Live in the back country. Worked off of tank pressure from about 40' until our tank water heater went out & couldn't find one that would work on 5 gallon propane cans. So, got a small "camping" tankless that WOULD work with 5 Gal propane cans. However, the pump that came with the water heater just BARELY pushed enough pressure & flow thru to keep the heater working. Finally, it gave out so, after some research we got this one. WOW! What a difference! No more showers where the hot water just quitSee full review