10/10 live off grid in Ireland. December to end of February are our coldest months. And this little diesel heater is the bees knees. I have my heater running 24 hours a day since November to keep the damp out. On setting number 1 …… 5 litres lasts me 26 hours yes 26 hours in a mobile home which are very poorly insulated 5 litres I use agricultural diesel (green diesel) €1.20 a litre I’m buying another one today for my work shop to stop tools rusting and bikes and storage items from damp and mold 100 percent recommend to everyone