Navien NR-210A Condensing Tankless Water Heater with Pump and Buffer Tank, Natural GasProduct Review

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98 percent thermal efficiency. 0.94 energy factor

17000 - 199000 BTU/hr

Flow rates - At 35 Degree Fahrenheit Rise : 10 GPM, At 45 Degree Fahrenheit Rise : 7.7 GPM, At 77 Degree Fahrenheit Rise : 4.6 GPM

Easy installation and PVC venting

Includes NR-10DU remote control