Navien tankless water heater

Navien introduces the NPE-S, Navien Premium Efficiency – Standard, which delivers up to 0.98 EF efficiencies. The NPE-S tankless gas water heater is ideal for both residential and commercial applications. All other NPE series features are found in the NPE-S, including: 1/2” gas pipe capability up to 24’; dual stainless-steel heat exchangers for longer life; field gas convertibility; and 2” PVC venting up to 60’.