We'd like to put in a tankless water heater, for a number of reasons: it's environmentally sound, it will lower our electricity bill, and I'd like to be able to run a nice, hot full bath.
The problem is, we don't know anything about tankless water heaters: what to look for, what brands are good, or whether they're a bad idea. So I'm throwing the question out to my ever-helpful readers. Is this a good idea? And if so, how does one go about finding a good heater?