Aftermarket replacement parts compatible with selected Vaillant boilers, matched to OEM references and verified boiler models. Trade prices after login.
These are non-original, compatible spare parts. Vaillant is a trademark of its respective owner and is used here solely to describe compatibility.
Part categories for Vaillant
- Expansion vessels compatible with Vaillant
- Pressure sensors compatible with Vaillant
- Temperature sensors (NTC) compatible with Vaillant
- Flow sensors compatible with Vaillant
- Pumps and pump parts compatible with Vaillant
- Seals, gaskets and O-rings compatible with Vaillant
- Service kits compatible with Vaillant
Browse by Vaillant boiler series
Series such as ecoTEC plus, ecoTEC pro and other Vaillant families will appear here as their compatible-part data reaches VERIFIED or HIGH CONFIDENCE. Programmatic series and model pages are a golf 2-3 milestone.
Popular Vaillant OEM references we cover
Once the first anchor products are approved, the most-covered Vaillant OEM references show up here as a quick jump-list.
How to identify your Vaillant part
Use the boiler’s data plate (manufacturer, model code, serial). If you have the OEM number, the fastest route is the search bar at the top of any page. Not sure where to look?
- Find my part – guided wizard
- Contact our technical team with the boiler brand, model, serial and part photo
Compatible with selected Vaillant models
A searchable list of the exact Vaillant boiler models covered by our current stock. We never suggest compatibility we cannot back up.
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Frequently asked questions
Are these original Vaillant parts?
No. HeatSpares supplies non-original, compatible replacement parts. Vaillant is a trademark of its respective owner and appears here only to describe compatibility.
How do you decide a part is compatible with a Vaillant model?
Only VERIFIED or HIGH-CONFIDENCE matches are shown. Sources include official technical documentation, trusted trade data, and our own testing. Matches that need review stay internal.
Do you cover the whole Vaillant range?
No. We open with the categories and series where our stock and compatibility data are strongest, and add coverage as we verify.
Brand names, trademarks and OEM references are used solely to identify compatibility. Unless explicitly stated otherwise, compatible products are not manufactured or endorsed by the original equipment manufacturer.