Unvented Cylinders

Set Descending Direction 170 items
  • Joule Cyclone Air 125L Indirect Standard Unvented Cylinder
  • OSO Super Coil Series
  • OSO Super Coil Series
  • Heatrae Sadia Megaflo Eco Unvented Slimline Direct  150DD
  • OSO Super Coil Series
  • Joule Cyclone Air 250L Direct Standard Unvented Cylinder
  • Joule Cyclone Air 150L Indirect Standard Unvented Cylinder
  • Baxi Assure 250DDD Direct Unvented Hot Water Cylinder 7737172
    Sku: EDDBAXI250DDD
    £1,177.34 £981.12
  • Joule Cyclone Air 170L Indirect Standard Unvented Cylinder
  • Direct Megaflo 170DD
  • OSO Hotwater SXD210 SUPER XPRESS DIRECT VIP SX210 Unvented Cylinder 210L 10802664
  • Joule Indirect Cyclone Hot Water Cylinder
    Sku: EDDJOULEIDS205L
    £1,198.80 £999.00
  • Joule Cyclone Air 200L Indirect Standard Unvented Cylinder
  • Heatrae Sadia Megaflo Eco 145i Indirect Unvented Hot Water Cylinder
    Sku: EDDSADIA77
    £1,203.60 £1,003.00
  • Baxi Assure 210i Indirect Unvented Hot Water Cylinder 7737262
    Sku: EDDBAXI210I
    £1,204.85 £1,004.04
  • EHC Neptune 250L Indirect Unvented Cylinder
    Sku: EDDEHC250I
    £1,224.56 £1,020.47
  • Baxi Assure 300DDD Direct Unvented Hot Water Cylinder 7737176
    Sku: EDDBAXI300DDD
    £1,232.35 £1,026.96
  • Baxi Assure 170i Indirect Unvented Hot Water Cylinder 7737261
    Sku: EDDBAXI170I
    £1,256.95 £1,047.46
  • Heatrae Sadia Megaflo Eco Unvented Slimline Indirect 125i
  • Joule Cyclone Air 250L Indirect Standard Unvented Cylinder
    Sku: EDDJAIR13
    £1,270.80 £1,059.00
  • Joule Cyclone Air 300L Direct Standard Unvented Cylinder
    Sku: EDDJAIR07
    £1,272.00 £1,060.00
  • OSO Hotwater SUPER COIL SC210 Indirect Unvented Cylinder 210L 10802954
    Sku: EDDOSOSC210
    £1,278.00 £1,065.00
  • Heatrae Sadia Megaflo Eco 170i Indirect Unvented Hot Water Cylinder
  • Heatrae Sadia Megaflo Eco 210DD Direct Unvented Hot Water Cylinder

Explore our selection of unvented water cylinders, designed to provide high-pressure hot water for homes and commercial properties. Unlike traditional vented systems, unvented cylinders operate without the need for a cold water tank, offering greater efficiency and more consistent water flow. These systems are ideal for properties with multiple bathrooms, large households, or high-demand commercial settings where a steady, reliable supply of hot water is essential. With advanced insulation and energy-efficient designs, our unvented water cylinders offer the perfect combination of performance, convenience, and cost savings. Browse our range to find the perfect solution for your hot water needs.

Unvented Cylinders


A cylinder stores hot water ready for use. A Direct cylinder heats the water using the electrical elements within the cylinder itself, whereas an Indirect cylinder stores water heated by another heat source (most commonly, a gas boiler). Usually, these cylinders are fed directly from the mains, and so run at mains pressure, and can therefore be sited anywhere in the house. They range in size from 70 Litres, with 22mm pipework designed to power small apartments or flats, all the way up to 1000 Litre solutions, at 28mm pipework, designed to cater for heavy use commercial premises such as hospitals, office blocks, schools or leisure centres.

Unvented Cylinders are the go-to solution for those looking for mains pressure hot water flow at various times of the day, which is achieved as the Cylinder utilises the cold water mains in the system to mirror pressure for hot water needs. Cylinders save time compared to older immersion stores, allowing users instant access to hot water, perfect for ebbing and flowing use periods. All the Unvented Cylinders we distribute come with high-quality stainless steel tanks and components, and feature modern electric immersion heaters inside, perfect for future-proofing a property as Gas power is slowly phased out across the next decade and onwards, so switching to one of these is both doing your part for the environment and ensuring future proofing for anyone looking to sell or manoeuvre within the property ladder.

Check out the "Help Me Choose My" feature linked in the image below to help you find your ideal-sized Cylinder, or browse the full range on offer below.


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