As the leader in condensing technology, Navien has already reinvented the water heating industry with the award-winning NPE tankless water heaters and the NCB combi-boilers. The new NHB boiler series is the next in line of innovations from Navien. All NHB boilers have Navien’s advanced burner system, an industry-leading AFUE of 95% and turn down ratios up to 15:1.

Features

• Super condensing efficiency
• Dual stainless steel heat exchangers
• SCH40, 2" PVC venting up to 60'
• ½" Gas pipe up to 40'
• TDR up to 11:1
• Integrated controls