Upgrade to a high-efficiency Elite Series furnace:Â Get 6 Months Free on Go Flex or $500 off when buying outright. Warm home, lower bills, zero stress.
The Navien NHB-110H, installed by 4Most Energy, delivers 110,000 BTU/H of high-efficiency heating for homes up to 3,000 sq ft. Ideal for multi-zone radiant, baseboard, or air-handler systems, it can also pair with an indirect tank up to 60 gallons for efficient domestic hot-water production.
The Navien NHB-150H, installed by 4Most Energy, delivers 150,000 BTU/h of powerful, high-efficiency heating for large homes or buildings up to 4,000 sq ft. Ideal for multi-zone radiant, baseboard, or air-handler systems, it also supports an indirect tank up to 70 gallons for domestic hot water.
The Navien NFB-175H, installed by 4Most Energy, delivers 175,000 BTU/h of heavy-duty heating for large homes, buildings, and commercial spaces. Handels glycol systems, snow melting, and radiant heating support multiple indirect tanks and hydraulic separation for powerful, efficient performance.
The Navien NFB-200H, installed by 4Most Energy, delivers 199,000 BTU/h of powerful heating for large homes, commercial buildings, and multi-unit properties. Ideal for snow-melt, radiant, and glycol systems, it can be cascaded with multiple boilers to handle hotels, apartments, and large hydronic applications efficiently.
The Navien NHB-80H, installed by 4Most Energy, delivers 55,000 BTU/H of efficient heating for homes up to 2,000 sq ft. Perfect for radiant, baseboard, or air-handler systems.
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.
The Navien NCB-190/060H Combi Boiler is a premium high-efficiency condensing unit that delivers both home heating and on-demand domestic hot water in a single, space-saving system. With an output of 60,000 BTU/h for heating and up to 190,000 BTU/h for hot water,
The Navien NCB-190/080H Combi Boiler, installed by 4Most Energy, delivers efficient home heating and endless hot water in one compact unit. Ideal for homes up to 2,500 sq. ft., it’s perfect for in-floor, radiator, or air-handler systems.
The Navien NCB-240/110H Combi Boiler, installed by 4Most Energy, is ideal for homes up to 3,000 sq. ft. with 3 bathrooms. Perfect for zoning systems like in-floor heating and an air handler, it delivers powerful, efficient heating and endless hot water.
The Navien NCB-240/130H, installed by 4Most Energy, delivers 130,000 BTU heating and 199,000 BTU hot water with a 10.4 GPM max flow rate. Ideal for large homes up to 3,500 sq ft (3 bathrooms), it’s perfect for radiant, radiator, or air-handler systems with high hot-water demand.
The Navien NCB-250/150H, installed by 4Most Energy, delivers 150,000 BTU heating and 210,000 BTU hot water with a 10.8 GPM max flow rate. Ideal for large homes or multi-zone systems, it’s built for high-demand hot water and multiple heating applications.
The Navien NFC-250/175H, installed by 4Most Energy, is the most powerful combi boiler in Navien’s lineup, delivering 199,000 BTU heating and 210,000 BTU hot water with a 10.8 GPM max flow rate. Ideal for large homes up to 4,000 sq ft and high-demand heating and hot water.
Upgrade to a high-efficiency Elite Series furnace:Â Get 6 Months Free on Go Flex or $500 off when buying outright. Warm home, lower bills, zero stress.