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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.

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SentinelSentinel / Sentinel X100 System Inhibitor 1L
5%Off
( 435 )

Product code: 68383

Sentinel X100 System Inhibitor 1L

£14.99Was £15.99

ex. VAT £12.49Each

FernoxFernox / Fernox F1 Central Heating Inhibitor & Protector Express 400ml
25%Off
( 169 )

Product code: 45161

Fernox F1 Central Heating Inhibitor & Protector Express 400ml

£17.24Was £22.99

ex. VAT £14.37Each

FernoxFernox / Fernox F1 Central Heating Inhibitor & Protector 500ml
20%Off
( 212 )

Product code: 57090

Fernox F1 Central Heating Inhibitor & Protector 500ml

£15.59Was £19.49

ex. VAT £12.99Each

FlumeFlumeFlume / Flume System Inhibitor 1L
( 15 )

Product code: AE917

Flume System Inhibitor 1L

£10.98

ex. VAT £9.15Each

FernoxFernox / Fernox F4 Central Heating Leak Sealer Express 400ml
20%Off
( 110 )

Product code: 83815

Fernox F4 Central Heating Leak Sealer Express 400ml

£18.39Was £22.99

ex. VAT £15.32Each

SentinelSentinel / Sentinel X400 Sludge Remover 1L
20%Off
( 89 )

Product code: 28178

Sentinel X400 Sludge Remover 1L

£14.99Was £18.74

ex. VAT £12.49Each

FernoxFernox / Fernox F4 Central Heating Leak Sealer 500ml
20%Off
( 155 )

Product code: 92490

Fernox F4 Central Heating Leak Sealer 500ml

£13.59Was £16.99

ex. VAT £11.32Each

SentinelSentinel / Sentinel X800 Fast Acting Cleaner 1L
20%Off
( 61 )

Product code: 88553

Sentinel X800 Fast Acting Cleaner 1L

£16.62Was £20.78

ex. VAT £13.85Each

SentinelSentinel / Sentinel Boiler Noise Reducer 1L
( 53 )

Product code: 75576

Sentinel Boiler Noise Reducer 1L

£13.49

ex. VAT £11.24Each

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

Product code: 81125

Adey MC1+ Central Heating Inhibitor Rapide 300ml

£20.00Was £23.99

ex. VAT £16.67Each

FernoxFernox / Fernox F3 Central Heating Cleaner 500ml
25%Off
( 39 )

Product code: 80785

Fernox F3 Central Heating Cleaner 500ml

£16.49Was £21.99

ex. VAT £13.74Each

SentinelSentinelSentinel / Sentinel X400 System Cleaner 250ml Rapid Dose

Product code: AE584

Sentinel X400 System Cleaner 250ml Rapid Dose

£19.99

ex. VAT £16.66Each

FlumeFlume / Flume System Inhibitor Concentrate 500ml
( 9 )

Product code: AE915

Flume System Inhibitor Concentrate 500ml

£6.49

ex. VAT £5.41Each

ADEYADEY / Adey MagnaClean Professional 1 Chemical Pack 22mm
Save£12
( 46 )

Product code: 27609

Adey MagnaClean Professional 1 Chemical Pack 22mm

£114.49Was £127.00

ex. VAT £95.41Each

SentinelSentinel / Sentinel Leak Sealer 1L
( 60 )

Product code: 87634

Sentinel Leak Sealer 1L

£14.49

ex. VAT £12.07Each

CalmagCalmag / Central Heating Cleanser / Descaler & Inhibitor
( 235 )

Product code: 45091

Central Heating Cleanser / Descaler & Inhibitor

£11.29

ex. VAT £9.41Each

SentinelSentinelSentinel / Sentinel X100 System Inhibitor Rapid Dose 250ml

Product code: AB622

Sentinel X100 System Inhibitor Rapid Dose 250ml

£23.59

ex. VAT £19.66Each

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

Product code: 35906

Adey MC3 Central Heating Cleaner 500ml

£16.89

ex. VAT £14.07Each

Corgi ControlsCorgi ControlsCorgi Controls / Corgi Universal Cleanser 1L
60%Off
( 27 )

