We have bought 2 of these just this winter! The first one died and started tripping our GFI to the point where we couldnt use it anymore and it was not working at all. Now the second one is starting to do the same thing! DO NOT BUY they are crap and expensive!
This has been a great product for me. My rabbit are in a barn. Our barn is not heated in any means. I have not had a single one of my waterers freeze on me. We live in NW Illinois and it gets pretty cold here. The only gripe I have is the cord is way too short.
While the plastic quality is better than the old style water bottle, the heating section is inefficient. The water freezes about 1/2 an inch above the black bottom. It does not get warm enough to prevent the bottle from freezing. My poor bunnies can't get enough water.