Keston Boilers

Keston domestic and light commercial boilers come with the Keston Twin Flue system, which allows you to run the flue vertically or horizontally up to 27 metres. This flexibility lets you site the boiler in the most convenient and practical location.

The Keston range includes both domestic and light commercial models each of which come complete with twin flue capability.

Keston boilers are offered with a warranty of up to 7 years as standard, ensuring the ultimate peace of mind for both you and your customer. The Keston range is made up of Combi, Heat only and System boilers, offering a solution for all applications. And all Keston boilers are made in Britain and have been since 2013.

Every model in the range offers a market leading solution for awkward and problematic installations, thanks to the twin flue capability.

You can also be assured that when choosing Keston you will be supported by a national customer service team, offering support 7 days a week.

Contact Details

Stephen Brownett-Gale +44 0870 8498056


Products at the Show

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Keston Heat
Heat Only boiler, 45kW & 55kW Output. Natural Gas & LPG Supported by a 7 year parts and labour warranty†, Keston Heat is a reliable and efficient wall hung solution. The quality of this product range has been developed through meticulous design, careful component selection and proving; leading to reliability and longevity. The range provides high efficiencies for low running costs with up to 110% part load, seasonal efficiency (ref Building Regs Part L2) up to 97%. The range also provides low NOx emissions at Class 5 and at less than 40mg/kWh achieves maximum points under BREEAM schemes. Keston Heat provides the perfect solution for a wide variety of commercial installations. Keston Heat boilers are easy to cascade using our Frame and Header kits.
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Keston Combi
Combi boiler, 30kW & 35kW Natural Gas (LPG conversion kits available). Offering first-class comfort in a compact, wall-hung appliance small enough to fit inside a standard kitchen cupboard, the Keston Combi range enables heating and hot water to be controlled independently, ensuring maximum comfort and efficiency. Keston Combi can be sited almost anywhere in the home, without the need for a separate tank. And because it connects to the unique Keston twin-flue system, the boiler can be situated anywhere up to 27 metres from the flue outlet, helping to provide further flexibility when required. Fully modulating, and with weather compensation, Keston Combi provides excellent energy savings, making it the perfect choice for new or replacement installations alike. Especially as it is Boiler Plus compliant out of the box and comes with a 7 year warranty.
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Keston System
System boiler, 30kW Output, Natural Gas (LPG conversion kit available). Keston System boiler provides a simple and reliable solution for a wide variety of sealed domestic systems. Keston System provides a dependable and efficient solution for new and replacement installations. Time saving push & clip flue spigot connections and a wide range of alternative flueing solutions help to ensure the product is installed quickly in virtually any domestic situation. With a lightweight design, concealed connections at the base and no compartment ventilation required, Keston System can be conveniently fitted out of sight into a standard kitchen cupboard. Complete with a 7 year parts and labour warranty, Keston System boiler provides simple heating control, all from a single compact appliance.