Expansion Tanks & Vessels
What is a Central Heating Expansion Tank Used For?
Central heating tanks are an essential component for most domestic systems, helping to maintain the correct pressure throughout the system. Expansion vessels work similarly to an overflow tank, allowing excess water or air to be stored as the system heats and cools.
All boilers are already fitted with an expansion tank, but they may need replacing if you frequently experience pressure loss, leaving you without heating or hot water. Browse our full selection of central heating expansion tanks here and find high-quality replacement parts.
Product code: 69275
RM Optimum Stainless Steel Direct Unvented Hot Water Cylinder 1100 x 545 150L
£549.98
ex. VAT £458.32 Each
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Product code: 77506
Joule Invacyl Unvented Indirect Cylinder 300L
£749.98
ex. VAT £624.98 Each
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Product code: 64909
Joule Invacyl Slimline Direct Unvented Cylinder 180L
£609.98
ex. VAT £508.32 Each
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Product code: 17512
Water Tank Jacket 25 Gallon
£13.18
ex. VAT £10.98 Each
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Out of stock for delivery
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Product code: 80462
RM Optimum Stainless Steel Direct Unvented Hot Water Cylinder 900 x 545 120L
£540.98
ex. VAT £450.82 Each
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Product code: 51742
Joule Invacyl Unvented Indirect Cylinder 210L
£647.98
ex. VAT £539.98 Each
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Product code: 80867
Joule Invacyl Unvented Direct Cylinder 250L
£647.98
ex. VAT £539.98 Each
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Product code: 28579
Joule Invacyl Unvented Indirect Cylinder 150L
£606.98
ex. VAT £505.82 Each
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Product code: 30686
Joule Invacyl Unvented Indirect Cylinder 250L
£699.98
ex. VAT £583.32 Each
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Product code: 96498
Joule Invacyl Unvented Direct Cylinder 180L
£534.98
ex. VAT £445.82 Each
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Product code: 17800
RM Optimum Stainless Steel Direct Unvented Hot Water Cylinder 1470 x 545 210L
£614.98
ex. VAT £512.48 Each
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Product code: 89481
Joule Invacyl Unvented Indirect Cylinder 120L
£581.98
ex. VAT £484.98 Each
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