For sales & advice call 01386 800751
Menu
Track Order
0 Basket
Free Standard Delivery
Next day & select-a-day options
30-Day Returns
Returns made easy
Lowest Price Guaranteed
Big brands. Small prices

Unvented Cylinders

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.

 
 

Filter By
372 results

Brand

Gledhill(59)

Electric Heating Company(52)

Megaflo(52)

Joule(52)

Baxi(46)

Telford(37)

UK Cylinders(31)

Warmflow(16)

Main(12)

Vaillant(10)

Stuart Turner(5)

View More

Range

Aquastor Amega(5)

Stainless Lite Plus(32)

300d(1)

250i(1)

210i(1)

210d(1)

170i(1)

170d(1)

145i(1)

145d(1)

125i(1)

125d(1)

Warmflow(4)

uniSTOR(10)

Ultimate All-In-One(14)

Tempest(37)

Pro(4)

ASHP(4)

Platinum(10)

Nero(12)

Neptune(24)

Megaflo Solar PV(6)

Megaflo Eco(45)

Megaflo(1)

Main(12)

Invacyl(23)

ES(13)

Elite Cyl(23)

Elite Air(8)

Cyclone(29)

Basic All-In-One(14)

Assure(31)

300i(1)

View More

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.

Heat Pump Cylinder(7)

Pre-Plumbed Cylinder(4)

Unvented Cylinder(361)

Indirect/Direct

Indirect(232)

Direct(130)

Other(10)

Capacity (Litres)

10-99(20)

100-199(158)

200-299(133)

300-399(54)

400-499(5)

500-599(2)

View More

Connection Size (mm)

1.25(5)

1.75(17)

2.5(84)

22(105)

28(8)

Other(153)

View More

Category

Cylinders

Heat Pump Cylinders

Price

£
to

£390-£740(109)

£740-£910(53)

£910-£1080(49)

£1080-£1430(70)

£1430-£5910(91)

Height (mm)

Other(31)

500-599(8)

600-699(5)

700-799(12)

800-899(9)

900-999(17)

1000-1099(17)

1100-1199(35)

1200-1299(29)

1300-1399(25)

1400-1499(43)

1500-1599(21)

1600-1699(10)

1700-1799(48)

1800-1899(13)

1900-1999(19)

2000-2099(30)

View More

Diameter (mm)

Other(28)

400-499(46)

500-599(268)

600-699(22)

700-799(7)

800-899(1)

View More

Cylinder Material

Stainless Steel(358)

High grade duplex stainless steel(13)

Other(1)

Orientation

Vertical(343)

Horizontal(19)

Other(10)

Guarantee (Years)

Lifetime(9)

2(10)

10(20)

15(11)

25(266)

30(28)

Other(28)

View More

Stock Status

In Stock Only(259)


Filter By
372 results

Brand

Gledhill(59)

Electric Heating Company(52)

Megaflo(52)

Joule(52)

Baxi(46)

Telford(37)

UK Cylinders(31)

Warmflow(16)

Main(12)

Vaillant(10)

Stuart Turner(5)

View More

Range

Aquastor Amega(5)

Stainless Lite Plus(32)

300d(1)

250i(1)

210i(1)

210d(1)

170i(1)

170d(1)

145i(1)

145d(1)

125i(1)

125d(1)

Warmflow(4)

uniSTOR(10)

Ultimate All-In-One(14)

Tempest(37)

Pro(4)

ASHP(4)

Platinum(10)

Nero(12)

Neptune(24)

Megaflo Solar PV(6)

Megaflo Eco(45)

Megaflo(1)

Main(12)

Invacyl(23)

ES(13)

Elite Cyl(23)

Elite Air(8)

Cyclone(29)

Basic All-In-One(14)

Assure(31)

300i(1)

View More

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.

Heat Pump Cylinder(7)

Pre-Plumbed Cylinder(4)

Unvented Cylinder(361)

Indirect/Direct

Indirect(232)

Direct(130)

Other(10)

Capacity (Litres)

10-99(20)

100-199(158)

200-299(133)

300-399(54)

400-499(5)

500-599(2)

View More

Connection Size (mm)

1.25(5)

1.75(17)

2.5(84)

22(105)

28(8)

Other(153)

View More

Category

Cylinders

Heat Pump Cylinders

Price

£
to

£390-£740(109)

£740-£910(53)

£910-£1080(49)

£1080-£1430(70)

£1430-£5910(91)

Height (mm)

Other(31)

500-599(8)

600-699(5)

700-799(12)

800-899(9)

900-999(17)

1000-1099(17)

1100-1199(35)

1200-1299(29)

1300-1399(25)

1400-1499(43)

1500-1599(21)

1600-1699(10)

1700-1799(48)

1800-1899(13)

1900-1999(19)

2000-2099(30)

View More

Diameter (mm)

Other(28)

400-499(46)

