Vaillant Heat Exchanger, Boiler Heat Exchanger Replacement, Primary Heat Exchanger, Heating Spares Part Number: 20238986

Vaillant Heat Exchanger, Boiler Heat Exchanger Replacement, Primary Heat Exchanger, Heating Spares

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£100.54
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Vaillant Heat Exchanger, Boiler Heat Exchanger Replacement, Primary Heat Exchanger, Heating Spares Part Number: 20238986
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Vaillant Heat Exchanger, Boiler Heat Exchanger Replacement, Primary Heat Exchanger, Heating Spares

SKU W-501695
Manufacturer part number
20238986
EAN
4024074794876
£100.54
inc VAT£83.78 ex VAT
Lead time: 1-5 working days

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Product: Vaillant Heat Exchanger, Boiler Heat Exchanger Replacement, Primary Heat Exchanger, Heating Spares (Part no. W-501695)

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Description

Product Overview

The Vaillant heat exchanger is a genuine boiler spare designed for transferring heat efficiently from the appliance to your heating system. Ideal as a replacement heat exchanger when repairing or servicing compatible Vaillant boilers, it helps restore reliable performance and heating efficiency.

Designed for dependable operation, this replacement part supports consistent heat output and can help reduce issues caused by worn or failing internal components.

Key Features

  • Genuine Vaillant spare – designed for correct fit and dependable performance in compatible boilers.
  • Efficient heat transfer – helps restore effective heating and hot water performance where the original exchanger has deteriorated.
  • Replacement-ready component – ideal for planned servicing or repair work to reduce downtime and restore system reliability.
  • Quality manufacturing – built to support long-term use in domestic heating systems when installed correctly.

Use Case / Application

Suitable for use within compatible Vaillant boiler and central heating systems as a boiler heat exchanger replacement. Commonly installed by heating engineers during fault repair or routine maintenance in residential properties.

Typical environments include:

  • Homes and flats with sealed central heating systems
  • Utility rooms, airing cupboards or kitchen-installed boiler locations
  • Landlord maintenance and planned boiler servicing schedules

Problem → Solution

Ideal for replacing a worn or faulty heat exchanger to help bring your Vaillant boiler back to efficient, reliable operation.

Product Specifications

• Manufacturer – Vaillant
• Manufacturer Part Number (MPN) – 20238986
• EAN / Barcode – 4024074794876
• Product Type – Heat Exchanger

Why Buy from BHL

Vaillant is a leading manufacturer of heating technology, known for reliable boilers and high-quality genuine replacement parts. This Vaillant heat exchanger (Part Number 20238986) is a crucial component designed for efficient heat transfer and dependable repairs. Buy online from BHL for competitive pricing and free* and fast UK delivery, with orders delivered with care from UK warehouses. BHL are a specialist online merchant, trusted by thousands of satisfied customers online since 1998 enjoying thousands of 5 star reviews. *see our terms

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Buying guide: Boiler Spares

Boiler spares are replacement parts for gas, LPG and oil boilers: printed circuit boards, fans, gas valves, pumps, diverter valves, heat exchangers, sensors, pressure gauges, burners, electrodes, seals, casing panels and flue parts. Most are made for one manufacturer, and often for a narrow range of models, so identifying the boiler correctly matters more than anything else.

Identify the boiler first

Find the data badge, usually behind the front panel or under the controls cover. It shows the manufacturer, the model and the GC (Gas Council) number, a seven-digit reference for the exact appliance. Natural gas and LPG versions of the same boiler usually have different GC numbers, and parts can change between production runs, so the GC number and serial number are the safest way to match a part. The boiler's installation and servicing manual lists the parts for each model.

Part numbers and replacements

Search by the manufacturer's part number where you have it. Manufacturers sometimes replace a part with a newer version under a new number; only use a replacement that the manufacturer lists for your model. Some repairs need a kit rather than a single part, for example a part supplied with new seals or fixings.

Safety

By law, work on gas boilers and their gas parts must be carried out by a Gas Safe registered engineer qualified for that type of appliance; ask to see their ID card before work starts. Oil boilers should be worked on by a suitably qualified technician.

For thermostats and programmers, see heating controls.

Shop all Boiler Spares

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