Thor Tuscany Motorhome's Aqua-hot,do you want that in an RV?

yes he will love it. Endless hot water (except if you fill up your grey holding tank!) great hydronic heating. It works when you're dry camping off batteries, when you're hooked up to power or using the generator. Diesel and/or electric. Our unit is a 2004 and since we are full timers and use the system a lot, we do annual maintenance. Less than $200 for someone else to do the service. http://www.rvtechmag.com/tech/38_aquahotsvc.php