10 Best Central Heating Systems Accessories in The UK

Last updated on 12/09/2025

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9.8

Exceptional

Boiler-m8

Boiler-m8 Defender-2 Central Heating Magnetic System Boiler Filter and Inline Full Bore Valves for Sludge Removal 22mm

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Why We Love It

High strength magnetic filtration.
Prevents sludge accumulation effectively.
Easy maintenance under pressure.

Main Highlights

Perfect filter: A remarkably versatile central heating filter made to address the issues brought on by magnetic system sludge.
Defender for Heating system: The new Boiler-m8 magnetic system filters offer your heating system by combining high strength magnetic and stainless steel particle filtration
Sludge Filtration: To preserve central heating systems in good condition and boost overall efficiency, Boiler-m8 central heating system filters remove sludge. This is accomplished by preventing the accumulation of sludge in radiators by the effective removal of system debris
Water tight seal: Our special 2-Way 360-degree Brass diverter body connection includes dual telescopic seals that can be turned while under pressure for simple maintenance, and our full-flow isolating valves have flat-faced unions and high pressure ratings to assure a watertight guarantee.
How it works: Our 2-way 360-degree diverter directs system water into the filter body. Due to the reduced water flow created by our filter design, both magnetic and non-magnetic debris can be removed from the system using the high strength EZY-Clean disposable magnet stack and particle filter.

Magnetic Boiler Filter 22mm Inline for Central Heating inc Full Bore Valves with Metal Handle - Team Supplies TSFILTER

7% Off

Why We Love It

Full bore valves included.
Efficient central heating protection.
Durable metal handle design.

Main Highlights

Magnetic Boiler Filter 22mm Inline for Central Heating inc Full Bore Valves with Metal Handle Team Supplies TSFILTER
Brand : KOMIRO
Product type: HVAC AIR FILTER
1 Count Pack of 1
handle valves heating tsfilter

Central Heating Inhibitor - Super Concentrated 5L C100+

Why We Love It

Super concentrated for better efficiency.
Treats up to 200L systems.
Includes biocide for thorough protection.

Main Highlights

SUPER CONCENTRATED CENTRAL HEATING INHIBITOR
500ml Concentrate - treats a standard heating system up to 200L
This is a super concentrated Inhibitor made to treat larger systems - diluting twice as much as our standard product
Product includes biocide
For best results systems should first be cleansed and then flushed with C300 in accordance with BS7593:2006

Sentinel - X100 Inhibitor 1L, Market Leading Heavy Duty Central Heating Inhibitor, Protection Against Corrosion and limescale, ensures Maximum Heating Efficiency and extends System Life, Clear (88000)

7% Off

Why We Love It

Extends system's lifespan efficiently.
Protects against limescale, corrosion.
Recommended by boiler manufacturers.

Main Highlights

The industry standard inhibitor, providing protection for clean central heating systems against limescale and corrosion; recommended by all major boiler manufacturers
Heavy duty inhibitor which protects against limescale and corrosion
Sentinel X100 Inhibitor will extend the life of the system, ensuring maximum efficiency and minimising fuel usage
Ensures optimum system efficiency
pH neutral formulation

Everbuild P14 Central Heating System Inhibitor, 1 Litre

4% OffFree Shipping

Why We Love It

Compatible with various tank materials.
Suitable for microbore systems.
Treats up to 10 radiators.

Main Highlights

Compatible with plastic and fibreglass header tanks and with all metals used in central heating systems including iron, copper, steel, brass and aluminium
Suitable for microbore systems constructed from plastic pipes
Does not contain mineral oil and suitable for new, existing and extensions to existing heating systems
1 litre will treat systems with up to 10 radiators

Everbuild P11 Central Heating System Cleanser, 1 Litre

8% Off

Why We Love It

Treats various system materials.
Improves heating system efficiency.
Removes sludge and corrosion.

Main Highlights

Compatible with plastic tanks, micro bore and all metals (including aluminium) used in central heating systems.
Economical – 1ltr will treat a 100ltr system capacity.
Enhances heating efficiency.
Removes sludge, scale and corrosion
Eradicates corrosive black oxide and flux residues.

QuickFill - SEL9260: Central Heating Dosing Tool - Add Chemicals Like Fernox Central Heating Inhibitor, Sludge Remover, Leak Sealer & Sentinel X100 to Your Central Heating System

32% OffFree Shipping

Why We Love It

Effortless and accurate dosing.
Quick chemical introduction.
Compatible with radiator tappings.

Main Highlights

Quick and easy dosing of chemicals into central heating systems
Gravity-fed dosing method for effortless and accurate chemical introduction
Suitable for use with inhibitors, sludge removers or anti-freeze
Compatibility: 1/2" BSP radiator tappings
Dose a System with up to 1 Litre of Inhibitor, Antifreeze or sludge remover in under 17 Seconds

Adey MC1 Heating Protector

Free Shipping

Why We Love It

Protects against corrosion and scale.
Reduces heating bills efficiently.
Works with all heating systems.

Main Highlights

Protects against corrosion and scale
Maintains boiler and heating system efficiency, helping to reduce heating bills
Treats up to 125 litres
Suitable for all heating systems

Fernox 56599 F1 500 ml Central Heating Protector

32% Off

Why We Love It

Protects against corrosion effectively.
Achieves significant gas savings.
Prevents radiator cold spots.

Main Highlights

Protects Against Corrosion & Scale
When Used with F3 Cleaner Can Achieve 15% Gas Savings
Stops Frequent Venting of Radiators
Prevents Sticking Pumps
Prevents Radiator Cold Spots

Sentinel - X800 Fast Acting Cleaner 1L, targeted central heating system cleaning inside an hour, restores system efficiency by targeting corrosion debris, ideal for hot and cold systems

7% Off

Why We Love It

The fastest acting cleaner.
Removes debris swiftly.
Ideal for powerflushing.

Main Highlights

The fastest acting central heating cleaner on the market, X800 can remove corrosion deposits and scale in 1 hour
Rapid cleaner, removing corrosion deposits and scale in 1 hour
Unrivalled chemical technology reduces circulation time to just 1 hour
Targeted dissolution of corrosion debris
Ideal for powerflushing, also works in cold systems

8.7

Excellent

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We scanned 1162 products

We reviewed these offers relevant to the Central Heating Systems Accessories within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like Boiler-m8, KOMIRO, Trade Chemicals, Sentinel, Everbuild, SPI, Adey, Fernox, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Central Heating Systems Accessories in the market, we considered we took a deep dive into 5811 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that:

The clear winner of our analysis is Boiler-m8 Defender-2 Central Heating Magnetic System Boiler Filter and Inline Full Bore Valves for Sludge Removal 22mm. We love many things about this product by Boiler-m8. What sets it apart from the competition is High strength magnetic filtration, Prevents sludge accumulation effectively, Easy maintenance under pressure.
The best value product for most shoppers and where user satisfaction is continuously the highest is Magnetic Boiler Filter 22mm Inline for Central Heating inc Full Bore Valves with Metal Handle - Team Supplies TSFILTER by KOMIRO based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Central Heating Systems Accessories and the best cost-to-value ratio is Fernox 56599 F1 500 ml Central Heating Protectorat Fernox with a 32% discount.
Our list of the best Central Heating Systems Accessories is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.

10 Best Central Heating Systems Accessories in The UK

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We scanned 1162 products

We concluded that: