I'm quite happy with this heater, except for 3 months out of the year. I live in Florida Tampa Area and figured this a warm climate, but if the temperature goes below 40 degrees the heater won't work, I have it in a carport shed, so no insulation. If I put a space heater in my shed and let it run for about an hour I'll get some hot water after leaving the faucet running for 5 min. The whole thing is very annoying to say the least.So overall I do not recommend this heater except if you live somewhere where it never gets below 50 degrees.