Navien NFB-C commercial condensing fire tube boilers have all key components in-house designed and manufactured, and offer an industry leading 97.5% thermal efficiency, 15:1 turndown ratio, intuitive 7” color touch screen with advanced controls, BMS communications and 3” venting up to 60’ or 4” up to 150’ with PVC/CPVC/PP/SS approved materials.
Product Focus: Boilers
Navien condensing fire tube boilers
![Navien NFB-C commercial condensing fire tube boilers](http://www.pmmag.com/ext/resources/Issues/2022/05-May/PM-0522-ProdFocus-img3.jpg?1651672528)