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MPN: 303926

Vaillant 100mm - 125mm Adapter

Vaillant 100mm - 125mm Adapter


Regular price £44.21 Excl. VAT
£53.05 Incl. VAT
Sale price £44.21 Excl. VAT
£53.05 Incl. VAT
Regular price
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Key Information

Product Information

Vaillant 100mm – 125mm Adapter

The Vaillant 100mm – 125mm Adapter is designed to connect flue components of different diameters within a Vaillant flue system. This adapter allows a 100mm flue connection to be safely connected to a 125mm flue system, making it an essential component when adapting or extending an existing flue installation. Manufactured to Vaillant’s high standards, this adapter ensures a secure, airtight connection that maintains the efficiency and safe operation of your boiler or heating system. It is ideal for installations where flue sizes need to be increased due to system requirements, longer flue runs, or specific installation configurations. Compact, lightweight, and easy to install, the Vaillant 100mm – 125mm Adapter is suitable for use with compatible Vaillant boilers and flue systems, helping installers complete flue installations safely and in line with manufacturer guidelines.

Key Specifications

Product: Vaillant 100mm – 125mm Adapter GTIN: 4024074482445 Gross Weight (Including Packaging): 0.2kg Net Weight: 0.15kg Size: 100mm to 125mm Compatibility: Vaillant Flue Systems

Why You Might Need a Flue Adapter

A flue adapter is used when different flue diameters need to be connected within the same system. This often happens when extending a flue run, upgrading a boiler, or working around installation constraints. Using the correct adapter ensures safe exhaust gas removal and maintains the efficiency and safety of the heating system.

FAQs

What is a 100mm to 125mm flue adapter used for?

It is used to connect flue components where one section is 100mm in diameter and the other is 125mm, allowing different sized flue parts to be connected safely.

Is this adapter compatible with Vaillant boilers?

Yes, this adapter is designed for use with compatible Vaillant flue systems and boilers.

Is the adapter easy to install?

Yes, the adapter is designed for straightforward installation as part of a Vaillant flue system, but it should always be installed in line with manufacturer guidelines. If you want, I can also create a standard template for all Vaillant flue accessories so you can reuse it across the site for SEO consistency.

Why Choose Us

At JJ Building Materials, we're committed to supplying quality building products at competitive prices, backed by the service and expertise you'd expect from an established independent merchant. Whether you're a trade professional managing large-scale projects or a homeowner taking on a DIY renovation, we're here to help you find the right products for the job.

As part of the JJ Roofing Supplies Group, we build on decades of experience supplying construction materials across the UK. We've expanded beyond roofing to offer a growing range of building materials, including timber, insulation, landscaping products, plumbing supplies, flooring, doors, bricks, fencing, garden buildings and much more – all available to order online with nationwide delivery.

We work with many of the industry's leading manufacturers to bring you trusted products that meet the highest standards of quality and performance. Our team is passionate about providing excellent customer service, competitive pricing and a straightforward shopping experience from start to finish.

When you shop with JJ Building Materials, you can expect:

  • Competitive prices on leading brands and quality products.
  • Nationwide delivery across the UK
  • A constantly expanding range of building and landscaping materials.
  • Friendly, knowledgeable customer support.
  • A trusted business backed by the JJ Roofing Supplies Group.

Delivery

Every order is personally reviewed by our experienced team to ensure everything is correct before dispatch. We offer delivery from as little as the next working day on selected products, so please refer to the dark blue Estimated Delivery box above for the expected delivery timeframe for this item.

We work with trusted manufacturers and specialist delivery partners to ensure your order arrives safely and on time. You'll receive tracking details once your order has been dispatched, and if we need to confirm any delivery details, one of our team will contact you directly to keep everything running smoothly.

Roof Tiles & Fittings:

We recommend ordering an additional 10% of roof tiles to allow for any breakages that may occur during delivery or handling. Roof tiles are naturally fragile, and having a few extra on site helps prevent delays and ensures your roofing project can be completed without interruption.

Multiple Products from the Same Supplier

If you're ordering multiple products from the same supplier, your order will be dispatched together once all items are ready. This means the longest lead time will apply.

If you need part of your order sooner, please call us on 01202 113233. We can arrange a split delivery, although an additional shipping charge will apply.

Vaillant 100mm - 125mm Adapter

£44.21

Can I collect this product from a local branch?

Absolutely. Check availability at your nearest branch during checkout or contact us directly.

Do you offer bulk pricing or trade discounts?

Yes, we offer competitive rates for trade customers and bulk orders. Contact our team for a tailored quote.

What if the product arrives damaged?

Please notify us within 48 hours of delivery. We’ll arrange a prompt replacement or refund as needed.

How fast is the delivery time?

Most items are delivered within 2–5 working days, depending on stock and location. Some products may take longer times.

What is the Return Policy?

We accept most returns within 14 days of delivery, provided the items are unused, in their original packaging, and in resalable condition. Please contact our customer service team to arrange a return or discuss any concerns.