Unvented Hot Water Cylinders

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Vaillant uniSTOR 250 Unvented Hot Water Cylinder
£1,850.00

Unvented Hot Water Cylinders

Unvented hot water cylinders run directly off the mains, giving mains-pressure hot water to every tap and shower in the house – with no cold water tank in the loft and no shower pump. We stock unvented cylinders from Telford (Hurricane and Tempest ranges) and Vaillant (uniSTOR) at trade prices.

Choose the right unvented cylinder

  • Indirect unvented cylinders – heated by a gas or oil boiler through an internal coil, with an immersion heater as back-up.
  • Direct unvented cylinders – heated by immersion heaters, for homes without a boiler.
  • Slimline cylinders – narrower models for tight airing cupboards.
  • Horizontal cylinders – for lofts and eaves where there isn't the height for an upright cylinder.
  • Solar cylinders – twin-coil models for solar thermal panels.
  • Heat pump cylinders – large-coil cylinders designed for air source heat pumps, including pre-plumbed options.

Is an unvented cylinder right for my home?

Unvented cylinders need good mains water pressure and flow rate, so check yours before buying. By law, unvented cylinders must be installed by a G3-qualified installer and registered with building control.

How much is an unvented hot water cylinder?

Our mains pressure hot water cylinders start from around £546, with slimline models from around £580, horizontal models from around £906 and heat pump cylinders from around £1,265.

Contact us if you'd like help choosing a size.