What people are saying about the Rinnai tankless heater is overwhelmingly positive, with reviews praising endless hot water, high efficiency, and long lifespan, making it one of top rated tankless brands. Rinnai Corporation, founded in 1920 in Nagoya, Japan, headquartered in Nagoya, Japan, with factory in Griffin, Georgia, USA, makes Rinnai tankless water heaters that average 4.5 to 4.7 stars on Home Depot, Lowe's, and contractor sites. Consumers praise Rinnai tankless for providing endless hot water on demand, never running out, high efficiency of 0.93 to 0.98 UEF that saves 30 to 40 percent on gas bills compared to tank, compact wall-mounted design that saves space, and long lifespan of 20 plus years versus 10 to 15 for tank, with 12-year heat exchanger warranty. Many users report reliable performance even in cold Canadian winters with good freeze protection. Negative comments mention higher upfront cost of $1000 to $3000 versus $500 to $1500 for tank, need for annual flushing to prevent scale, and requirement for professional installation and gas line upgrade. Plumbers rank Rinnai among most reliable tankless with few callbacks. So people say Rinnai tankless heater is excellent, reliable, efficient, endless hot water, long-lasting, worth higher upfront cost for long-term savings and space saving.
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