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.
Sentinel Sentinel Sentinel / Sentinel X100 System Inhibitor 1L
( 259 )

£13.98

ex. VAT £11.65 Each

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20+ available for delivery

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Sentinel Sentinel Sentinel / Sentinel X800 Fast Acting Cleaner 1L
( 32 )

£14.88

ex. VAT £12.40 Each

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9 available for delivery

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Fernox Fernox / Fernox F3 Central Heating Cleaner 500ml
20% Off
( 30 )

£19.82 was £24.78

ex. VAT £16.52 Each

Product variations Select from 2 variations
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20+ available for delivery

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Sentinel Sentinel / Sentinel Boiler Noise Reducer 1L
10% Off
( 38 )

£15.28 was £16.98

ex. VAT £12.73 Each

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7 available for delivery

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Fernox Fernox / Fernox F3 Central Heating Cleaner Express 400ml
20% Off
( 9 )

£19.98 was £24.98

ex. VAT £16.65 Each

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Out of stock for delivery

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Fernox Fernox / Fernox F1 Central Heating Inhibitor & Protector 500ml
20% Off
( 145 )

£19.82 was £24.78

ex. VAT £16.52 Each

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20+ available for delivery

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Fernox Fernox / Fernox F1 Central Heating Inhibitor & Protector Express 400ml
20% Off
( 126 )

£20.94 was £26.18

ex. VAT £17.45 Each

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20+ available for delivery

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Adey Magnaclean Adey Magnaclean / Adey MagnaClean Professional 2 Chemical Pack 22mm
( 49 )

£154.98

ex. VAT £129.15 Each

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20+ available for delivery

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Corgi Controls Corgi Controls / Corgi System Inhibitor 1L
( 153 )

Product code: 38235

Corgi System Inhibitor 1L

£12.58

ex. VAT £10.48 Each

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20+ available for delivery

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Sentinel Sentinel / Sentinel X400 Sludge Remover 1L
( 52 )

£26.78

ex. VAT £22.32 Each

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10 available for delivery

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Sentinel Sentinel / Sentinel X300 Cleaner for New Systems 1L
( 5 )

£21.18

ex. VAT £17.65 Each

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20+ available for delivery

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Adey Adey / Adey MC1+ Central Heating Inhibitor 500ml
( 13 )

£22.98

ex. VAT £19.15 Each

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20+ available for delivery

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Sentinel Sentinel / Sentinel X100 System Inhibitor Rapid Dose 300ml
( 34 )

£25.28

ex. VAT £21.07 Each

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5 available for delivery

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Corgi Controls Corgi Controls / Corgi Universal Cleanser 1L
( 20 )

Product code: 37524

Corgi Universal Cleanser 1L

£12.58

ex. VAT £10.48 Each

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14 available for delivery

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Adey Adey / Adey MC1+ Central Heating Inhibitor Rapide 300ml
( 12 )

£21.48

ex. VAT £17.90 Each

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19 available for delivery

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Adey Adey / Adey MC3+ Central Heating Cleaner Rapide 300ml
( 1 )

£21.48

ex. VAT £17.90 Each

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11 available for delivery

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Adey Adey / Adey MC3 Central Heating Cleaner 500ml
( 3 )

£15.98

ex. VAT £13.32 Each

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4 available for delivery

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Adey Magnaclean Adey Magnaclean / Adey MagnaCleanse Complete Solution Kit
( 13 )

£499.98

ex. VAT £416.65 Each

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Out of stock for delivery

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Adey Adey / Adey MC5 Rapid Flush Cleaner 500ml
( 3 )

£24.98

ex. VAT £20.82 Each

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Out of stock for delivery

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Adey Magnaclean Adey Magnaclean / Adey MagnaClean Professional 1 Chemical Pack 22mm
5% Off
( 38 )

£99.98 was £105.98

ex. VAT £83.32 Each

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20+ available for delivery

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Fernox Fernox / Fernox LS-X External Leak Sealer 50ml
( 148 )

£6.38

ex. VAT £5.32 Each

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20+ available for delivery

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Fernox Fernox / Fernox F4 Central Heating Leak Sealer Express 400ml
( 85 )

£26.18

ex. VAT £21.82 Each

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19 available for delivery

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Corgi Controls Corgi Controls Corgi Controls / Corgi System Inhibitor 500ml Concentrate
( 54 )

£7.68

ex. VAT £6.40 Each

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20+ available for delivery

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Fernox Fernox / Fernox F4 Central Heating Leak Sealer 500ml
( 118 )

£24.78

ex. VAT £20.65 Each

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20+ available for delivery

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