it seems there is mixed reviews. A few questions. If mine runs off propane then why would I worry about my electric bill? I'm not at a campground so there are no facilities but I do have full hook up. It seems like if I use my shower every day it would be more effecient to leave it on and have it cycle on a few times a day for a few minutes to maintain heat than 20 minutes from cold every time. If I'm going to be gone more than a day I'll turn it off. But for now I'll try leaving it on and see how often it kicks on in a day.