peranza.aioe.org:
I seriously doubt that a tankless water heater is going to be a good option. They cost considerably more. And the main savings is that they eliminate the standby losses that you have with a tank type, where hot water is sitting there all the time. And then you have the issue of a tankless gas or electric? Even to supply a mobile home, an electric one is going to have to pull a lot of amps. Maybe so much that the service can't support it without upgrading it. Same thing with a gas one. You need a supply line big enough to run it and that could require upgrading back to your tank. The one advantage you would have is your location, where the incoming water isn't real cold, so you could get away with a smaller BTU unit. If you start to look into tankless, those are the kinds of things you want to look at, not just the cost of the unit.