Boilers
![Boilers](https://storage.googleapis.com/sos-websvc/images/products/carrier-boiler.png)
If your home has hot water radiators in each room for heat, you have a boiler to heat the water. Like a furnace, the energy efficiency of a boiler is given as the Annual Fuel Utilization Efficiency (AFUE). Boilers manufactured since 1992 must have an AFUE of at least 80%. We offer a complete line of gas boilers starting at 80% AFUE and up.
![NHB-***](https://storage.googleapis.com/sos-websvc/uploads/core/images/Navien/Navien-NHB.png)
Navien NHB Series Tankless Condensing Gas BoilerView Brochure |
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Model Family: NHB-*** |
Annual Fuel Utilization Efficiency: 95% AFUE |
Energy Star Rated: Energy Star Rated |
Heat Exchanger Warranty: 15 Year Warranty |
Warranty: 5 Year Warranty |
Manufacturer's Stated Benefits:
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![NCB-***E](https://storage.googleapis.com/sos-websvc/uploads/core/images/Navien/NCB-Eimage.png)
Navien NCB-E Combi-BoilersView Brochure |
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Model Family: NCB-***E |
Annual Fuel Utilization Efficiency: 95.0% AFUE |
Energy Star Rated: Energy Star Rated |
Heat Exchanger Warranty: 10 Year Warranty |
Warranty: 5 Year parts |
Manufacturer's Stated Benefits:
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![NFC-***](https://storage.googleapis.com/sos-websvc/uploads/core/images/Navien/Navien-NFC-feature-NFC-NCB-E.png)
Navien NFC Series Condensing Fire Tube Combi-boilersView Brochure |
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Model Family: NFC-*** |
Annual Fuel Utilization Efficiency: 95% AFUE |
Energy Star Rated: Energy Star Rated |
Heat Exchanger Warranty: 10 Year Heat Exchanger Warranty |
Warranty: Parts 5 year warranty |
Manufacturer's Stated Benefits:
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![NFB-***](https://storage.googleapis.com/sos-websvc/uploads/core/images/Navien/Navien-NFB-nv-closed-final.png)
Navien NFB Series High efficiency Condensing Heating boilerView Brochure |
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Model Family: NFB-*** |
Annual Fuel Utilization Efficiency: 95% AFUE |
Energy Star Rated: Energy Star Rated |
Heat Exchanger Warranty: 15 Year Heat Exchanger Warranty |
Warranty: 5 Year Part Warranty |
Manufacturer's Stated Benefits:
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