Can you replace the secondary heat exchanger on my Navien boiler?

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

Do you sell the Navien secondary heat exchanger 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 secondary heat exchanger 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 secondary heat exchanger has failed?

Typical symptoms include: Reduced efficiency and higher bills; Boiler not reaching temperature; Excess or discoloured condensate; Flue-related error codes. On Navien boilers this can also show as E003 Ignition Failure or E012 Flame Loss. We confirm the diagnosis before any work.

Navien · Combustion & Gas

Navien Secondary Heat Exchanger Replacement in Greater Vancouver

Genuine Navien secondary heat exchanger, supplied and professionally installed by Technical Safety BC–licensed gas fitters. Never sold for DIY.

Call (604) 359-1081 Request Service

The Secondary Heat Exchanger on Your Navien Boiler

The secondary (or condensing) heat exchanger sits in the flue path of high-efficiency boilers and extracts additional heat from the exhaust gases before they leave the appliance. It is where flue-gas condensation forms, so it operates in a wet, mildly acidic environment and is prone to blockage and corrosion over time.

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

Typical Lifespan

10-15 years

Brand

Navien

Part Category

Combustion & Gas

Safety Warning

Persistent flue error codes with a high condensate output point to a failing secondary exchanger.

Signs of a Failing Navien Secondary Heat Exchanger

Reduced efficiency and higher bills

Boiler not reaching temperature

Excess or discoloured condensate

Flue-related error codes

Internal corrosion or leaking

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.