I have an 12KW Singer heater. Small unit about 14" cube hung from the ceiling. Warms my 1 car and workshop up toot sweet now. It was only getting to about 60 before shutting off. That normally wouldn't be a problem but need to get it warmer so I can shoot some paint. I thought I was going to need another thermostat but really didn't want to go looking because this is probably 25-30 years old. Fiddling with it today I found the thermostat could easily be adjusted. One more step towards getting ready for paint.