Can you replace the flue temperature sensor on my Navien boiler?

Yes. BoilerPart.ca supplies and professionally installs the genuine Navien flue temperature sensor across Greater Vancouver. Our licensed technicians diagnose the fault, fit the correct OEM part, and test the system.

Do you sell the Navien flue temperature sensor on its own?

No. Boiler parts are supplied and installed by our licensed technicians as part of a repair — we do not sell parts for individual or DIY purchase. We install the Navien flue temperature sensor as part of a certified repair so it is fitted correctly, tested for safety, and keeps your Navien warranty valid.

How do I know my Navien flue temperature sensor has failed?

Typical symptoms include: Flue / exhaust error codes; Nuisance lockouts; Boiler limiting its output; High exhaust temperature warnings. On Navien boilers this can also show as E003 Ignition Failure or E012 Flame Loss. We confirm the diagnosis before any work.

Navien · Air & Venting

Navien Flue Temperature Sensor Replacement in Greater Vancouver

Genuine Navien flue temperature sensor, supplied and professionally installed by Technical Safety BC–licensed gas fitters. Never sold for DIY.

Call (604) 359-1081 Request Service

The Flue Temperature Sensor on Your Navien Boiler

The flue (exhaust) temperature sensor watches the temperature of gases leaving the boiler. Abnormal readings indicate a blocked or failing heat exchanger, scaling, or venting issues, and will trigger a protective shut-down.

On Navien systems — including models such as NCB-240E, NCB-210E, NHB-150 — a failing flue temperature sensor often shows up as e003 ignition failure or related symptoms. We diagnose it precisely and install the correct genuine Navien part.

Typical Lifespan

8-12 years

Brand

Navien

Part Category

Air & Venting

Safety Warning

High flue-temperature codes can signal a scaled heat exchanger, not just a sensor — have it diagnosed.

Signs of a Failing Navien Flue Temperature Sensor

Flue / exhaust error codes

Nuisance lockouts

Boiler limiting its output

High exhaust temperature warnings

Parts Are Professionally Installed — Not Sold for DIY

For your safety and to keep your manufacturer warranty valid, BoilerPart.ca does not sell loose boiler parts over the counter or for self-installation. Under BC regulations, gas appliance components must be installed by a licensed gas fitter. Every part we source is genuine OEM and is professionally fitted, tested, and certified by our Technical Safety BC–licensed technicians as part of a complete repair or installation.