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 ...
PEACHTREE, Ga.--(BUSINESS WIRE)--Rinnai America Corporation, the number one selling brand of tankless water heaters in North America, calls on the U.S. Department of Energy (DOE) to revise its ...
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