Find a spare part by type
By component, with price and stock. What you may replace yourself and what an installer should do.
Choose the type of part
Pumps
Circulating pumps for boilers and heat pumps
445 partsView →
Circuit boards
Burner controls and control boards
1,338 partsView →
Heat exchangers
Plate heat exchangers for hot water
1,027 partsView →
Fans
Burner fans and fan motors
799 partsView →
Gas valves
Gas control valves and regulation
826 partsView →
Ignition and ionisation
Ignition and ionisation electrodes
600 partsView →
Three-way valves
Valves, actuators and hydro blocks
400 partsView →
Sensors and probes
NTC probes, pressure and flow sensors
631 partsView →
Expansion vessels
Vessels for heating and hot water
115 partsView →
Service kits
Gaskets and service kits per appliance
314 partsView →
Error code on the display?
Find the cause and the right part
By brand and applianceLook up →
MVHR filters
Choose the brand and model of your unit
Selection guideChoose →
Over 36,000 genuine spare parts for boilers, heat pumps, water heaters, ventilation and air conditioning from almost ninety brands. Every item with manufacturer part number, current price and stock status. Search by part type, by brand or directly by part number. To EU countries outside the Netherlands and Belgium we only ship what can go by parcel post: genuine spare parts and small items (thermostats, taps, filters, sensors, pumps, circuit boards and the like), plus electric heating up to 32 kg. Complete appliances — central heating boilers, heat pumps, storage and heat pump water heaters, radiators, split air conditioners — and home batteries are currently not shipped there; compact kitchen water heaters are.
Across Europe, spare parts mostly move through manufacturer service networks and trade suppliers that sell to businesses only. What a part really costs and how long you wait is rarely visible. Here it is simply on the page.
What you may replace yourself
Parts outside the gas circuit can be replaced by a competent DIYer.
- Displays 518
- Filters 503
- Condensate traps 352
- Thermostats 268
- Pressure gauges 107
- Sacrificial anodes 99
- Expansion vessels 76
- Gaskets and seals 2,592
What an installer should do
Gas-carrying parts and safety devices are for a qualified installer. You can still order and have the part ready — one trip fewer for the installer, less waiting for you.
Search by manufacturer part number
The shortest route is not the brand but the number. If it is on the old part, in your service report or on your installer’s quote, type it into the catalogue. Part numbers do not depend on language or brand name: whether your appliance says Glow-worm and our item says Vaillant makes no difference if the number matches.
Frequently asked questions
Can I replace parts myself?
Non-gas parts, yes: filters, anodes, thermostats, condensate traps, gauges, expansion vessels and gaskets. Work on gas-carrying parts — gas valve, burner, electrode, heat exchanger, flue — is for a qualified installer in every EU country, and in most it is a legal requirement.
Do you sell to private customers?
Yes. That is the difference with the trade suppliers, who normally require an installer account. With us, price and stock are shown openly and you order without a trade registration.
How do I find the right part number?
Three routes: the manufacturer number on the old part, brand then series in the catalogue, or a photo of the rating plate e-mailed to info@instalpunt.nl.
Guides: EU heating rules, energy prices & repair
What applies across the EU, last reviewed October 2026 — from fossil boiler rules to the 2028 carbon price.