It looks like there are variations as far as quality for some of these tankless hot water heater burners.
Check out just a few of the units I found ranging from a cabin/camp heater from The Sportsman's Guide to a house unit to the Marine quality $1500 Precision Temp Shower-mate.
http://www.sportsmansgui...net/cb/cb.aspx?a=667361 http://www.excelonlinest...credit-vent-free/Detail http://precisiontemp.com/pt_rvmd_m500.html
I'm still deciding on where to put this burner/igniter. The propane source will be the twin tanks located in a propane box/locker which will be housed on a shelf which is to hang off the back of the stern-->see pics towards the end of my project photos via this link:
http://s1216.photobucket...dd377/projecthouseboat/ I'm going to try to sketch a picture on my idea on there.
I'm considering housing the tankless water heater burner unit on the OUTSIDE of the superstructure.
Anyone out there have any experience in using these tankless hot water heaters? I'm leaning towards the Bosch or Excel unit.
Thanks, Roger-->Mt. Dora, FL.