Boilers: Boiler parts and spares Vaillant parts
Got a problem with a Vaillant boiler? As with all faulty boilers, fixing it isn't something you should try and do yourself. A boiler engineer will be able to diagnose the problem and order the replacement Vaillant parts needed to get it working again.
Make sure you buy a boiler that won't let you down. Find out which boiler brands are the most reliable - see our boiler reviews.
Vaillant boiler parts
You shouldn't attempt to remove the outer casing of your boiler to take a look at what's wrong, so it's unlikely you'll know which spare parts your Vaillant boiler might need.
It can be difficult to get hold of boiler spare parts yourself because many of the reputable spare part retailers and online outlets you might already use for household appliance spare parts - Espares or Partmaster, for example - don't offer boiler spares. And several other boiler spares outlets are for trade use only.
Vaillant does not sell boiler spare parts to members of the public - only professionals can order Vaillant boiler parts. Consequently a boiler engineer will usually obtain or order the correct Vaillant boiler parts to fix your boiler on your behalf.
Ask for a breakdown of the spare parts your engineer is ordering, and their respective costs including VAT, or ask to see the product catalogue they're ordering from to ensure you're getting a fair rate on the spare parts. It's also worth taking a look at your Vaillant boiler manual to check what your warranty covers you for and for how long, as well for contact details for troubleshooting advice. Click to find out what you can expect to pay for boiler spare parts.
You can download boiler manuals for current Vaillant models via the Vaillant website. Vaillant also has a technical helpline for homeowners - call it on 0906 802 0251 (calls cost 60p a minute from a BT landline).
Finding a Vaillant boiler repairer
It's important to find a trustworthy, reliable boiler engineer to fix your Vaillant boiler. Ask friends or family for recommendations, or look up a boiler engineer in your area on Which? Local.
Which? Local is a free service for all Which? members. It shows service providers in your local area that have been recommended by other members. You’ll need your Which? membership number to hand to register for Which? Local.
- Top tips to help you get the best boiler service
- Find out more about the cost of installing a boiler
- Check out our guide to the best and worst gas boiler brands