Join Date: Apr 2013
Location: Southern Indiana
No, they're electric. I run 2 large ones, I believe they're 1500 watts for the 100 gallon tanks (horses are kept in 2 different herds), and then a small bucket deicer for the cats water and it will jump the electric bill up by about $70.00 in a month where they have to remain plugged in the whole time.
They're supposed to be thermostat controlled and come on at 40 degrees, shut off at 50 but I don't think they do what they say in that area so they get unplugged anytime the temps are above freezing.