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The unvented hot water cylinder is a firm favourite among homeowners who possess a pressurised central heating system. Supplied with either an external or built-in expansion vessel, an unvented cylinder is particularly desirable as hot water is delivered under pressure and does not require a cumbersome gravity-fed water tank. New unvented hot water cylinders can handle your hot water pressure demands quickly and safely while offering manufacturer's warranties of up to 25 years. Please choose from our extensive range of unvented cylinders from all the leading brands today.

 
 

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Cylinder Type

Vented: Stores and heats water that is fed directly from a tank in the loft.

Unvented: Provides mains pressure hot water directly from the cold mains.

Direct: Heats water directly using an immersion heater or the heat from a boiler.

Indirect: Relies on a separate heat exchanger to transfer heat from the boiler or another heat source to the water.

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395 results

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Cylinder Type

Vented: Stores and heats water that is fed directly from a tank in the loft.

Unvented: Provides mains pressure hot water directly from the cold mains.

Direct: Heats water directly using an immersion heater or the heat from a boiler.

Indirect: Relies on a separate heat exchanger to transfer heat from the boiler or another heat source to the water.

Stock Status


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395 results
heatrae-sadia-megaflo-eco-145l-erp-systemfit-cylinder

Heatrae Sadia Megaflo Eco 145L ErP SystemFit Cylinder - 95050451

£2,218.22 inc
VAT
heatrae-sadia-megaflo-eco-125l-erp-systemfit-cylinder

Heatrae Sadia Megaflo Eco 125L ErP SystemFit Cylinder - 95050450

£1,997.99 inc
VAT
heatrae-sadia-megaflo-eco-300l-erp-systemfit-cylinder

Heatrae Sadia Megaflo Eco 300L ErP SystemFit Cylinder - 95050455

£3,074.88 inc
VAT
vaillant-unistor-300l-pre-plumbed-unvented-indirect-cylinder

Vaillant uniSTOR 300L Pre-Plumbed Unvented Indirect Cylinder - 0010019214

£1,857.54 inc
VAT
vaillant-unistor-180l-pre-plumbed-unvented-indirect-cylinder

Vaillant uniSTOR 180L Pre-Plumbed Unvented Indirect Cylinder - 0010019211

£1,669.99 inc
VAT
vaillant-unistor-250l-pre-plumbed-unvented-indirect-cylinder

Vaillant uniSTOR 250L Pre-Plumbed Unvented Indirect Cylinder - 0010019213

£1,726.07 inc
VAT
gledhill-stainless-lite-plus-horizontal-unvented-indirect-cylinder-210-litre

Gledhill Stainless Lite Plus Horizontal Unvented Indirect Cylinder 210 Litre - PLUIN210H

£1,197.00 inc
VAT
Save £191.10 | Was £1,388.10
gledhill-stainless-lite-plus-horizontal-unvented-indirect-cylinder-250-litre

Gledhill Stainless Lite Plus Horizontal Unvented Indirect Cylinder 250 Litre - PLUIN250H

£1,261.81 inc
VAT
Save £287.40 | Was £1,549.21
gledhill-stainless-lite-plus-horizontal-unvented-indirect-cylinder-180-litre

Gledhill Stainless Lite Plus Horizontal Unvented Indirect Cylinder 180 Litre - PLUIN180H

£1,127.27 inc
VAT
Save £141.72 | Was £1,268.99
ehc-neptune-solar-210l-direct-unvented-cylinder

EHC Neptune Solar 210L Direct Unvented Cylinder - NSDIR210L

£1,162.34 inc
VAT
ehc-neptune-solar-250l-direct-unvented-cylinder

EHC Neptune Solar 250L Direct Unvented Cylinder - NSDIR250L

£1,227.82 inc
VAT
ehc-neptune-solar-300l-direct-unvented-cylinder

EHC Neptune Solar 300L Direct Unvented Cylinder - NSDIR300L

£1,335.43 inc
VAT
ehc-neptune-solar-250l-indirect-unvented-cylinder

EHC Neptune Solar 250L Indirect Unvented Cylinder

£1,423.26 inc
VAT
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