I had a Bosch tank-less water heater prior to purchasing this Rinnai water heater. The Bosch lasted only 8 years and actually had problems from day one of the installation - overheating, turning off in the middle of a shower, leak from the copper burner tank, etc... This Rinnai water heater has been rock solid from day one, extremely efficient and has worked flawlessly for the past year supporting the demands of 5 users in my household. This unit supports at least two showers simultaneously and more. I would definitely without hesitation recommend this product to anyone with a large family that wants an efficient unit without sacrificing the hot water throughput.
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