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  3. Central Heating Additives

Central Heating Cleaner & Additives

Shop high-quality central heating additives from trusted brands like Fernox , Sentinel, Adey and Corgi Controls. At Toolstation, we stock a wide...

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.
Related Categories
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Sentinel Sentinel / Sentinel X100 System Inhibitor 1L
10% Off
( 426 )

Product code: 68383

Sentinel X100 System Inhibitor 1L

£14.99 was £16.99

ex. VAT £12.49 Each

Sentinel Sentinel / Sentinel X800 Fast Acting Cleaner 1L
10% Off
( 60 )

Product code: 88553

Sentinel X800 Fast Acting Cleaner 1L

£17.99 was £20.78

ex. VAT £14.99 Each

Calmag Calmag / Central Heating Cleanser / Descaler & Inhibitor
( 234 )

Product code: 45091

Central Heating Cleanser / Descaler & Inhibitor

£11.29

ex. VAT £9.41 Each

Fernox Fernox / Fernox F1 Central Heating Inhibitor & Protector 500ml
( 211 )

Product code: 57090

Fernox F1 Central Heating Inhibitor & Protector 500ml

£19.49

ex. VAT £16.24 Each

Flume Flume / Flume System Inhibitor Concentrate 500ml
( 5 )

Product code: AE915

Flume System Inhibitor Concentrate 500ml

£6.49

ex. VAT £5.41 Each

Flume Flume / Flume System Inhibitor 1L
( 9 )

Product code: AE917

Flume System Inhibitor 1L

£10.98

ex. VAT £9.15 Each

Fernox Fernox / Fernox LS-X External Leak Sealer 50ml
( 276 )

Product code: 51999

Fernox LS-X External Leak Sealer 50ml

£7.45

ex. VAT £6.21 Each

Fernox Fernox / Fernox F1 Central Heating Inhibitor & Protector Express 400ml
( 167 )

Product code: 45161

Fernox F1 Central Heating Inhibitor & Protector Express 400ml

£22.99

ex. VAT £19.16 Each

Sentinel Sentinel / Sentinel Eliminator Vortex250 Ultra-Compact Magnetic Filter Protection Pack 22mm Filter & 1 Litre Chemical Protection Pack
25% Off
( 16 )

Product code: 98146

Sentinel Eliminator Vortex250 Ultra-Compact Magnetic Filter Protection Pack 22mm Filter & 1 Litre Chemical Protection Pack

£89.99 was £119.99

ex. VAT £74.99 Each

Sentinel Sentinel / Sentinel X400 Sludge Remover 1L
15% Off
( 89 )

Product code: 28178

Sentinel X400 Sludge Remover 1L

£14.99 was £17.99

ex. VAT £12.49 Each

Fernox Fernox / Fernox F4 Central Heating Leak Sealer 500ml
( 154 )

Product code: 92490

Fernox F4 Central Heating Leak Sealer 500ml

£16.99

ex. VAT £14.16 Each

ADEY ADEY / Adey MagnaClean Professional 1 Chemical Pack 22mm
( 46 )

Product code: 27609

Adey MagnaClean Professional 1 Chemical Pack 22mm

£114.49

ex. VAT £95.41 Each

Corgi Controls Corgi Controls / Corgi Universal Cleanser 500ml Concentrate
( 24 )

Product code: 15428

Corgi Universal Cleanser 500ml Concentrate

£6.19

ex. VAT £5.16 Each

Fernox Fernox / Fernox F4 Central Heating Leak Sealer Express 400ml
( 109 )

Product code: 83815

Fernox F4 Central Heating Leak Sealer Express 400ml

£22.99

ex. VAT £19.16 Each

Sentinel Sentinel / Sentinel Boiler Noise Reducer 1L
25% Off
( 53 )

Product code: 75576

Sentinel Boiler Noise Reducer 1L

£9.99 was £13.49

ex. VAT £8.32 Each

ADEY ADEY / Adey MC1+ Central Heating Inhibitor 500ml
( 22 )

Product code: 67187

Adey MC1+ Central Heating Inhibitor 500ml

£24.45

ex. VAT £20.37 Each

Corgi Controls Corgi Controls Corgi Controls / Corgi Universal Cleanser 1L
60% Off
( 26 )

