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Unvented Mains Pressure Cylinders

Known for superb longevity and durability, stainless steel is the material of choice for modern hot water cylinders. We list unvented hot water cylinders from all the big brands including Warmflow, Telford, Joule, Ariston and Heatrae Sadia.

The most common type of unvented cylinder is indirectly heated by a boiler, with direct models heated by immersions. Solar models have the addition of a solar coil. Often commonly called a Megaflo, most unvented stainless steel cylinders contain the same parts as the Heatrae Sadia model, but are available at a far better price. We advise customers not to pay over the odds for their hot water cylinder!

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1 - 36 Of 163 Products
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£279.95
GHSESINPDR090
In Stock
3 Days
Finance from £23.33/month
More Options
£329.95
GHSESINPDR120
In Stock
3 Days
Finance from £27.50/month
More Options
£355.95
GHSESINPDR150
In Stock
3 Days
Finance from £29.66/month
More Options
£373.95
GHSESINPDR170
In Stock
3 Days
Finance from £31.16/month
More Options
£398.95
GHSESINPDR200
In Stock
3 Days
Finance from £33.25/month
More Options
£403.95
GHSESINPIN090
In Stock
3 Days
Finance from £33.66/month
More Options
£410.95
GHSESINPIN120
In Stock
3 Days
Finance from £34.25/month
Ariston Pro1 Eco Wall Hung Unvented Electric Storage Water Heater - 50 Litres
Special Offer
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£414.95 RRP £750.00
ARIS3820019
Stock Due In : 21/01/2021
Finance from £34.58/month
Warmflow DIRECT Unvented Stainless Steel Hot Water Cylinder 90 LITRE
SAVE 30%
£434.95 RRP £624.00
WFDI90UV
In Stock
3 Days
Finance from £36.25/month
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£434.95
GHSESINPDR250
In Stock
3 Days
Finance from £36.25/month
More Options
£435.95
GHSESINPIN150
In Stock
3 Days
Finance from £36.33/month
Ariston Pro1 Eco Wall Hung Unvented Electric Storage Water Heater - 80 Litres
Special Offer
More Options
£445.95 RRP £804.00
ARIS3820020
In Stock
3 Days
Finance from £37.16/month
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£460.95
GHSESINPIN170
In Stock
3 Days
Finance from £38.41/month
Ariston Pro1 Eco Wall Hung Unvented Electric Storage Water Heater - 100 Litres
Special Offer
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£464.95 RRP £840.00
ARIS3820021
Stock Due In : 04/02/2021
Finance from £38.75/month
Warmflow DIRECT Unvented Stainless Steel Hot Water Cylinder 120 LITRE
SAVE 31%
£485.95 RRP £703.20
WFDI120UV
In Stock
3 Days
Finance from £40.50/month
More Options
£485.95
GHSESINPIN200
In Stock
3 Days
Finance from £40.50/month
Warmflow DIRECT Unvented Stainless Steel Hot Water Cylinder 150 LITRE
SAVE 31%
£511.95 RRP £741.60
WFDI150UV
In Stock
3 Days
Finance from £16.39/month
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£526.95
GHSESINPIN250
In Stock
3 Days
Finance from £16.87/month
£536.95
JD90
In Stock
3 Days
Finance from £17.20/month
Warmflow DIRECT Unvented Stainless Steel Hot Water Cylinder 180 LITRE
SAVE 31%
£539.95 RRP £781.20
WFDI180UV
In Stock
3 Days
Finance from £17.29/month
£543.95
JD125
In Stock
3 Days
Finance from £17.42/month
Warmflow DIRECT Unvented Stainless Steel Hot Water Cylinder 210 LITRE
SAVE 31%
£555.95 RRP £805.20
WFDI210UV
In Stock
3 Days
Finance from £17.80/month
£559.95
JD150
In Stock
3 Days
Finance from £17.93/month
£565.95
JD170
In Stock
3 Days
Finance from £18.12/month
Warmflow INDIRECT Unvented Stainless Steel Hot Water Cylinder 120 LITRE
SAVE 31%
£566.95 RRP £819.60
WFIN120UV
In Stock
3 Days
Finance from £18.16/month
More Options
£573.95
GHSESINPIN300
In Stock
3 Days
Finance from £18.38/month
Warmflow INDIRECT Unvented Stainless Steel Hot Water Cylinder 150 LITRE
SAVE 31%
£593.95 RRP £859.20
WFIN150UV
In Stock
3 Days
Finance from £19.02/month
Warmflow INDIRECT Unvented Stainless Steel Hot Water Cylinder 180 LITRE
SAVE 31%
£603.95 RRP £873.60
WFIN180UV
In Stock
3 Days
Finance from £19.34/month
Warmflow INDIRECT Unvented Stainless Steel Hot Water Cylinder 210 LITRE
SAVE 31%
£620.95 RRP £897.60
WFIN210UV
In Stock
3 Days
Finance from £19.89/month
£625.95
JD200
In Stock
3 Days
Finance from £20.05/month
£625.95
JD200S
In Stock
3 Days
Finance from £20.05/month
Warmflow DIRECT Unvented Stainless Steel Hot Water Cylinder 250 LITRE
SAVE 31%
£633.95 RRP £918.00
WFDI250UV
In Stock
3 Days
Finance from £20.30/month
£637.95
JI150
In Stock
3 Days
Finance from £20.43/month
£647.95
JI125
In Stock
3 Days
Finance from £20.75/month
£664.95
JI170
In Stock
3 Days
Finance from £21.29/month
Warmflow Eco DIRECT Unvented Stainless Steel Hot Water Cylinder 210 LITRE
SAVE 31%
£685.95 RRP £992.40
WFED210UV
In Stock
3 Days
Finance from £21.97/month

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