500-599(268)

600-699(22)

700-799(7)

800-899(1)

View More

Cylinder Material

Stainless Steel(358)

High grade duplex stainless steel(13)

Other(1)

Orientation

Vertical(343)

Horizontal(19)

Other(10)

Guarantee (Years)

Lifetime(9)

2(10)

10(20)

15(11)

25(266)

30(28)

Other(28)

View More

Stock Status

In Stock Only(259)


Filter Results
372 results
heatrae-sadia-megaflo-eco-250i-2-indirect-unvented-cylinder

Heatrae Sadia Megaflo Eco 250i 2 Indirect Unvented Cylinder - 7817129

Megaflo
£1,484.06 inc
VAT
Save £264.94 | Was £1,749.00
✓ 28 In Stock
heatrae-sadia-megaflo-eco-300i-2-indirect-unvented-cylinder

Heatrae Sadia Megaflo Eco 300i 2 Indirect Unvented Cylinder - 7817130

Megaflo
£1,909.99 inc
VAT
✓ 10 In Stock
joule-invacyl-unvented-210l-indirect-cylinder-standard-trbmvi-0210lfc

Joule Invacyl Unvented 210L Indirect Cylinder Standard - TRBMVI-0210LFC

Joule
£536.95 inc
VAT
Save £89.76 | Was £626.71
✓ In Stock
vaillant-unistor-200l-standard-indirect-unvented-hot-water-cylinder

Vaillant uniSTOR 200l Standard Indirect Unvented Hot Water Cylinder - 0020235268

Vaillant
£1,214.42 inc
VAT
✓ In Stock
joule-cyclone-platinum-unvented-300l-indirect-tall-cylinder

Joule Cyclone Platinum Unvented 300L Indirect Tall Cylinder - TCEMVI-0300LFD

Joule
£843.73 inc
VAT
Save £77.87 | Was £921.60
✓ In Stock
joule-invacyl-unvented-250l-indirect-cylinder-standard-trbmvi-0250lfc

Joule Invacyl Unvented 250L Indirect Cylinder Standard - TRBMVI-0250LFC

Joule
£593.00 inc
VAT
✓ In Stock
joule-cyclone-platinum-unvented-300l-indirect-short-cylinder

Joule Cyclone Platinum Unvented 300L Indirect Short Cylinder - TCEMVI-0300NFC

Joule
£774.29 inc
VAT
Save £47.12 | Was £821.41
✓ In Stock
joule-invacyl-unvented-300l-direct-cylinder-standard-stainless-steel-trbmvd-0300lfc

Joule Invacyl Unvented 300L Direct Cylinder Standard Stainless Steel - TRBMVD-0300LFC

Joule
£629.95 inc
VAT
Save £53.68 | Was £683.63
✓ In Stock
heatrae-sadia-megaflo-eco-systemready-300l-indirect-unvented-cylinder

Heatrae Sadia Megaflo Eco SystemReady 300L Indirect Unvented Cylinder - 95050502

Megaflo
£2,219.40 inc
VAT
Save £125.53 | Was £2,344.93
✓ In Stock
joule-cyclone-platinum-unvented-250l-indirect-standard-cylinder

Joule Cyclone Platinum Unvented 250L Indirect Standard Cylinder - TCEMVI-0250LFC

Joule
£695.54 inc
VAT
✓ In Stock
heatrae-sadia-megaflo-eco-plus-indirect-300l-unvented-cylinder

Heatrae Sadia Megaflo Eco Plus Indirect 300L Unvented Cylinder - 95050711

Megaflo
£1,987.20 inc
VAT
✓ 13 In Stock
heatrae-sadia-megaflo-eco-systemready-250l-indirect-unvented-cylinder

Heatrae Sadia Megaflo Eco SystemReady 250L Indirect Unvented Cylinder - 95050501

Megaflo
£2,038.48 inc
VAT
Save £350.89 | Was £2,389.37
✓ 6 In Stock
joule-cyclone-platinum-unvented-250l-indirect-short-cylinder

Joule Cyclone Platinum Unvented 250L Indirect Short Cylinder - TCEMVI-0250NFC

Joule
£693.75 inc
VAT
✓ In Stock
joule-cyclone-unvented-200l-indirect-standard-cylinder

Joule Cyclone Unvented 200L Indirect Standard Cylinder - TCEMVI-0200LFC

Joule
£629.94 inc
VAT
✓ In Stock
heatrae-sadia-megaflo-eco-210i-2-indirect-unvented-cylinder

Heatrae Sadia Megaflo Eco 210i 2 Indirect Unvented Cylinder - 7817128

Megaflo
£1,438.80 inc
VAT
✓ 25 In Stock
gledhill-direct-stainless-120l-unvented-cylinder

