Cold Water Tanks

Find high-quality cold water storage tanks and accessories from trusted brands at Toolstation. Whether you need a loft tank, small water tank or 50-gallon cold water tank, we stock products in various sizes and configurations.

What Are Water Storage Tanks Used For?


Water storage tanks can be installed in your loft, supplying your central heating system with cold water to be heated and transported around your home as required. Usually, cold water storage tanks are found in older installations known as regular boilers, and these systems can take longer to heat. Combi boilers and system boilers do not rely on cold water storage.

The tank is filled via the mains water supply, storing it until hot water is required. A ball valve must be installed to prevent the tank from overflowing, whilst Byelaw 30 kits enable your storage tank to comply with the necessary safety requirements.

Tank jackets and cylinder jackets can be purchased to prevent your cold water tank from freezing during cold weather. Shop our full range of water storage tanks and related products here.
Ball Valve Pack
( 92 )

Product code: 18984

Ball Valve Pack

£15.58

ex. VAT £12.98 Each

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Water Storage Tank LWH: 442 x 296 x 305mm 4 Gallon
( 62 )

£10.28

ex. VAT £8.57 Each

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Water Tank Jacket 50 Gallon
( 73 )

Product code: 61470

Water Tank Jacket 50 Gallon

£22.38

ex. VAT £18.65 Each

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4 Panel Cylinder Jacket 36 x 18"
( 78 )

£16.68

ex. VAT £13.90 Each

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Water Storage Tank LWH: 508 x 860 x 515mm 25 Gallon
( 26 )

£34.07

ex. VAT £28.39 Each

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Byelaw 30 Tank Kit 4 Gallon
( 18 )

Product code: 37570

Byelaw 30 Tank Kit 4 Gallon

£24.98

ex. VAT £20.82 Each

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Storage Tank Lid 4 Gallon
( 36 )

Product code: 67700

Storage Tank Lid 4 Gallon

£4.18

ex. VAT £3.48 Each

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Byelaw 30 Kit
( 2 )

Product code: 40164

Byelaw 30 Kit

£10.48

ex. VAT £8.73 Each

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Storage Tank Lid 25 Gallon
( 6 )

Product code: 47335

Storage Tank Lid 25 Gallon

£19.57

ex. VAT £16.31 Each

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Water Tank Jacket 25 Gallon
( 17 )

Product code: 17512

Water Tank Jacket 25 Gallon

£13.18

ex. VAT £10.98 Each

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