Got one of these down the shed, works way better than the old halogen heater I had as it heats the air properly. You need decent ventilation, but thats hardly an issue for me.

I use one in my 4sq metre conservatory and it enables me to use the conservatory all year round.
I was also expecting to get some condensation but because the kitchen door leading into it is always open it's never a problem.
Another thing is these new modern heaters don't smell fumey like they used to and seem to burn very clean.

Good price, if I needed one this is what I would get. Good find Op Heat giving

Smelling fumey might be a useful sign to warn of danger... Not to be a killjoy but unless your ceiling is 5mtrs tall then you might want to read this
From Manufacturers website:
SAFETY INFORMATION.
This is a fumeless heater. Ensure the room is ventilated while the heater is in operation. Do not operate in a bedroom, caravan, boat, tent, awning or any room less than 80 cubic metres in volume.

How long would one gas bottle last please...let's say how many hours on a medium setting...
Trying to work out if this is worth getting as apposed to electric

These heaters have three heat settings and if used on maximum for a prolonged period of time I would agree on the 80 cubic metres volume.
I find in my conservatory on the maximum heat setting it is way too hot after a few minutes so it always gets used on minimum and I also have a carbon monoxide alarm in the room for extra safety.
Even on maximum the carbon monoxide alarm has never once gone off plus the heater also has an auto shut of if oxygen levels get too low which they never have.

Perfect. That you so much

Great price!

80 cubic metres! That's ridiculous, we don't all live in the Albert Hall.

This is 10 - how big would a room be for 80??

Waiting for somebody to come along that butane doesn't work very well in the cold...oh they just did. :stuck_out_tongue:

Should be OK to use this at room temperature but won't work very well if the bottle is cold.

This simply isn't a cost effective way of heating, unless you don't have mains electricity
If the 13kg bottle of butane is £20.99, then that equates to 178 kwh of energy (butane being around 13kw/h per kg) equivalent. Which makes it 11.79p per kwh, equivalent to the cost of electricity. This will not be 100% efficiency either unlike an electric heater, more like 85%, making it around 13.87p equivalent per kw/h
So just get a couple of convector heaters, which is much safer too. And you don't have the hassle of ordering and disposing of gas bottles.

I think as long as you use carbon monoxide detectors you should be OK. I lost a good friend a few years ago - he had a room in Greece whilst working there which had one of these heaters. He went to sleep and never woke up. That was in the 1980's and I know times have changed with more awareness, Monoxide detectors and Oxygen sensors etc. but it's always good to have a heads up. I've been told that you can no longer use these in care homes, foster homes or other business' where the public are found unless they have the required Cubic area (and if they did, I'm not sure how effective they would be at heating the room!!)

...and so what is the volume of each box? 0.1 cubic metres, 0.125 cubic metres or. 0.5 cubic metres?

I think you've replied to the wrong comment. 10 cubic metres is 2.15m on all three axes. 80 would be ​4.3m on all three axes.

Much smaller than you would expect actually. If you made each of those walls twice as long and the ceiling 2.5m then you have a 63m^2 room.

Couple that with an open door and a CO alarm and you would probably be fine (I am not a doctor and this is not medical advice. Batteries not included.)