Boiler spare parts – compatible replacement parts for professionals | HeatSpares

The central hub for compatible boiler spare parts. Whatever brand or model you service, start here and drill down to the exact replacement part.

Browse by category

More categories are being added as we verify compatibility and stock. Safety-critical categories (gas valve components, PCBs) will only open once our compliance step is signed off.

Browse by brand

Additional brands (Bosch, Junkers, Viessmann, Remeha, Intergas, Nefit, Worcester-Bosch, Ideal, Ferroli, Ariston, Immergas, ATAG) follow as their compatibility data reaches VERIFIED or HIGH CONFIDENCE.

What we mean by “compatible”

Compatible spare parts are non-original replacement parts that are engineered to fit and function in selected models of a given brand. We publish a compatibility match only when it is either VERIFIED by an official technical source or our own testing, or HIGH CONFIDENCE across multiple reliable sources. Brand names and OEM references appear on this site solely to identify compatibility.

Read the OEM vs compatible policy →

For heating professionals

HeatSpares is for people who service boilers for a living. Trade prices after login. Fast Europe-wide shipping. Search that speaks OEM numbers. A compatibility database we can back up.

Create a trade account
Why installers switch to HeatSpares

Frequently asked questions

Do you sell original manufacturer parts?
No. We supply non-original, compatible replacement parts. Where you need an OEM-manufactured part, buy it through the original brand’s channel.

Do you cover all boiler brands?
Not yet. Golf 1 opens with Vaillant, Bulex and Saunier Duval, where our compatibility data and stock are deepest. Other brands unlock as their data reaches VERIFIED or HIGH CONFIDENCE.

Where can I see prices?
Create a trade account and prices appear after approval. Volume discounts show as a full per-line table.

Do you ship across Europe?
Yes – to trade accounts. See European delivery.