Can you replace the venturi / gas-air mixer on my Viessmann boiler?

Yes. BoilerPart.ca supplies and professionally installs the genuine Viessmann venturi / gas-air mixer across Greater Vancouver. Our licensed technicians diagnose the fault, fit the correct OEM part, and test the system.

Do you sell the Viessmann venturi / gas-air mixer 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 Viessmann venturi / gas-air mixer as part of a certified repair so it is fitted correctly, tested for safety, and keeps your Viessmann warranty valid.

How do I know my Viessmann venturi / gas-air mixer has failed?

Typical symptoms include: Combustion error codes; Hard starting and lockouts; Fluctuating flame; Higher emissions. On Viessmann boilers this can also show as F2 No Flame or F4 Gas Valve Fault. We confirm the diagnosis before any work.

Viessmann · Combustion & Gas

Viessmann Venturi / Gas-Air Mixer Replacement in Greater Vancouver

Genuine Viessmann venturi / gas-air mixer, supplied and professionally installed by Technical Safety BC–licensed gas fitters. Never sold for DIY.

Call (604) 359-1081 Request Service

The Venturi / Gas-Air Mixer on Your Viessmann Boiler

On fully premixed condensing boilers the venturi draws gas into the combustion-air stream at a precise ratio before it reaches the fan and burner. A blocked or cracked venturi upsets the gas-air mix, causing combustion faults and lockouts.

On Viessmann systems — including models such as Vitodens 100-W, Vitodens 200-W, Vitodens 050-W — a failing venturi / gas-air mixer often shows up as f2 no flame or related symptoms. We diagnose it precisely and install the correct genuine Viessmann part.

Typical Lifespan

10-15 years

Brand

Viessmann

Part Category

Combustion & Gas

Safety Warning

Combustion codes that return after cleaning may indicate a cracked venturi or seal.

Signs of a Failing Viessmann Venturi / Gas-Air Mixer

Combustion error codes

Hard starting and lockouts

Fluctuating flame

Higher emissions

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.