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: 85485
T-BAR Expansion Vessel Fixing Bar Kit
£44.98
ex. VAT £37.48 Each
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Product code: 93426
Joule Invacyl Slimline Indirect Unvented Cylinder 180L
£703.98
ex. VAT £586.65 Each
Select from 4 variations
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Product code: 89200
4 Panel Cylinder Jacket 36 x 18"
£16.68
ex. VAT £13.90 Each
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Product code: 13300
Joule Invacyl Unvented Direct Cylinder 120L
£493.98
ex. VAT £411.65 Each
Select from 5 variations
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Product code: 57767
Joule Invacyl Slimline Direct Unvented Cylinder 150L
£604.98
ex. VAT £504.15 Each
Select from 5 variations
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Product code: 38630
Joule Invacyl Unvented Direct Cylinder 300L
£698.98
ex. VAT £582.48 Each
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Product code: 67700
Storage Tank Lid 4 Gallon
£4.18
ex. VAT £3.48 Each
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Product code: 72473
Expansion Vessel 25L
£39.98
ex. VAT £33.32 Each
Select from 3 variations
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Product code: 40149
Tesla Copper Immersion Heater & Resettable Thermostat 27"
£23.98
ex. VAT £19.98 Each
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Product code: 12829
Tesla Copper Immersion Heater & Resettable Thermostat 11"
£19.98
ex. VAT £16.65 Each
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Product code: 14121
Expansion Vessel Bracket 5 to 24L
£18.98
ex. VAT £15.82 Each
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Product code: 12098
Water Storage Tank LWH: 508 x 860 x 515mm 25 Gallon
£34.07
ex. VAT £28.39 Each
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Product code: 81978
Joule Invacyl Slimline Indirect Unvented Cylinder 210L
£704.98
ex. VAT £587.48 Each
Select from 4 variations
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Product code: 47335
Storage Tank Lid 25 Gallon
£19.57
ex. VAT £16.31 Each
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Product code: 40164
Byelaw 30 Kit
£10.48
ex. VAT £8.73 Each
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Product code: 48463
Tesla Expansion Vessel Service Valve
£15.68
ex. VAT £13.07 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: 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: 81659
RM Optimum Stainless Steel Indirect Unvented Hot Water Cylinder 900 x 545 120L
£669.98
ex. VAT £558.32 Each
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Product code: 28579
Joule Invacyl Unvented Indirect Cylinder 150L
£606.98
ex. VAT £505.82 Each
Select from 5 variations
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Product code: 80867
Joule Invacyl Unvented Direct Cylinder 250L
£647.98
ex. VAT £539.98 Each
Select from 5 variations
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Product code: 66596
Joule Invacyl Slimline Indirect Unvented Cylinder 120L
£675.98
ex. VAT £563.32 Each
Select from 4 variations
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Product code: 89481
Joule Invacyl Unvented Indirect Cylinder 120L
£581.98
ex. VAT £484.98 Each
Select from 5 variations
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Product code: 77506
Joule Invacyl Unvented Indirect Cylinder 300L
£749.98
ex. VAT £624.98 Each
Select from 5 variations
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