I install this unit at camp and use A 12 volt pump that pumps 2.5 gpm power the heater with A inverter or my generator of 2000 WATS, and have endless hot water. good deal with vent kit included .Been using it for 2 mo.
I have purchases 3 of these, 2 as gifts. I wanted an outdoor shower for after pool use and this was great. It can get a a bit too hot in a Texas summer (entering water temp already pretty high.), but I'm guessing if I work with it, I can adjust the temp I set up myself with no problems. WAAAAAAY better than the $350 Bosch that I bought years ago that had major pilot issues. The battery start up saves a ton on propane (no pilot constantly running.)
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