PEACHTREE CITY, Ga. — Rinnai has introduced a tankless water heater that allows for concentric or twin-pipe PVC venting from the same unit. The new Ultra Series condensing tankless water heater models ...
Water heater manufacturer A. O. Smith (hotwater.com) is launching the Simplicity Series of concentric venting, noncondensing tankless water heaters — designed to make installations simple and flexible ...
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