Bests & Worsts Reviews from Amazon

The unit is very quiet and we have unlimited hot water. I ran a bath tub, multiple showers and a couple of faucets at the same time as a test and the water stayed at a constant temperature. We switched from electric to gas and our power bill went down significantly but we only pay a little bit more for gas per month. The unit will pay for itself in a couple of years. This unit can be configured with a recirculation system for instant hot water. At first I added a small pump but it was too small so the unit would not fire consistently. I replaced the small pump with the Rinnai GTK15 kit which comes with a large pump and a timer and now it turns on every time. Since the pump doesn't run continuously, the water temperature does fluctuate a bit at first; it would be nice if the unit had a small holding tank to compensate for this. Maybe the RUR98iN which includes the circulator works better for this application (but it's significantly more expensive) Update July 2017 We've had the unit for 2 years and I updated my review from 4 to 5 stars. It has been working flawlessly and the water temperature is constant no matter if we use a lot or a little of water. Update April 2018 Still working as well as the day it was installed. Zero headaches :-)