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 ...

There are a lot of people out there who believe tankless water heaters do not work well with cold groundwater temperatures. We hear this mostly in places where it gets below freezing like Minnesota, ...

Doctor Water Heater expands certified Navien tankless installation services to meet rising demand for high-efficiency hot water systems across New Jersey. "Homeowners want reliable, efficient systems ...

While a "cold water sandwich" might sound like something you'd order at a sketchy 24-hour diner, it's actually not a sandwich at all — it's an unwelcome surprise during your would-be hot shower.