IRVINE, Calif. — Navien has started shipping the new NHW-A non-condensing tankless water heater. The NHW-A is available in two configurations: NHW-AI for interior installations and NHW-AE for exterior ...
The Cool Down on MSN
Homeowner's hot water frustration reveals common myth about tankless water heaters
The real culprit is often the plumbing run itself, not the water heater.
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