Product code: 37524

Corgi Universal Cleanser 1L

£5.00 was £12.58

ex. VAT £4.17 Each

Sentinel Sentinel / Sentinel Leak Sealer 1L
( 60 )

Product code: 87634

Sentinel Leak Sealer 1L

£14.49

ex. VAT £12.07 Each

Fernox Fernox / Fernox F3 Central Heating Cleaner 500ml
( 39 )

Product code: 80785

Fernox F3 Central Heating Cleaner 500ml

£21.99

ex. VAT £18.32 Each

Flume Flume / Flume Leak Sealer 500ml Concentrate

Product code: AE921

Flume Leak Sealer 500ml Concentrate

£9.49

ex. VAT £7.91 Each

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

Product code: 35906

Adey MC3 Central Heating Cleaner 500ml

£16.89

ex. VAT £14.07 Each

ADEY ADEY / Adey MC1+ Central Heating Inhibitor Rapide 300ml
15% Off
( 16 )

Product code: 81125

Adey MC1+ Central Heating Inhibitor Rapide 300ml

£20.00 was £23.99

ex. VAT £16.67 Each

ADEY ADEY / Adey MagnaClean Professional 2 Chemical Pack 22mm
Save £30
( 71 )

Product code: 68940

Adey MagnaClean Professional 2 Chemical Pack 22mm

£124.79 was £154.99

ex. VAT £103.99 Each

Sentinel Sentinel / Sentinel X300 Cleaner for New Systems 1L
20% Off
( 6 )

Product code: 36023

Sentinel X300 Cleaner for New Systems 1L

£13.99 was £17.99

ex. VAT £11.66 Each

Fernox Fernox / Fernox Powerflow Flux 100g
( 35 )

Product code: 50252

Fernox Powerflow Flux 100g

£9.79

ex. VAT £8.16 Each

Flume Flume / Flume Universal Cleaner & Sludge Remover 1L

Product code: AE920

Flume Universal Cleaner & Sludge Remover 1L

£13.08

ex. VAT £10.90 Each

ADEY ADEY / Adey MC3+ Central Heating Cleaner Rapide 300ml
10% Off
( 3 )

Product code: 73824

Adey MC3+ Central Heating Cleaner Rapide 300ml

£20.99 was £23.99

ex. VAT £17.49 Each

Flume Flume / Flume Leak Sealer 1L

Product code: AE919

Flume Leak Sealer 1L

£11.99

ex. VAT £9.99 Each

Flume Flume / Flume System Silencer Concentrate 500ml

Product code: AE918

Flume System Silencer Concentrate 500ml

£5.99

ex. VAT £4.99 Each

Fernox Fernox / Fernox F3 Central Heating Cleaner Express 400ml
( 11 )

Product code: 70778

Fernox F3 Central Heating Cleaner Express 400ml

£31.49

ex. VAT £26.24 Each

Flume Flume / Flume System Silencer 1L

Product code: AE916

Flume System Silencer 1L

£10.79

ex. VAT £8.99 Each

ADEY ADEY / Adey MC4 Leak Sealer 500ml

Product code: 21721

Adey MC4 Leak Sealer 500ml

£23.69

ex. VAT £19.74 Each

ADEY ADEY / Adey MC2 Noise Silencer 500ml
( 3 )

Product code: 25265

Adey MC2 Noise Silencer 500ml

£22.59

ex. VAT £18.82 Each

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

Product code: 60983

Adey MC5 Rapid Flush Cleaner 500ml

£25.49

ex. VAT £21.24 Each

Fernox Fernox / Fernox F2 Central Heating Boiler Noise Silencer Express 400ml
( 18 )

Product code: 22410

Fernox F2 Central Heating Boiler Noise Silencer Express 400ml

£26.29

ex. VAT £21.91 Each

Sentinel Sentinel / Sentinel Best Practice Pack - X800 Cleaner, X100 Inhibitor and Vortex300 Filter BPP-V300GRP22-GB

Product code: AF752

Sentinel Best Practice Pack - X800 Cleaner, X100 Inhibitor and Vortex300 Filter BPP-V300GRP22-GB

£157.49

ex. VAT £131.24 Each

Fernox Fernox / Fernox F2 Central Heating Boiler Noise Silencer 500ml
( 23 )

Product code: 46505

Fernox F2 Central Heating Boiler Noise Silencer 500ml

£27.29

ex. VAT £22.74 Each