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Navien NFC-H Series 175K BTU - High Efficiency - Condensing Combi-Boiler - 15:1 DHW
Original price was: $1,598.00.$799.00Current price is: $799.00.
Navien NCB-H Series High Efficiency - Condensing - Combi Gas Boiler - 130 MBH - 15:1 DHW
Original price was: $1,598.00.$799.00Current price is: $799.00.
Navien NFB-C Series 399K BTU – High Efficiency – Condensing Heating Boiler
Original price was: $1,798.00.$899.00Current price is: $899.00.
Seasonal Sale — Limited-Time Savings
- 399,000 BTU/h input with 97.5% AFUE condensing performance
- Stainless steel fire tube heat exchanger, 9.6 gal water capacity
- Direct-vent sealed combustion with sidewall or vertical venting
- Natural gas with field-convertible propane operation
- Cascade-ready for multi-boiler light commercial plants
- ASME H stamped, CSA 4.9 certified and ENERGY STAR qualified
- Wall-mount cabinet: 25-1/10 in. W x 32-4/5 in. H x 22-3/10 in. D
- 120V single-phase power with electronic ignition
| Weight | 154 lbs |
|---|---|
| AMP | 12 |
| BTU | 399000 |
| MBH | 399 |
| NSF | No |
| AFUE | 97.5 % |
| ANSI | ANSI Z21.13 |
| ASME | ASME H |
| Depth | 22-3/10 in |
| Volts | 120V |
| Width | 25-1/10 in |
| Height | 32-4/5 in |
| Length | 25-1/10 in |
Order today — Ships in 1–3 business daysEstimated delivery: 3–8 business days
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Product Highlights
Professional Grade
Built for reliable, repeated use.
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Description
The Navien NFB-399C is a wall-hung condensing heating boiler rated at 399,000 BTU/h with 97.5% AFUE, built for light commercial and large residential hydronic systems. Its stainless steel fire tube heat exchanger and 9.6 gallon water capacity deliver stable supply temperatures for baseboard, panel radiator and radiant floor loops, while the direct-vent sealed combustion design allows flexible PVC, CPVC or polypropylene venting through a sidewall or roof. The unit runs on natural gas and converts to propane in the field, operates on standard 120V power and is ASME H stamped, CSA 4.9 certified and ENERGY STAR qualified. Cascade control lets multiple NFB-C boilers stage together for larger plants, and the compact 25-1/10 in. wide by 32-4/5 in. tall cabinet frees valuable mechanical room floor space. Professional installation by a licensed heating contractor is required.
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Shipping and Delivery
Shipping Summary
| Shipping Destination | United States |
| Shipping Cost | Free Shipping |
| Order Cut-off Time | 2:00 PM (Eastern Time) |
| Processing Time | 1–3 Business Days |
| Transit Time | 2–5 Business Days |
| Estimated Delivery | 3–8 Business Days |
| Business Days | Monday – Friday |
| Shipping Carriers | USPS, UPS or FedEx |
Order Processing
Orders are processed after successful payment confirmation. Orders placed before 2:00 PM Eastern Time are reviewed according to our normal processing schedule.
Processing generally requires 1–3 business days before an order is prepared for shipment. Processing time does not include transit time.
Orders are processed Monday through Friday, excluding weekends and public holidays.
Shipping Carriers
To provide reliable delivery throughout the United States, BookSunrise works with trusted shipping carriers. The carrier selected for your shipment depends on the destination, package size, product type, and service availability.
| Primary Carriers | USPS, UPS, and FedEx |
| Carrier Selection | Determined according to operational availability and delivery requirements. |
| Delivery Area | United States only. |
Shipping Restrictions
At this time, BookSunrise ships only to addresses located within the United States.
We currently do not offer:
- International shipping.
- Military APO/FPO addresses (where carrier limitations apply).
- P.O. Boxes for products that require physical delivery by specific carriers.
- Local pickup.
- In-store collection.
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