Can you replace the pressure relief valve on my Viessmann boiler?

Yes. BoilerPart.ca supplies and professionally installs the genuine Viessmann pressure relief valve across Greater Vancouver. Our licensed technicians diagnose the fault, fit the correct OEM part, and test the system.

Do you sell the Viessmann pressure relief valve 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 pressure relief valve 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 pressure relief valve has failed?

Typical symptoms include: Water dripping from the discharge pipe; Valve stuck open or weeping; High pressure readings; Valve won't reseat. On Viessmann boilers this can also show as F2 No Flame or F4 Gas Valve Fault. We confirm the diagnosis before any work.

Viessmann · Safety

Viessmann Pressure Relief Valve Replacement in Greater Vancouver

Genuine Viessmann pressure relief valve, supplied and professionally installed by Technical Safety BC–licensed gas fitters. Never sold for DIY.

Call (604) 359-1081 Request Service

The Pressure Relief Valve on Your Viessmann Boiler

The pressure relief valve (PRV / safety valve) is a critical safety device that opens to release water if system pressure rises to an unsafe level, preventing a dangerous boiler over-pressure. A weeping or stuck PRV must be addressed promptly and never plugged.

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

Typical Lifespan

5-7 years

Brand

Viessmann

Part Category

Safety

Safety Warning

A relief valve discharging continuously means dangerous over-pressure — never cap it; call for service now.

Signs of a Failing Viessmann Pressure Relief Valve

Water dripping from the discharge pipe

Valve stuck open or weeping

High pressure readings

Valve won't reseat

Hissing

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.