Depends where you are. We had one in Puerto Rico (i.e. warm water coming into the house) and I loved it. Up north it's questionable. And note that when it's

Depends where you are. We had one in Puerto Rico (i.e. warm water coming into the house) and I loved it. Up north it's questionable. And note that when it's on, especially during the winter, it will suck down a lot of amperage - like, 60 amps. If you've only got 100 amp service, like I do, you probably want to go with a gas heater.