Joule’s industry leading cylinders are built on quality and performance, with one of the widest ranges of models available you can be sure there is a model to suit. Not sure which unit you need? See our handy range descriptions below or call us for some straight forward advice:

Cyclone Indirect Cylinder:
For use when an external heat source (such as a boiler) is providing the heat for the cylinder.
Cyclone Direct:
Direct hot water cylinders use heat sources that are physically located within the cylinder itself similar to an immersion heater, to heat the water. These direct cylinders are particularly located in either flats or apartments where there is no access to gas & are supplied with 3kw Incoloy immersions fitted as standard.
High Gain Indirect:
For Heat Pump ready cylinders our coil quality sets us apart. Cyclone High Gain range of hot water cylinders use high recovery smooth tube quick recovery coils for optimal performance.
Cyclone Air Direct:
A Direct cylinder with built in expansion, removing the need for an external expansion vessel.
Cyclone Air Indirect:
An Indirect cylinder with built in expansion, removing the need for an external expansion vessel.
Pre-Plumb Indirect:
Dramatically reducing installation time by including the heating zone controls and pumps pre fitted as part of the unit.
Direct Solar:
A direct cylinder capable of taking heat from your solar system.
High Gain Solar:
As per the high gain indirect, with the added facility to heat the cylinder with a solar system via a high recovery coil.
Twin Solar:
Designed to work with any solar system, the twin solar cylinders are manufactured with 9mm sensor pockets for the solar controller to ensure that the solar systems performs at its optimum level.
Slimline Indirect:
Indirect cylinders that have been designed for the use in tight areas where there is more height than width available
Slimline Direct:
Direct cylinders that have been designed for the use in tight areas where there is more height than width available
Thermal Store 2.0:
Ideal solution for multi energy applications. Domestic hot water is produced through the fresh water module mounted on the front of the cylinder, providing far superior flow rates compared to the internal coil version. The cylinder has a number of direct connections to allow for multiple heat source and zoning integration.
Horizontal Indirect:
For when only a horizontal cylinder will fit in the space available.

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