Baxi Mfit Flue Extension 1000mm, Boiler Flue Pipe Extension, Flue Duct Length, Replacement Flue Section Part Number: 5111074

Baxi Mfit Flue Extension 1000mm, Boiler Flue Pipe Extension, Flue Duct Length, Replacement Flue Section

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£119.44
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Baxi Mfit Flue Extension 1000mm, Boiler Flue Pipe Extension, Flue Duct Length, Replacement Flue Section Part Number: 5111074
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Baxi Mfit Flue Extension 1000mm, Boiler Flue Pipe Extension, Flue Duct Length, Replacement Flue Section

SKU W-427557
Manufacturer part number
5111074
EAN
5033313010515
£119.44
inc VAT£99.53 ex VAT
Lead time: 1-5 working days

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Product: Baxi Mfit Flue Extension 1000mm, Boiler Flue Pipe Extension, Flue Duct Length, Replacement Flue Section (Part no. W-427557)

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Description

Product Overview

The Baxi Mfit 1000mm flue extension is a genuine flue pipe section designed to extend a compatible boiler flue system run. It helps achieve the required flue length where the boiler position and termination point need additional reach. Ideal for neat, compliant installations using matching manufacturer components.

Key Features

  • 1000mm extension length – adds extra reach to your flue run for flexible boiler positioning.
  • Genuine Baxi part – supports correct fit and compatibility within the Mfit flue system.
  • Designed for flue system continuity – helps maintain a consistent, professional finish across the installation.
  • Suitable for replacement or new installs – makes it easy to extend or modify an existing flue route when layouts change.

Use Case / Application

Suitable for extending compatible Baxi Mfit boiler flue systems in domestic and light commercial settings. Commonly used when routing a flue through external walls or up through ceiling voids, such as in kitchens, utility rooms, airing cupboards, or plant areas. Ideal for installers needing additional flue length to meet siting and termination requirements.

Problem → Solution

Perfect for extending a boiler flue run when the standard flue length is not enough, helping you achieve the required route using compatible manufacturer components.

Product Specifications

Manufacturer – Baxi
Manufacturer Part Number (MPN) – 5111074
EAN / Barcode – 5033313010515
Dimensions / Size – 1000mm length
Product Type – Flue extension

Why Buy from BHL

Choose Baxi flue components with confidence and buy online from BHL at competitive pricing. As a specialist online merchant trusted by thousands of satisfied customers since 1998, we are proud to have thousands of 5 star reviews. Order the Baxi 5111074 Mfit flue extension 1000mm today for free* and fast UK delivery, with products delivered with care from UK warehouses. Shop genuine parts and get your installation moving quickly with BHL.
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Reviews

Buying guide: Domestic Boiler Accessories

Domestic boiler accessories are the parts that complete a boiler installation: flue kits, extensions, bends and terminals, plume management kits, programmers, room thermostats and wireless controls, weather compensators, filters, pressure relief valve kits and natural gas to LPG conversion kits. Boiler and flue packs are also included.

Flues

Flue systems are designed for particular boiler ranges, so use only the flue parts the boiler manufacturer lists for your model. Concentric flues run the air intake around the exhaust pipe and are commonly 60/100mm or 80/125mm in diameter; twin pipe systems use separate air and exhaust pipes. The installation manual sets the maximum flue length for each boiler, and every bend or elbow reduces the length allowed. Plume management kits redirect the visible plume from a condensing boiler away from where it could cause a nuisance.

Controls

Programmers set the times for heating and hot water, and room thermostats, wired or wireless, switch the heating according to the room temperature. A weather compensator adjusts the boiler's output using an outdoor temperature sensor. In England, gas and oil boilers need time and temperature controls, and when a combi boiler is installed one extra energy saving measure is also expected: flue gas heat recovery, weather compensation, load compensation or a smart control with automation and optimisation. Check that any control is compatible with the boiler, as some are made for one manufacturer only.

Safety

Work on gas pipework, appliances and their gas parts must only be carried out by a Gas Safe registered engineer. Oil boilers should be worked on by an OFTEC registered technician.

For replacement parts, see boiler spares; for thermostats and programmers, see heating controls.

Shop all Domestic Boiler Accessories

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