Navien NFB-399H
The Navien NFB-399H is a 95% AFUE heating only boiler with a 40,000 – 399,000 BTU output, part of the Navien NFB Fire-Tube Series line. GasBoilers.ca installs, repairs, and maintains the NFB-399H across Greater Vancouver — Red Seal–certified, TSBC-licensed, same-day repair available. Call 604-359-1081.
Navien NFB-399H overview
The NFB uses a fire-tube heat exchanger for maximum durability and efficiency. Designed for hydronic heating systems including radiant floors, baseboards, and fan coils.
95% AFUE
Efficiency
40,000 – 399,000
BTU Output
Up to 12 years
Warranty
NFB-399H specifications
| Model | Navien NFB-399H |
| Series | NFB Fire-Tube Series |
| Type | heating only |
| BTU Output | 40,000 – 399,000 |
| Efficiency | 95% AFUE |
| Warranty | Up to 12 years |
| Origin | Korea |
| Best for | Commercial |
NFB Fire-Tube Series features
Navien NFB-399H services we provide
All work by licensed BC gas-fitters — TSBC-certified.
NFB-399H Installation
Permit, sizing, venting, gas, commissioning.
From $5,800
NFB-399H Repair
Error code diagnosis, parts, full repair.
From $189
NFB-399H Maintenance
Annual tune-up — required for warranty.
From $169
NFB-399H Replacement
Upgrade an older unit. Rebate-eligible.
From $5,800
Emergency Service
Same-day no-heat, leak, CO, gas-smell response.
Call 604-359-1081
Warranty Service
Authorized warranty repairs for Navien.
Warranty-covered
Navien NFB-399H — frequently asked questions
How much does Navien NFB-399H installation cost in Vancouver?
Navien NFB-399H installation starts from $5,800 in Greater Vancouver, including permit, code-compliant venting and gas piping, removal of the old unit, and full commissioning. Final pricing depends on your existing system and a heat-loss calculation. Call 604-359-1081 for a free quote.
What size is the Navien NFB-399H?
The Navien NFB-399H has a heating output of 40,000 – 399,000 BTU, with 95% AFUE efficiency. It is best suited to commercial.
Do you repair the Navien NFB-399H?
Yes. We diagnose and repair the Navien NFB-399H — error codes, ignition faults, no-heat, leaks, low pressure, and sensor issues — from $189. Our technicians are factory-trained on Navien NFB Fire-Tube Series units and carry common parts on the truck.
How often should the Navien NFB-399H be serviced?
Navien recommends annual maintenance to keep the NFB-399H efficient, safe, and within warranty (up to up to 12 years). Our maintenance service starts from $169.
Navien NFB-399H service across Greater Vancouver
We service the NFB-399H in every major Greater Vancouver city.
Book Navien NFB-399H service today
Same-day repair available · Free installation quotes · Licensed gas-fitters