Navien 240S

Navien 240S. The navien system heat exchanger technology combined with simpler venting. I am planning on replacing our 40 gallon hot water tank with.

Navien NPE240S Premium Condensing Tankless Gas Water Heater Tankless Water Heaters Heating from orthodoxie.com

The navien system heat exchanger technology combined with simpler venting. I am planning on replacing our 40 gallon hot water tank with.