Extra Data: 2'' venting up to 65'' and 3'' venting up to 150'', 95 Percent AFUE, Up to 15:1 TDR
Family: Nfb H
Description: Navien NFB-H series are condensing boilers featuring patented fire tube stainless steel heat exchanger, advanced burner system, smart controls with intuitive user interface, industry-leading AFUE of 95 Percent, built-in 3 zone pumps or 3 zone valves and tu
Extra Data: 2'' venting up to 65'' and 3'' venting up to 150'', 95 Percent AFUE, Up to 15:1 TDR
Family: Nfb H
Description: Navien NFB-H series are condensing boilers featuring patented fire tube stainless steel heat exchanger, advanced burner system, smart controls with intuitive user interface, industry-leading AFUE of 95 Percent, built-in 3 zone pumps or 3 zone valves and tu