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 ...
IRVINE, Calif. — Navien, a condensing technology manufacturer, took the first step into the noncondensing market by introducing its Navien Premium Non-condensing (NPN) Series tankless water heaters ...
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