What Size kw oil filled radiator do I need Please

pinkparrott

Hi can anyone help with this querie, I want to buy a small portable oil filled radiator to move between rooms. I want one iwth a thermostat but what size kw should i go for ?
one room is 12 feet by 14 feet by 9 ft high and the other is 12 feet by 16 feet by 7 ft high.

I just want to achieve about a 18-20 degree temperature but unsure how many kw i need .

Also could someone confirm how then i work out how much per hour it costs to run.

Many thanks I'm not very good at maths !!:rolleyes:

Cardew

Get the largest power one you can.

It doesn't matter how many kW you use as the thermostat will switch the heater on and off as the room reaches the required temperature and all will use the same amount of electricity and cost the same.

The only difference is the larger power(kW) heaters will be on for a shorter time.

e.g a 1kW heater with the heater on for 3 hours will use 3kWh.

A 2kW heater will produce the same heat but its heater will only be on for 90 minutes and use 3kWh.

The advantage of the bigger heater is the room will warm up quicker.

A kWh costs approx 10p, so a 2 kW heater on for 2 hours will cost 40p - but that is only for the time the heater is actually on - and not turned off by the thermostat.

pinkparrott

thanks I dont want to spend toomuch as its just a temporary measure whilst we get some building work done and the contral heating then replaced , thanks I see how big i can get one for a reasonable price.

inmypocketnottheirs

Working on the assumptions that you have solid floors or insulated wooden floors, and 2 outside walls on each room you would require the following to heat to 20 degrees celcius:

Room 1 requires 7000 BTU = 2.051 KW
Room 2 requires 7600 BTU = 2.268 KW

Hope this helps!