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Discover the exceptional performance of National Flues with our KC Twin Wall to Twin Wall Increaser. This high-quality flue adapter offers a seamless upgrade from Ø125 to Ø150, ideal for solid fuel, oil, and gas installations. Engineered for durability and safety, our increaser is an indispensable accessory for wood stoves, oil boilers, and coal effect fires. Experience superior performance with this competitively priced, HETAS approved, and CE marked product that champions both efficiency and longevity in every installation.
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In Stock
£50.99
Give us a call if you find it cheaper and we'll try to price match.
At a Glance
● Durable stainless steel construction: outer 304 and inner 316 steel for long-lasting performance
● Versatile use: Designed for solid fuel, gas, and oil appliances including wood stoves, gas coal effect fires and boilers
● HETAS approved and CE marked: Complies with EN1856-1 standards ensuring safety and quality
● Efficient diameter expansion: Smoothly transitions flue systems from Ø125 to Ø150
● Secure connection: Features a locking band for robust and reliable installation
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Please Note: All dimensions refer to the internal diameter of flues.
If unsure, please call 01670 206999 to ensure you choose the correct products.
We Won't Be Beaten On Price
At National Flues, we continuously monitor competitor prices. This ensures that we consistently offer you the best deals on all our products. Here’s how we keep your costs low:
Daily Price Matching: Our team adjusts prices to ensure we stay competitive.
Bulk Purchasing Power: We sell a lot, so we can negotiate better rates with suppliers, passing the savings directly to you.
Operational Efficiency: We have streamlined processes to reduce overhead.
Price Match Guarantee: If you find the same product cheaper within 48 hours, we’ll match it and refund the difference.
Free Delivery Over £100: Orders over £100 are free delivery (call us if delivery is required outside the mainland UK).
“I saved 20% on my purchase compared to other retailers. Exceptional service!” – Jane D.
The KC Twin Wall to Twin Wall Increaser Ø 125-Ø 150 is a vital component for any flue system requiring an increase in diameter. Suitable for use on solid fuel, gas, and oil appliances, including wood stoves, gas coal effect fires, and boilers, this increaser ensures a seamless transition between flue sizes. Its construction boasts high-grade materials: a 0.4mm thick outer skin of 304 stainless steel and an inner skin of 316 stainless steel, both ensuring longevity and durability.
The insulation is made of compressed rockwool, offering a density of 128kg/m3, and all components are fully welded for maximum strength. For safety, maintain a 60mm distance from any combustible materials. This KC increaser is HETAS approved and CE marked, meeting EN1856-1 T600 N1 W V2 L50040 G60 and EN1856-1 T200 P1 W V2 L50040 O20 standards.
Installation is simplified with a locking band ensuring secure connections. This product not only meets but exceeds quality and safety standards, making it a smart investment for your heating appliance installations.
HETAS, CE (EN1856-1 T600 N1 D V2 L50040 G60, EN1856-1 T200 P1 W V2 L50040 O20)
Distance To Combustibles
60mm
Warranty
12 Years
Before installation, ensure that the flue system is properly measured and that this increaser is appropriate for your appliance's output requirements. The unit must always be installed with a minimum 60mm distance from any combustible materials such as wood or plasterboard. Secure the increaser using the integrated locking band to create a robust connection between the twin wall flue components. It is advisable to double-check all connections and clearances before commissioning your appliance to comply with current safety regulations. For additional accessories like flue supports or additional sealing components, please refer to our complimentary accessories section.
The KC Twin Wall to Twin Wall Increaser is suitable for use with solid fuel, gas, and oil appliances, such as wood stoves, gas coal effect fires, and oil boilers.
The outer skin is made from 0.4mm thick 304-grade stainless steel, and the inner skin is 0.4mm thick 316-grade stainless steel. The insulation is compressed rockwool with a density of 128kg/m3.
This product is HETAS approved and CE marked, complying with EN1856-1 standards.
Installation involves securing the parts together with a Locking Band, ensuring a 60mm distance from any combustible materials like wood or plasterboard.
The required distance from combustibles is 60mm.
The increaser is designed to facilitate a smooth and secure increase in flue diameter, enhancing the efficiency and safety of your flue system.
It increases from Ø 125mm to Ø 150mm.
Delivery Information +
We work relentlessly to ensure you get your order fast.
Estimated delivery for this product is Wednesday, April 30th. Delivery times of products not in our warehouses depend on product availability and shipping. If you need a definitive delivery time give us a call.
If you need faster stove or fireplace delivery please also give us a call.
We can sometimes reduce longer lead times if we pay the carrier £25 for express delivery.
