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: 84070
RM Optimum Stainless Steel Indirect Unvented Hot Water Cylinder 1720 x 545 250L
£805.98
ex. VAT £671.65 Each
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Product code: 15936
RM Optimum Stainless Steel Indirect Unvented Hot Water Cylinder 1980 x 545 300L
£814.98
ex. VAT £679.15 Each
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Product code: 41594
Joule Invacyl Slimline Direct Unvented Cylinder 90L
£579.98
ex. VAT £483.32 Each
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Product code: 67812
Heatrae Sadia Megaflo Eco Indirect Cylinder 250L
£1865.98
ex. VAT £1554.98 Each
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Product code: 90455
Heatrae Sadia Megaflo Eco Direct Cylinder 125L
£949.98
ex. VAT £791.65 Each
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Product code: 21712
Heatrae Sadia Megaflo Eco Direct Cylinder 300L
£1449.98
ex. VAT £1208.32 Each
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Product code: 88711
Heatrae Sadia Megaflo Eco Direct Cylinder 145L
£1114.98
ex. VAT £929.15 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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Product code: 24405
Heatrae Sadia Megaflo Eco Indirect Cylinder 125L
£1048.98
ex. VAT £874.15 Each
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Product code: 78463
Heatrae Sadia Megaflo Eco Direct Cylinder 250L
£1398.98
ex. VAT £1165.82 Each
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Product code: 50787
RM Optimum Stainless Steel Indirect Unvented Hot Water Cylinder 1470 x 545 210L
£769.98
ex. VAT £641.65 Each
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Product code: 73635
Joule Invacyl Slimline Indirect Unvented Cylinder 90L
£663.98
ex. VAT £553.32 Each
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Product code: 57431
Heatrae Sadia Megaflo Eco Indirect Cylinder 170L
£1402.98
ex. VAT £1169.15 Each
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Product code: 57545
Heatrae Sadia Megaflo Eco Indirect Cylinder 145L
£1198.98
ex. VAT £999.15 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: 80867
Joule Invacyl Unvented Direct Cylinder 250L
£647.98
ex. VAT £539.98 Each
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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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For delivery only
Product code: 77506
Joule Invacyl Unvented Indirect Cylinder 300L
£749.98
ex. VAT £624.98 Each
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Product code: 85192
Joule Invacyl Unvented Indirect Cylinder 180L
£626.98
ex. VAT £522.48 Each
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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: 55265
Joule Invacyl Slimline Indirect Unvented Cylinder 150L
£690.98
ex. VAT £575.82 Each
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Product code: 98639
Heatrae Sadia Megaflo Eco Indirect Cylinder 300L
£1999.98
ex. VAT £1666.65 Each
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Product code: 18313
Joule Invacyl Slimline Direct Unvented Cylinder 210L
£645.98
ex. VAT £538.32 Each
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For delivery only
Product code: 35834
Heatrae Sadia Megaflo Eco Indirect Cylinder 210L
£1657.98
ex. VAT £1381.65 Each
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For delivery only