Torrent Greenheat OV Thermal Store
Torrent Greenheat SP Thermal Store
Torrent Greenheat SOL Thermal Store
Torrent Greenheat HP heat pump thermal store
Torrent Greenheat HP SOL thermal store

Indentify your Torrent Thermal Store

The Torrent Thermal Store has been around for a number of years and has undergone several developments in that time.

The following information may help you to identify your Torrent and, should you so need, help you select a replacement from the newest range. Simply click through the following to discover more....


TORRENT thermal stores by Gledhill - Older superseded models

Evolution of the Gledhill Torrent Thermal Store

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TORRENT and TORRENT RE thermal stores from Gledhill


The original TORRENT Thermal Store seen below has been superseded by the

TORRENT Multifuel Store.

All the advantages of the older unit with new features

For all the information please click here



The most exciting product development in the field of mains pressure hot water for years.

Thermal stores (otherwise known as Heat Stores) are fast becoming the preferred option in the field of mains pressure hot water to the complications and hazards of an unvented hot water cylinder.

Building Regulations in the United Kingdom state: Any vessel storing more than 15 litres of hot water under pressure is subject to section G3. This means virtually ALL unvented cylinders, but not so the TORRENT.

Because the bulk of water in the Torrent heat store is vented to atmosphere it presents no danger from explosion and is therefore exempt of regulation.

The water in a Torrent cylinder is used solely to store energy in the form of heat, nothing else. The clever part is what the cylinder does with its energy.

Torrent Cylinders are available in the following models -

  • TORRENT Indirect - a vented thermal store obtaining energy from a boiler. This model is ideally suited to the typical household offering the added benefit of easy upgrade to a mains pressure system during refurbishment. For more information choose from the options below.

  • TORRENT Direct - an electrically heated model with two immersion heaters. Typically used in conjunction with an economy tariff electricity supply. For more information choose from the options below.

  • TORRENT RE - An advanced vented thermal store providing mains pressure hot water with multiple input capability from SOLAR, WOOD BURNER, BOILER, GROUND SOURCE or AIR RECOVERY and AGA and the facility of running central heating directly from the store. CLICK for more on the RE Model

Torrent Thermal Store


Thermal Stores are simple to install overcoming the dangers, complicated installation and expense associated with unvented cylinders, yet they produce the very same thing - Mains Pressure Hot Water.

So easy to install, they are ideal for upgrading existing systems and meet the needs of the refurbishment market perfectly.

New generations of thermal store now facilitate an interface between multiple heat inputs, storing energy from different heat sources, providing mains pressure hot water and contributing to a household heating system.

A thermal store is the simple, safe way to provide mains pressure hot water to your taps. Suitable for numerous heat sources including Gas and Oil boilers, Wood burning stoves, heat recovery systems, AGA's  and fully electrical installations including Economy 7.

For more information select your model



for connection to a boiler (with optional immersion heater)

The Torrent Indirect is suitable for connection to a boiler and can be specified with (SP) or without (OV) a boiler heat exchanger. The cylinder is also supplied with tappings to accommodate heat inputs from a wood burner and/or AGA. Underfloor heating tappings are also available FOC upon request. An optional immersion heater completes the setup. Mains pressure hot water from multiple heat sources and an option to feed into your heating system.

Gledhill Torrent Indirect Thermal Store

More information....



Electrically heated only (ideal for use on an 'off-peak' tarriff)

The Torrent Direct is ideally suited to systems that do not have the benefit of a boiler with which to draw heat. Equipped with twin immersion heaters that can be configured for Economy tariffs, the cylinder can also take heat from sources including AGA, Wood burners and heat recovery systems. Supplied with separate F&E tank, the cylinder provides mains pressure hot water whilst remaining fully vented and has no special requirement for installation or annual servicing.

Gledhill Torrent Direct Thermal Store

More information....

So what is a Thermal Store?

A Thermal Store is a vessel which acts like a battery, but instead of storing electrical charge it stores heat. It is able to accumulate heat from numerous heat sources simultaneously. The beauty of a Thermal Store is the fact that the cylinder is not under pressure, it is always vented to atmosphere and therefore presents no danger (i.e. risk of explosion as with unvented cylinders).

A Thermal Store is able to produce mains pressure hot water by immersing a high efficiency heat exchanger in the hot water inside the cylinder. By passing mains pressure cold water through the heat exchanger it rapidly becomes hot water then emerges from the cylinder and speeds off to the outlet point hence - Mains pressure hot water from a vented cylinder! This is what makes a Thermal Store inherently safe.

The Torrent is available as an Indirect model (with or without a boiler coil) or a Direct model for use where electricity is the only or preferred energy source. The Torrent is also available in models that include heat exchangers for Solar input and others that maximise storage of energy from Heat Pumps and Air Recovery systems.


Open vented - highly insulated, efficient and most importantly - SAFE. Because the TORRENT does not store more than 15 litres of hot water under pressure it is exempt G3 Building Regs (UK) which means you do not need Building Regulations Approval to install one, certification by the installer or annual maintenance.

Easy to install - the TORRENT can be fitted simply into existing systems, including the existing boiler and controls, where appropriate. Can be fitted without specialist certification.

Does not require - expensive safety controls or temperature and pressure relief pipework to the outside of building.

No need - for external expansion vessels - and wiring is the same as any traditional Y, S or W plan system.

Long Life - the TORRENT is manufactured from copper sheet to BS2870. The computer designed heat exchangers are produced from finned tube and incorporate a patented expansion chamber which is sealed for life.

Economical to install - No specialist fitters required to install a Torrent. Inherently safe by nature you won't be needing to pay premium prices to your installer.

TORRENT Thermal Stores provide:
  • True mains pressure hot water
  • Deliver up to 25 litres per minute filling a normal bath in 3-4 minutes
  • Increased system efficiency, reducing running costs

Older models of the TORRENT thermal stores by Gledhill






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