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Vaillant service kit 0020023721 in its packaging

Vaillant 0020023721 Service Kit – New

£249.99

New service kit by Vaillant with manufacturer part number 0020023721. Suitable for use in servicing compatible boilers when the correct part number is required.

Avean Boiler Parts serves London trade-counter collection and nationwide UK checkout delivery. Customers should check availability and contact Avean before travelling.

Availability: 5 in stock

Need help with a part or your order? Chat with our team on WhatsApp for the fastest response. Our London and Newcastle teams can see the conversation and help with availability, collection and delivery questions.
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Available through our fulfilment networkThis item can be dispatched nationally. It is not automatically available for collection from the London trade counter; message us on WhatsApp before travelling.
Nationwide delivery availableEligible services, including next-working-day delivery, are shown at checkout and remain subject to courier availability.
UK standard delivery: £9.99 below £100Standard delivery takes 2–3 working days. Baskets of £100 or more are £4.99.

This listing is for a new Vaillant service kit, supplied with manufacturer part number 0020023721. It is offered as a parts item for technicians and engineers who recognise the correct part number for their work.

Buyers should verify the MPN 0020023721 and confirm compatibility with their boiler before ordering. Do not rely on images or assumptions about fitment.

Installation should be carried out by a suitably qualified engineer where required. Avean provides London trade-counter collection and nationwide UK checkout delivery; check live availability before travelling.

The product is sold as described by the listed details; no additional claims about contents, warranty or performance are made here.

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