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: 40149
Tesla Copper Immersion Heater & Resettable Thermostat 27"
£25.66
ex. VAT £21.38 Each
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6 available for delivery
Product code: 41594
Joule Invacyl Slimline Direct Unvented Cylinder 90L
£579.98
ex. VAT £483.32 Each
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For delivery only
Product code: 66596
Joule Invacyl Slimline Indirect Unvented Cylinder 120L
£675.98
ex. VAT £563.32 Each
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For delivery only
Product code: 80867
Joule Invacyl Unvented Direct Cylinder 250L
£647.98
ex. VAT £539.98 Each
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For delivery only
Product code: 21712
Heatrae Sadia Megaflo Eco Direct Cylinder 300L
£1538.34
ex. VAT £1281.95 Each
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For delivery only
Product code: 57431
Heatrae Sadia Megaflo Eco Indirect Cylinder 170L
£1520.69
ex. VAT £1267.24 Each
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For delivery only
Product code: 54595
Heatrae Sadia Megaflo Eco Direct Cylinder 70L
£869.43
ex. VAT £724.52 Each
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For delivery only
Product code: 90334
Joule Invacyl Slimline Direct Unvented Cylinder 60L
£569.98
ex. VAT £474.98 Each
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For delivery only
Product code: 78838
Heatrae Sadia Megaflo Eco Direct Cylinder 210L
£1256.20
ex. VAT £1046.83 Each
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For delivery only
Product code: 90455
Heatrae Sadia Megaflo Eco Direct Cylinder 125L
£1007.87
ex. VAT £839.89 Each
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For delivery only
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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For delivery only
Product code: 72473
Expansion Vessel 25L
£44.26
ex. VAT £36.88 Each
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Out of stock for delivery
Product code: 88711
Heatrae Sadia Megaflo Eco Direct Cylinder 145L
£1089.73
ex. VAT £908.11 Each
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For delivery only
Product code: 12489
Heatrae Sadia Megaflo Eco Direct Cylinder 170L
£1272.07
ex. VAT £1060.06 Each
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For delivery only
Product code: 24405
Heatrae Sadia Megaflo Eco Indirect Cylinder 125L
£1164.28
ex. VAT £970.23 Each
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For delivery only
Product code: 63006
RM Optimum Stainless Steel Direct Unvented Hot Water Cylinder 1980 x 545 300L
£692.98
ex. VAT £577.48 Each
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For delivery only
Product code: 57545
Heatrae Sadia Megaflo Eco Indirect Cylinder 145L
£1293.87
ex. VAT £1078.22 Each
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For delivery only
Product code: 73635
Joule Invacyl Slimline Indirect Unvented Cylinder 90L
£663.98
ex. VAT £553.32 Each
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For delivery only
Product code: 55265
Joule Invacyl Slimline Indirect Unvented Cylinder 150L
£690.98
ex. VAT £575.82 Each
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For delivery only
Product code: 64909
Joule Invacyl Slimline Direct Unvented Cylinder 180L
£609.98
ex. VAT £508.32 Each
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For delivery only
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: 19925
RM Optimum Stainless Steel Direct Unvented Hot Water Cylinder 1280 x 545 180L
£599.98
ex. VAT £499.98 Each
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For delivery only