Visit our Shipping Information page for more information.
Warranty & Returns +
All our products come with warranties. Mi-Flex offers a lifetime guarantee.
Returns for damaged items are covered by insurance; non-damaged returns incur return delivery costs.
Price Match Guarantee +
We will match any price like for like on a retail basis. Give us a call if you find it cheaper and want to buy from us.
Read our review in our KC - Twin Wall to Twin Wall Increaser - Ø 125-Ø 150 buyers guide
Comprehensive Buyers Guide for the KC Twin Wall to Twin Wall Increaser
When planning an upgrade or an installation for your heating system, choosing the right components is crucial. The KC Twin Wall to Twin Wall Increaser is designed to make the process of expanding your flue system both safe and efficient, ensuring that your appliance operates at its optimal capacity.
Understanding the Product
The increaser’s primary role is to transition the flue diameter from Ø125 to Ø150. This slight increase is significant in maintaining proper draft and improving the overall efficiency of your heating system. Built with high-grade stainless steel, the product features an outer skin of 304 and an inner skin of 316 steel, both with a thickness of 0.40mm. This dual-layer construction not only provides durability but also enhances resistance against corrosion and wear.
Safety and Compliance
Safety is paramount in any flue installation, and this product does not compromise. The KC Twin Wall Increaser is HETAS approved and CE marked, meeting the rigorous standards required by EN1856-1. This ensures that the installation maintains a safe clearance, specifically a 60mm gap from combustible materials, thus protecting both your property and its occupants.
Installation Insights
Proper installation is key to harnessing the benefits of this product. Ensure that the increaser is secured with the included locking band, which provides a firm connection between the two flue sections. Before proceeding with any installation, it is recommended to review all the provided installation details and verify that the adjoining appliances conform to safety standards. Additionally, if you are exploring optional accessories such as flue supports, sealing kits, or additional insulation materials, our catalogue offers a variety of choices to perfectly complement your flue system.
The Role of Accessories
In many installations, the base product like the KC Twin Wall Increaser can be enhanced further with optional accessories. These accessories can include specialized flue connectors, additional thermal insulation, or even decorative flue chimney caps that not only improve the aesthetic appeal but also add to the system’s overall efficiency. It is always worth considering these options to ensure that your heating solution is both effective and tailored to your specific needs.
Economic Benefits
Investing in a robust and certified flue system component brings long term savings. Not only does the KC Twin Wall Increaser deliver durability, reducing the need for frequent replacements, but its efficient design also contributes to optimal heat retention. This efficiency translates to lower energy consumption, ensuring that you get the best performance from your heating appliance without compromise.
Technical Considerations
This product’s technical specifications, including its stainless steel build and high-density rockwool insulation, have been engineered for longevity and operational efficiency. The structural integrity provided by its precise fabrication guarantees minimal maintenance and consistent performance throughout its service life.
Frequently Asked Questions
What appliances is this increaser compatible with?
The product is specifically designed for use with solid fuel, gas, and oil appliances, making it versatile enough to suit wood stoves, oil boilers, and even coal effect fires.
How does the installation process work?
Installation is straightforward when following the correct guidelines: secure the increaser with the locking band, maintain the minimum 60mm distance from combustible materials, and check for proper alignment between the flue components.
Are additional accessories needed?
While the increaser is a complete unit on its own, exploring optional accessories such as extra sealing components, additional insulation, or aesthetic enhancements can provide further benefits and should be considered as part of a full-system approach.
Final Considerations
Selecting the right flue system component is a critical step in ensuring the safety and efficiency of your heating installation. With the KC Twin Wall to Twin Wall Increaser, you gain a product that not only meets industry standards but exceeds expectations in durability, safety, and performance. Its compatibility with a wide range of appliances and potential for accessory enhancements makes it an essential component for both residential and commercial heating solutions.
This detailed guide has provided you with insights and technical information to make an informed decision. Whether you are refurbishing an existing system or constructing a new installation, the role of reliable accessories, like our increaser, cannot be understated. They work together synergistically to deliver a system that is both effective and economical over time.
For those seeking an optimal blend of quality, efficiency, and safety, the KC Twin Wall Increaser stands out as the clear choice. Its design is backed by comprehensive safety certifications and built to withstand the demands of continuous operation, ultimately safeguarding the integrity of your heating system.
Embrace a solution that delivers robust performance and adheres to the highest standards of the industry. Every element, from technical specifications to installation guidelines, has been meticulously developed with your needs in mind. Experience the unmatched advantage of a flue system designed with longevity and safety at its core.
Add to cart now or call 01670 206 999.
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