TDL Online supplies a full range of Gledhill hot water cylinders for domestic hot water storage. Choose from unvented mains pressure cylinders, traditional vented cylinders, high-performance thermal storage, and cylinders designed for renewable energy systems including solar thermal and heat pumps. Select a category below to browse available ranges, sizes and specifications.

WE WILL CONTACT YOU AFTER ORDER IS PLACED AND CONFIRM DELIVERY DATE.
MOST GLEDHILLS ARE DELIVERED WITHIN 5 WORKING DAYS
SOME SPECIAL SIZES CAN TAKE 10-15 DAYS 
PLEASE CHECK WITH YOUR INSTALLER THAT YOU ARE PURCHASING THE CORRECT CYLINDER YOU NEED FOR YOUR HOUSE
 INCORRECTLY ORDERED CYLINDER WILL INCUR A RESTOCKING CHARGE (25%) 
 DOUBLE CHECK THAT YOU ARE ORDERING THE CORRECT CYLINDER TO AVOID THESE CHARGES

Which Gledhill Cylinder Do I Need?

 Gledhill Unvented Cylinders

Stainless ES range, known for its robust stainless-steel construction, operates under mains pressure to provide powerful and consistent hot water delivery. Ideal for high-demand situations, these cylinders ensure that your home enjoys a continuous supply of hot water with exceptional performance. From Vertical to Horizontal and Slimline all size options can be catered for.

 Gledhill Thermal Storage

In the Thermal Storage category, the Pulsacoil stands out as a leading product, particularly suitable for flats and apartments where an overflow system is not feasible. These units are custom-made and boast a swift production time of just three weeks. Gledhill's thermal storage solutions are designed to meet the unique needs of modern living spaces, ensuring efficient and effective hot water management.

 Gledhill Vented Cylinders

Vented Cylinders by Gledhill represent a more traditional approach to hot water systems. Often used as replacements in older properties, these cylinders are typically located in the airing cupboard and operate using a pumped or gravity-fed system. While they hark back to older styles, Gledhill ensures that their vented cylinders are built to the highest standards, offering reliability and durability for homes that utilise this type of system.

 Gledhill Renewable Energy

Gledhill's Renewable Energy range is at the forefront of environmentally friendly hot water solutions. These cylinders are typically used in conjunction with heat pumps and feature larger coils to maximise efficiency. Commonly installed in new builds, these cylinders are an integral part of sustainable and energy-efficient home designs. They exemplify Gledhill's commitment to innovation and environmental responsibility in hot water technology.

Gledhill Hot Water Cylinder FAQ's

What types of Gledhill hot water cylinders are available

Gledhill cylinders generally fall into four main types: Unvented cylinders, Vented cylinders, Thermal storage systems, and Renewable energy cylinders designed for solar thermal or heat pump systems. The correct choice depends on your property’s water pressure and heating setup.

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Whats the difference between an unvented and a vented cylinder

  • An unvented cylinder delivers hot water at mains pressure, giving strong flow to taps and showers without needing a cold water storage tank.
  • A vented cylinder is a more traditional setup and typically works with a cold water tank/loft tank, supplying hot water via gravity.
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What does Direct and Indirect mean on a hot water cylinder

  • Direct cylinder: heats water using one or more electric immersion heaters (no boiler coil required).
  • Indirect cylinder: heats water through a coil connected to a boiler or heat source, often with an immersion heater as backup.

If you have a boiler system, you’ll usually need an indirect model.

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Which cylinder is best for mains pressure hot water

For mains pressure domestic hot water, you’ll typically want a Gledhill Unvented Cylinder. These are designed to deliver stronger shower performance and faster hot water delivery compared to gravity-fed systems.

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What is thermal storage and when is it a better choice

A thermal store heats a store of primary water and transfers heat to the domestic hot water through a heat exchanger. Gledhill thermal storage systems (such as PulsaCoil) are popular for flats and modern properties where strong hot water flow and fast recovery are important.

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