Gledhill ES Direct Stainless 120L Unvented Cylinder - SESINPDR120

Gledhill
£422.29 inc
VAT
Save £29.22 | Was £451.51
✓ In Stock
vaillant-unistor-300l-standard-indirect-unvented-hot-water-cylinder

Vaillant uniSTOR 300l Standard Indirect Unvented Hot Water Cylinder - 0020235270

Vaillant
£1,377.26 inc
VAT
Save £71.73 | Was £1,448.99
✓ In Stock
heatrae-sadia-megaflo-eco-210dd-direct-unvented-hot-water-cylinder

Heatrae Sadia Megaflo Eco 210DD Direct Unvented Hot Water Cylinder - 95050468

Megaflo
£1,284.00 inc
VAT
✓ 14 In Stock
joule-cyclone-platinum-unvented-500l-indirect-standard-cylinder

Joule Cyclone Platinum Unvented 500L Indirect Standard Cylinder - TCEMVI-0500LFC

Joule
£1,530.94 inc
VAT
Save £245.06 | Was £1,776.00
✓ In Stock
gledhill-direct-stainless-150l-unvented-cylinder

Gledhill ES Direct Stainless 150L Unvented Cylinder - SESINPDR150

Gledhill
£431.14 inc
VAT
Save £42.30 | Was £473.44
✓ In Stock
uk-cylinders-elite-cyl-horizontal-indirect-unvented-hot-water-cylinder-250l-eshoi0250

UK Cylinders Elite Cyl Horizontal Indirect Unvented Hot Water Cylinder 250L - ESHOI0250

More Options Available
UK Cylinders
£1,194.23 inc
VAT
✓ In Stock
discount-indirect-stainless-200l-unvented-cylinder

Gledhill ES Indirect Stainless 200L Unvented Cylinder - SESINPIN200

Gledhill
£600.27 inc
VAT
Save £31.66 | Was £631.93
✓ In Stock
discount-indirect-stainless-250l-unvented-cylinder

Gledhill ES Indirect Stainless 250L Unvented Cylinder - SESINPIN250

Gledhill
£623.40 inc
VAT
Save £98.63 | Was £722.03
✓ In Stock
joule-cyclone-unvented-170l-indirect-standard-cylinder

Joule Cyclone Unvented 170L Indirect Standard Cylinder - TCEMVI-0170LFB

Joule
£590.55 inc
VAT
✓ In Stock
heatrae-sadia-megaflo-eco-300dddd-direct-unvented-hot-water-cylinder-95050478

Heatrae Sadia Megaflo Eco 300DDDD Direct Unvented Hot Water Cylinder - 95050478

Megaflo
£1,788.00 inc
VAT
✓ 5 In Stock
gledhill-stainless-lite-plus-horizontal-unvented-indirect-cylinder-300-litre

Gledhill Stainless Lite Plus Horizontal Unvented Indirect Cylinder 300 Litre - PLUIN300H

Gledhill
£1,378.49 inc
VAT
Save £295.37 | Was £1,673.86
✓ In Stock
joule-invacyl-unvented-180l-indirect-cylinder-standard-trbmvi-0180lfb

Joule Invacyl Unvented 180L Indirect Cylinder Standard-TRBMVI-0180LFB

Joule
£519.00 inc
VAT
Save £69.91 | Was £588.91
✓ In Stock
main-indirect-unvented-300l-hot-water-cylinder

Main Indirect Unvented 300L Hot Water Cylinder - 5135328

Main
£990.00 inc
VAT
✓ 12 In Stock
heatrae-sadia-megaflo-eco-170i-2-indirect-unvented-cylinder

Heatrae Sadia Megaflo Eco 170i 2 Indirect Unvented Cylinder - 7817127

Megaflo
£1,294.80 inc
VAT
Save £185.20 | Was £1,480.00
✓ 13 In Stock
joule-cyclone-platinum-unvented-125l-direct-standard-cylinder

Joule Cyclone Platinum Unvented 125L Direct Standard Cylinder - TCEMVD-0125LFD

Joule
£500.63 inc
VAT
✓ In Stock
joule-invacyl-unvented-150l-indirect-cylinder-standard-trbmvi-0150lfb

Joule Invacyl Unvented 150L Indirect Cylinder Standard-TRBMVI-0150LFB

Joule
£495.82 inc
VAT
Save £71.78 | Was £567.60
✓ In Stock
vaillant-unistor-250l-standard-indirect-unvented-hot-water-cylinder

Vaillant uniSTOR 250l Standard Indirect Unvented Hot Water Cylinder - 0020235269

Vaillant
£1,298.50 inc
VAT
✓ 6 In Stock
heatrae-sadia-megaflo-eco-250dd-direct-unvented-hot-water-cylinder

Heatrae Sadia Megaflo Eco 250DD Direct Unvented Hot Water Cylinder - 95050470

Megaflo
£1,388.40 inc
VAT
✓ 6 In Stock
1 2 … 11 12