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The Navien NHB-80H, installed by 4Most Energy, delivers 80,000 BTU/h of efficient heating for homes up to 2,500 sq ft. Perfect for radiant, baseboard, or air-handler systems, it can also connect to an indirect tank up to 40 gallons for reliable domestic hot-water production.
Installed by 4Most Energy — 80,000 BTU Heating • High-Efficiency Condensing Design
The Navien NHB-80H is a compact, high-efficiency heat-only condensing boiler designed for reliable, quiet performance in small to medium-sized homes. Professionally installed and serviced by 4Most Energy, it provides efficient hydronic heating through radiant, baseboard, or air-handler systems — all with an ENERGY STAR®-certified 95 % AFUE efficiency rating.
Built with stainless-steel heat exchangers and smart modulation technology, the NHB-80H optimizes comfort, reduces gas consumption, and fits perfectly into modern mechanical spaces.
95 % AFUE condensing efficiency for lower operating costs
Stainless-steel primary & secondary heat exchangers for durability
Quiet, modulating burner adjusts to real-time heating demand
Compact, wall-hung design ideal for small mechanical rooms
Wi-Fi ready (NaviLink™) for remote monitoring and control
Compatible with natural gas or propane
Ideal for homes up to ~2,500 sq ft
Supports radiant in-floor, baseboard/radiator, and air-handler systems
Excellent for retrofits or as a dedicated heating boiler alongside a separate water heater
