Any Home. Any Season. One System.
Upgrade to a high-efficiency heat pump to heat and cool with one system, reduce energy costs, and get up to $7,500 in rebates.
NAVIEN Boiler NFB-175H 175,000 BTU
$3,706.00The 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.
NAVIEN Boiler NHB-110H 110,000 BTU
$3,079.00The 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.
NAVIEN Boiler NHB-150H 150,000 BTU
$3,443.00The 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.
NAVIEN Boiler NHB-200H 199,000 BTU
$3,978.00The 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.
Navien Boiler NHB-55H, 55,000 BTU
$2,569.00The 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.
NAVIEN Boiler NHB-80H, 80,000 BTU
$2,815.00The 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.
Rinnai IP150S Heat Only Boiler 150,000 BTU I-Series Plus
Original price was: $9,590.00.$8,299.00Current price is: $8,299.00.The Rinnai I-Series Plus IP150S delivers a massive 150,000 BTU of dedicated heating output. The ultimate solution for large properties, multi-zone radiant heating, and high-demand radiator systems.
Rinnai IP199S Heat Only Boiler 199,000 BTU I-Series Plus
Original price was: $9,990.00.$8,799.00Current price is: $8,799.00.The Rinnai I-Series Plus IP199S is a High-Efficiency Condensing Boiler delivering a massive 199,000 BTU of dedicated heating power. The definitive solution for large luxury homes, expansive snow-melting systems, and commercial-grade applications.
Rinnai IP120S Heat Only Boiler 120,000 BTU I-Series Plus
Original price was: $9,590.00.$8,199.00Current price is: $8,199.00.The Rinnai I-Series Plus IP120S delivers 120,000 BTU of dedicated heating power. Designed to replace standard boilers while retaining your existing hot water system or pairing with an indirect tank.
