Central Heating Inhibitors & Protectors

Shop high-quality central heating inhibitors and protectors to remove limescale, corrosion and debris from your radiators. At Toolstation, we stock radiator inhibitors from trusted brands like Adey, Fernox, Sentinel and Corgi Controls.

What Are Central Heating Inhibitors Used For?



Central heating inhibitors protect your radiators and keep the system running smoothly. After cleaning your system with specialist products to remove limescale and corrosion, use a radiator inhibitor to prevent further build-up.

Using boiler inhibitor products can prolong the life of your system, improve energy efficiency and reduce fuel costs. Applying an inhibitor solution to your system once a year is recommended, as the anti-corrosion and descaling chemicals will break down over time, reducing their effectiveness.
Sentinel Sentinel / Sentinel X100 System Inhibitor 1L
30% Off
( 331 )

£13.28 was £18.98

ex. VAT £11.07 Each

Product options Select from 1 option
Set Store

Out of stock for delivery

Fernox Fernox / Fernox F1 Central Heating Inhibitor & Protector 500ml
( 163 )

£19.98

ex. VAT £16.65 Each

Product options Select from 2 options
Set Store

Out of stock for delivery

Fernox Fernox / Fernox F1 Central Heating Inhibitor & Protector Express 400ml
( 140 )

£20.48

ex. VAT £17.07 Each

Product options Select from 2 options
Set Store

Out of stock for delivery

ADEY ADEY / Adey MC1+ Central Heating Inhibitor 500ml
30% Off
( 18 )

£15.98 was £22.98

ex. VAT £13.32 Each

Product options Select from 1 option
Set Store

Out of stock for delivery

Corgi Controls Corgi Controls Corgi Controls / Corgi System Inhibitor 1L
20% Off
( 178 )

Product code: 38235

Corgi System Inhibitor 1L

£9.98 was £12.58

ex. VAT £8.32 Each

Product options Select from 1 option
Set Store

Out of stock for delivery

Corgi Controls Corgi Controls / Corgi System Inhibitor 500ml Concentrate
( 71 )

£7.68

ex. VAT £6.40 Each

Product options Select from 1 option
Set Store

Out of stock for delivery

ADEY ADEY / Adey MC1+ Central Heating Inhibitor Rapide 300ml
15% Off
( 13 )

£17.98 was £21.48

ex. VAT £14.98 Each

Product options Select from 1 option
Set Store

Out of stock for delivery

Sentinel Sentinel / Sentinel X100 System Inhibitor Rapid Dose 300ml
30% Off
( 45 )

£15.68 was £22.48

ex. VAT £13.07 Each

Product options Select from 1 option
Set Store

Out of stock for delivery

Sentinel Sentinel / Sentinel Eliminator Vortex250 Ultra-Compact Magnetic Filter Protection Pack 22mm Filter & 1 Litre Chemical Protection Pack
( 7 )

£119.98

ex. VAT £99.98 Each

Product options Select from 1 option
Set Store

Out of stock for delivery

Fernox Fernox Fernox / Fernox F1 Central Heating Inhibitor & Protector 265ml
50% Off
( 140 )

£5.00 was £10.28

ex. VAT £4.17 Each

Product options Select from 2 options
Set Store

Out of stock for delivery

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

£21.28

ex. VAT £17.73 Each

Set Store

Out of stock for delivery