Fire-tube boiler from Navien (AHR Expo Preview)
Navien introduces a new fire-tube boiler line, the NFB, which is designed for residential and light commercial applications. Four models range from 175,000, 199,000, 299,000 and 399,000 Btu/h, each offering a new patented heat exchanger design, ease of installation and service, intuitive interface, advanced controls, and simplified integration with IoT, Navien notes. The 10:1 turndown ratio, 95% AFUE, flexibility of venting, and remote access via mobile applications are just few of many exciting features that will benefit both contractors and homeowners.
Navien. us.navien.com. Booth #5758