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.
Fernox
( 23 )

£24.48

ex. VAT £20.40 Each

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10 available for delivery

Sentinel
35% Off
( 9 )

£77.98 was £119.98

ex. VAT £64.98 Each

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Out of stock for delivery

Sentinel Sentinel
( 19 )

£19.98

ex. VAT £16.65 Each

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Out of stock for delivery

ADEY
( 13 )

£499.98

ex. VAT £416.65 Each

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10 available for delivery

ADEY
( 3 )

£24.98

ex. VAT £20.82 Each

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12 available for delivery

ADEY

Product code: 21721

Adey MC4 Leak Sealer 500ml

£22.28

ex. VAT £18.57 Each

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20+ available for delivery

Corgi Controls
( 26 )

£9.48

ex. VAT £7.90 Each

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20+ available for delivery

( 1 )

Product code: 80459

Adey ProCheck® Refill Kit

£94.48

ex. VAT £78.73 Each

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8 available for delivery

ADEY
15% Off
( 3 )

£18.08 was £21.28

ex. VAT £15.07 Each

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6 available for delivery

Fernox
( 32 )

Product code: 50252

Fernox Powerflow Flux 100g

£8.68

ex. VAT £7.23 Each

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20+ available for delivery

Sentinel
( 48 )

£22.48

ex. VAT £18.73 Each

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Out of stock for delivery

Corgi Controls
( 21 )

£12.58

ex. VAT £10.48 Each

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20+ available for delivery

Fernox
( 11 )

£26.48

ex. VAT £22.07 Each

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20 available for delivery

Sentinel
20% Off
( 6 )

£11.82 was £14.78

ex. VAT £9.85 Each

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20+ available for delivery

Product code: 49298

Adey ProCheck® Test Kit

£134.98

ex. VAT £112.48 Each

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4 available for delivery