answer #7 · answered by k² 6 · 0⤊ 0⤋
You need to calculate the heat loss of the room, including walls, windows, floors and insulation, and then match the loss with a suitable output from a radiator.
This may help.
http://www.trademate.co.uk/Services/HeatLoss/default.asp?_brand=CP
2006-10-24 03:57:56 · answer #8 · answered by jayktee96 7 · 0⤊ 0⤋
British Thermal Units are old-fashioned these days. The SI unit is kW, and all calculations should be using kWs.
2006-10-24 04:00:28 · answer #9 · answered by Phish 5 · 0⤊ 2⤋