Product code: 37524

Corgi Universal Cleanser 1L

£5.00Was £12.58

ex. VAT £4.17Each

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

Product code: 67187

Adey MC1+ Central Heating Inhibitor 500ml

£24.45

ex. VAT £20.37Each

Corgi ControlsCorgi Controls / Corgi Universal Cleanser 500ml Concentrate
( 25 )

Product code: 15428

Corgi Universal Cleanser 500ml Concentrate

£6.19

ex. VAT £5.16Each

ADEYADEY / Adey MagnaClean Professional 2 Chemical Pack 22mm
Save£31
( 71 )

Product code: 68940

Adey MagnaClean Professional 2 Chemical Pack 22mm

£123.99Was £154.99

ex. VAT £103.32Each

FlumeFlume / Flume Universal Cleaner & Sludge Remover 1L
( 1 )

Product code: AE920

Flume Universal Cleaner & Sludge Remover 1L

£13.08

ex. VAT £10.90Each

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

Product code: 73824

Adey MC3+ Central Heating Cleaner Rapide 300ml

£20.99Was £23.99

ex. VAT £17.49Each

FernoxFernox / Fernox F3 Central Heating Cleaner Express 400ml
20%Off
( 11 )

Product code: 70778

Fernox F3 Central Heating Cleaner Express 400ml

£25.19Was £31.49

ex. VAT £20.99Each

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

Product code: 98146

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

£119.99

ex. VAT £99.99Each

FlumeFlume / Flume Leak Sealer 500ml Concentrate
( 1 )

Product code: AE921

Flume Leak Sealer 500ml Concentrate

£9.49

ex. VAT £7.91Each

FernoxFernox / Fernox Powerflow Flux 100g
( 35 )

Product code: 50252

Fernox Powerflow Flux 100g

£9.39

ex. VAT £7.82Each

SentinelSentinel / Sentinel Best Practice Pack - X800 Cleaner, X100 Inhibitor and Vortex300 Filter BPP-V300GRP22-GB
35%Off

Product code: AF752

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

£95.00Was £157.49

ex. VAT £79.17Each

FernoxFernox / Fernox LS-X External Leak Sealer 50ml
( 279 )

Product code: 51999

Fernox LS-X External Leak Sealer 50ml

£7.45

ex. VAT £6.21Each

FlumeFlume / Flume Leak Sealer 1L

Product code: AE919

Flume Leak Sealer 1L

£11.99

ex. VAT £9.99Each

FernoxFernox / Fernox F2 Central Heating Boiler Noise Silencer Express 400ml
15%Off
( 18 )

Product code: 22410

Fernox F2 Central Heating Boiler Noise Silencer Express 400ml

£21.24Was £24.99

ex. VAT £17.70Each

ADEYADEY / Adey MC2 Noise Silencer 500ml
( 3 )

Product code: 25265

Adey MC2 Noise Silencer 500ml

£22.59

ex. VAT £18.82Each

FlumeFlume / Flume System Silencer 1L

Product code: AE916

Flume System Silencer 1L

£10.79

ex. VAT £8.99Each

SentinelSentinel / Sentinel X400 Sludge Remover Rapid Dose 300ml
( 20 )

Product code: 35318

Sentinel X400 Sludge Remover Rapid Dose 300ml

£18.89

ex. VAT £15.74Each

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

Product code: 36023

Sentinel X300 Cleaner for New Systems 1L

£14.39Was £17.99

ex. VAT £11.99Each

FernoxFernox / Fernox F2 Central Heating Boiler Noise Silencer 500ml
20%Off
( 23 )

Product code: 46505

Fernox F2 Central Heating Boiler Noise Silencer 500ml

£21.83Was £27.29

ex. VAT £18.19Each

ADEYADEY / Adey MC4 Leak Sealer 500ml

Product code: 21721

Adey MC4 Leak Sealer 500ml

£23.69

ex. VAT £19.74Each

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

Product code: 60983

Adey MC5 Rapid Flush Cleaner 500ml

£25.49

ex. VAT £21.24Each

FlumeFlume / Flume System Silencer Concentrate 500ml

Product code: AE918

Flume System Silencer Concentrate 500ml

£5.99

ex. VAT £4.99Each