Central Heating Accessories

Find high-quality central heating accessories at Toolstation, including filters, valves, thermostats, vents, filling loops, cleaning products, immersion heater covers and more. Shop from trusted brands like Tesla, Grundfos, Sentinel and Adey, and find products to help safeguard and maintain your central heating system.

Types of Central Heating Accessories



Installing a filter on your boiler will help prevent blockages caused by debris in the system. Magnetic filters are available for wet central heating systems, suitable for horizontal and vertical pipework.

Thermostats are commonly used with an immersion heater boiler to prevent the system from overheating, ensuring the safety of your home. Auto air vents bleed excess air from the central heating system, reducing noise, corrosion and maintenance costs.

Discover more central heating accessories when you shop our full range of products here.
Super Universal Thermocouple 900mm
( 41 )

£8.38

ex. VAT £6.98 Each

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Anti Vibration Circulating Pump Bracket 22mm
( 9 )

£1.98

ex. VAT £1.65 Each

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Air Vent 6mm (1/4")
( 8 )

Product code: 77151

Air Vent 6mm (1/4")

£2.08

ex. VAT £1.73 Each

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Aladdin Aladdin / Aladdin Auto Airvent Vent & Plug
( 10 )

£15.48

ex. VAT £12.90 Each

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Unbranded Unbranded / 22mm Automatic Bypass Valve Straight
( 9 )

£11.97

ex. VAT £9.97 Each

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Brass Blow-Off Cap & Collar 15/22mm
( 4 )

£6.58

ex. VAT £5.48 Each

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Grundfos Grundfos / Grundfos York Flange Deflector AS010 22mm
( 1 )

£55.98

ex. VAT £46.65 Each

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Air Vent Cap Capillary 15mm
20% Off
( 1 )

Product code: 45763

Air Vent Cap Capillary 15mm

£0.47 was £0.61

ex. VAT £0.39 Each

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Grundfos Grundfos / Grundfos Single Surrey Flange 15mm

£42.98

ex. VAT £35.82 Each

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22mm Automatic Bypass Valve Angled
( 10 )

£12.07

ex. VAT £10.06 Each

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Essex Flange 15mm
( 7 )

Product code: 70202

Essex Flange 15mm

£29.18

ex. VAT £24.32 Each

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Sentinel Sentinel / Sentinel Eliminator Vortex250 Ultra-Compact Magnetic Filter Protection Pack 22mm Filter Only
( 2 )

£83.98

ex. VAT £69.98 Each

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Sentinel Sentinel / Sentinel Eliminator Vortex500 Filter GRP 22mm Valves
( 2 )

£118.98

ex. VAT £99.15 Each

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Sentinel Sentinel / Sentinel InstaCheck Test Kit Refill Bundle

£122.68

ex. VAT £102.23 Each

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Anti Vibration Circulating Pump Bracket 28mm
( 1 )

£2.24

ex. VAT £1.87 Each

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Sentinel Sentinel / Sentinel InstaCheck Test Kit Inhibitor Refill 50 Strips

£99.98

ex. VAT £83.32 Each

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Fernox Fernox / Fernox F3 Central Heating Cleaner Express 400ml
( 9 )

£26.48

ex. VAT £22.07 Each

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Sentinel Sentinel / Sentinel InstaCheck Test Kit

Product code: 82764

Sentinel InstaCheck Test Kit

£169.48

ex. VAT £141.23 Each

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Sentinel Sentinel / Sentinel InstaCheck Test Kit Water Quality Refill 50 Strips

£39.78

ex. VAT £33.15 Each

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Grundfos Grundfos / Grundfos Single Surrey Flange 22mm

£45.98

ex. VAT £38.32 Each

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