Used to heat a moderately well insulated self converted camper van. Two weeks skiing in Austria with temperatures outside at night down to -15 in the van the heater was never used above half power with the temperature up to +25. Now sitting in the van in north Italy it’s about zero outside heating is on the lowest setting and it’s +20 inside.Fairly simple to fit, anyone with reasonable DIY skills should not have any problems.Reasonably quiet with one silencer fitted.Jubilee clips supplied are poor quality but do work, probably best to replace.Using the fuel tank supplied as I didn’t have time to put an auxiliary fuel line in the main tank for the van, using about 10 litres every 3 days.Magnetic fuel pump is very annoying and I will look into replacing it with something that does not knock