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 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
( 394 )

£19.74

ex. VAT £16.45 Each

Sentinel Sentinel Sentinel / Sentinel X800 Fast Acting Cleaner 1L
( 55 )

£20.78

ex. VAT £17.32 Each

Sentinel Sentinel Sentinel / Sentinel X400 Sludge Remover 1L
( 80 )

£18.74

ex. VAT £15.62 Each

Sentinel Sentinel / Sentinel Boiler Noise Reducer 1L
25% Off
( 51 )

£12.62 was £17.68

ex. VAT £10.52 Each

Fernox Fernox / Fernox F1 Central Heating Inhibitor & Protector 500ml
15% Off
( 194 )

£17.66 was £20.78

ex. VAT £14.72 Each

Calmag Calmag / Central Heating Cleanser / Descaler & Inhibitor
( 225 )

£11.20

ex. VAT £9.33 Each

Flume Flume / Flume System Inhibitor Concentrate 500ml
10% Off

£5.84 was £6.49

ex. VAT £4.87 Each

Corgi Controls Corgi Controls / Corgi Universal Cleanser 500ml Concentrate
60% Off
( 22 )

£4.97 was £12.58

ex. VAT £4.14 Each

Flume Flume Flume / Flume System Inhibitor 1L
10% Off

Product code: AE917

Flume System Inhibitor 1L

£9.88 was £10.98

ex. VAT £8.23 Each

Fernox Fernox / Fernox LS-X External Leak Sealer 50ml
( 244 )

£6.81

ex. VAT £5.67 Each

Fernox Fernox / Fernox F4 Central Heating Leak Sealer 500ml
20% Off
( 143 )

£13.84 was £17.66

ex. VAT £11.53 Each

Fernox Fernox / Fernox F1 Central Heating Inhibitor & Protector Express 400ml
15% Off
( 164 )

£21.24 was £24.99

ex. VAT £17.70 Each

Sentinel Sentinel / Sentinel Eliminator Vortex250 Ultra-Compact Magnetic Filter Protection Pack 22mm Filter & 1 Litre Chemical Protection Pack
40% Off
( 12 )

£69.98 was £119.98

ex. VAT £58.32 Each

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 Eliminator Vortex300 Filter GRP 22mm Valves
10% Off
( 22 )

£71.97 was £79.97

ex. VAT £59.97 Each

Fernox Fernox / Fernox F4 Central Heating Leak Sealer Express 400ml
( 107 )

£23.44

ex. VAT £19.53 Each

Sentinel Sentinel Sentinel / Sentinel X400 Sludge Remover Rapid Dose 300ml
20% Off
( 19 )

£15.30 was £19.98

ex. VAT £12.75 Each

ADEY ADEY / Adey MagnaClean Professional 1 Chemical Pack 22mm
Save £11
( 44 )

£102.94 was £114.38

ex. VAT £85.78 Each

ADEY ADEY / Adey MC3+ Central Heating Cleaner Rapide 300ml
( 2 )

£23.95

ex. VAT £19.96 Each

Fernox Fernox / Fernox F3 Central Heating Cleaner 500ml
15% Off
( 37 )

£19.53 was £22.98

ex. VAT £16.27 Each

Flume Flume / Flume Universal Cleaner & Sludge Remover 1L
10% Off

£10.79 was £11.99

ex. VAT £8.99 Each

Corgi Controls Corgi Controls Corgi Controls / Corgi Boiler Noise Silencer 1L
60% Off
( 10 )

£4.97 was £12.58

ex. VAT £4.14 Each

ADEY ADEY / Adey MagnaClean Professional 2 Chemical Pack 22mm
( 70 )

£161.18

ex. VAT £134.32 Each

Fernox Fernox / Fernox Powerflow Flux 100g
( 34 )

Product code: 50252

Fernox Powerflow Flux 100g

£8.99

ex. VAT £7.49 Each