Vaillant Ecotec Pro Plastic Diverter Valve – Part No. 0020020015

The Vaillant 0020020015 Diverter Valve is a genuine replacement part suited to a wide range of Vaillant Ecotec Pro and Ecotec Plus boilers.

This component controls the routing of heated water between the domestic hot water supply and the central heating circuit. When it becomes faulty, sticks, or wears out, it can cause noticeable problems with both heating and hot water performance.

Fitting a new diverter valve can bring your boiler back to proper working order, boost efficiency, and ensure hot water flows reliably throughout your home.

Compatible Boiler Models

Looking for other Vaillant components? Follow this link: Vaillant Spares

Why Choose This Product?

This Vaillant Ecotec Pro Plastic Diverter Valve ensures dependable switching between central heating and hot water modes, addressing common issues like heating staying active while taps are running, or slow hot water delivery. Choosing new gives you maximum reliability backed by a full 12-month warranty, while the refurbished version offers a more budget-friendly repair option with a 6-month warranty — a good fit for cost-conscious boiler maintenance.

Delivery and Return

Orders placed before 3 PM ship the same working day, with standard delivery or next-day courier available at checkout. Items can be returned within 30 days provided they're unused and in original condition. Installation should always be carried out by a Gas Safe registered engineer to ensure safety and correct boiler function.