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Central Heating Additives

Shop high-quality central heating additives from trusted brands like Fernox, Sentinel, Adey and Corgi Controls. At Toolstation, we stock a wide range of central heating cleaners to keep your system running smoothly.

Types of Central Heating Additives


Central heating cleaner removes corrosion and scale to improve the efficiency and longevity of both old and new systems. Regular cleaning can also help reduce boiler noise or use boiler silencer fluid after cleaning for longer-lasting results.

Choose a central heating inhibitor to protect newly cleaned systems against corrosion or limescale build-up whilst extending the life of your system and reducing fuel usage. If your boiler is leaking and losing pressure, try a central heating leak sealer to address the problem quickly.
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Central Heating Cleaners Central Heating Cleaners
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Central Heating Cleaners (16)

Inhibitors & Protectors (11)

Leak Sealers (6)

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Adey Magnaclean
Adey Magnaclean
Adey Magnaclean / Adey MagnaClean Professional 1 Chemical Pack 22mm
( 29 )
Product code: 27609
Adey MagnaClean Professional 1 Chemical Pack 22mm undefined
ex. VAT
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Protects and maintains new and existing systems to Read more

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Fernox
Fernox / Fernox F1 Central Heating Inhibitor & Protector
20% Off
( 104 )
Product code: 45161
Fernox F1 Central Heating Inhibitor & Protector Express 400ml
ex. VAT
Each

Inhibitor which protects against corrosion and lim Read more

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Fernox
Fernox / Fernox F1 Central Heating Inhibitor & Protector
20% Off
( 127 )
Product code: 57090
Fernox F1 Central Heating Inhibitor & Protector 500ml
ex. VAT
Each

Provides long term protection against corrosion an Read more

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Fernox
Fernox
Fernox / Fernox F3 Central Heating Cleaner
20% Off
( 29 )
Product code: 80785
Fernox F3 Central Heating Cleaner 500ml
ex. VAT
Each

Removes sludge, scale and debris from new and exis Read more

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Fernox
Fernox / Fernox F4 Central Heating Leak Sealer
20% Off
( 106 )
Product code: 92490
Fernox F4 Central Heating Leak Sealer 500ml
ex. VAT
Each

Seals small leaks and weeps which may cause pressu Read more

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Fernox
Fernox / Fernox F4 Central Heating Leak Sealer
20% Off
( 70 )
Product code: 83815
Fernox F4 Central Heating Leak Sealer Express 400ml
ex. VAT
Each

Seals small leaks and weeps which may cause pressu Read more

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Fernox
Fernox / Fernox F2 Central Heating Boiler Noise Silencer
20% Off
( 23 )
Product code: 46505
Fernox F2 Central Heating Boiler Noise Silencer 500ml
ex. VAT
Each

Designed to reduce boiler noise and kettling which Read more

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Fernox
Fernox / Fernox F2 Central Heating Boiler Noise Silencer
20% Off
( 8 )
Product code: 22410
Fernox F2 Central Heating Boiler Noise Silencer Express 400ml
ex. VAT
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Designed to reduce boiler noise and kettling which Read more

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Fernox
Fernox / Fernox F3 Central Heating Cleaner
20% Off
( 8 )
Product code: 70778
Fernox F3 Central Heating Cleaner Express 400ml
ex. VAT
Each

Cleaner to remove sludge, scale and debris from ne Read more

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Corgi Controls
Corgi Controls
Corgi Controls / Corgi System Inhibitor
( 115 )
Product code: 38235
Corgi System Inhibitor 1L
ex. VAT
Each

Prevents corrosion, bacteria, scale and sludge in Read more

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Sentinel
Sentinel / Sentinel X100 System Inhibitor
( 197 )
Product code: 68383
Sentinel X100 System Inhibitor 1L
ex. VAT
Each

Provides protection for clean central heating syst Read more

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Corgi Controls
Corgi Controls / Corgi Universal Cleanser
( 17 )
Product code: 37524
Corgi Universal Cleanser 1L
ex. VAT
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For the cleaning of new and existing systems to re Read more

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Sentinel
Sentinel / Sentinel Boiler Noise Reducer
20% Off
( 34 )
Product code: 75576
Sentinel Boiler Noise Reducer 1L
ex. VAT
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Reduces boiler noise whilst simultaneously helping Read more

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Sentinel
Sentinel / Sentinel X800 Fast Acting Cleaner
( 22 )
Product code: 88553
Sentinel X800 Fast Acting Cleaner 1L
ex. VAT
Each

Fast acting cleaning solution for older systems to Read more

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Corgi Controls
Corgi Controls / Corgi Universal Cleanser
( 18 )
Product code: 15428
Corgi Universal Cleanser 500ml Concentrate
ex. VAT
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For the cleaning of new and existing systems to re Read more

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Sentinel
Sentinel
Sentinel / Sentinel X400 Sludge Remover
( 46 )
Product code: 28178
Sentinel X400 Sludge Remover 1L
ex. VAT
Each

High performance cleaner, specifically designed fo Read more

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Fernox
Fernox / Fernox F1 Central Heating Inhibitor & Protector
( 104 )
Product code: 27260
Fernox F1 Central Heating Inhibitor & Protector 265ml
ex. VAT
Each

Provides long term protection against corrosion an Read more

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Corgi Controls
Corgi Controls / Corgi Leak Sealer
( 16 )
Product code: 47157
Corgi Leak Sealer 500ml Concentrate
ex. VAT
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Cures small leaks from joints that are difficult t Read more

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Adey
Adey / Adey MC3 Central Heating Cleaner
( 2 )
Product code: 35906
Adey MC3 Central Heating Cleaner 500ml
ex. VAT
Each

Developed specifically to keep heating systems fre Read more

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Fernox
Fernox / Fernox F3 Central Heating Cleaner
( 8 )
Product code: 49555
Fernox F3 Central Heating Cleaner 265ml
ex. VAT
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Removes sludge, scale and debris from new and exis Read more

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Corgi Controls
Corgi Controls / Corgi Leak Sealer
( 20 )
Product code: 54401
Corgi Leak Sealer 1L
ex. VAT
Each

Cures small leaks from joints that are difficult t Read more

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Sentinel
Sentinel / Sentinel X100 System Inhibitor
( 24 )
Product code: 81368
Sentinel X100 System Inhibitor Rapid Dose 300ml
ex. VAT
Each

Provides protection for clean central heating syst Read more

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Calmag
Calmag / Central Heating Cleanser / Descaler & Inhibitor
( 139 )
Product code: 45091
Central Heating Cleanser / Descaler & Inhibitor undefined
ex. VAT
Each

3 in 1 system protector. Dissolves contaminants to Read more

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Adey
Adey / Adey MC5 Rapid Flush Cleaner
( 2 )
Product code: 60983
Adey MC5 Rapid Flush Cleaner 500ml
ex. VAT
Each

An advanced strength cleaner, starting to remove m Read more

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