Keston Gas Boilers

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Studios / Small Flats / Small Houses – With Water Storage

Keston System 30

The Keston System range of boilers provides a simple and reliable solution for a wide variety of sealed domestic systems. Available in 30kW, the 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, the Keston System can be conveniently fitted out of sight into a standard kitchen cupboard.

Complete with a 2 year parts and labour warranty, the Keston System boiler provides simple heating control, all from a single compact appliance.

Keston heat boiler

Large Homes 5-6 Bedroom / Small Commercial – With Water Storage

Keston Heat 55Kw

The Heat range offers a number of key features that enables ease of installation, maintenance and operation the Heat range is designed to ensure all installation requirements can be achieved.
The lightweight design is supported through quality build and aesthetics that allow for the boiler to be installed either on the wall or into a prefabricated floor mounted frame including back-to-back options.

Supported by a 2 year parts and labour warranty, the 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 and 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 achieve maximum points under BREEAM schemes.

Studios, Small Flats and Small Houses – No Water Storage

Keston Combi 30 – (30 & 35 kW)

Offering first-class comfort in a compact, wall-hung appliance small enough to fit inside a standard kitchen cupboard†, the Keston Combi 30 & 35 enable heating and hot water to be controlled independently, ensuring maximum comfort and efficiency.

The Keston Combi & 35 can be sited almost anywhere in the home, without the need for a separate tank. And because they connect 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, the Combi 30 & 35 provide excellent energy savings, making it the perfect choice for new or replacement installations alike.

3 or 4 Bedroom House – With Water Storage

Keston Heat 45Kw

The Heat range offers a number of key features that enables ease of installation, maintenance and operation the Heat range is designed to ensure all installation requirements can be achieved.

The lightweight design is supported through quality build and aesthetics that allow for the boiler to be installed either on the wall or into a prefabricated floor mounted frame including back-to-back options.

Supported by a 2 year parts and labour warranty, the 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 and 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 achieve maximum points under BREEAM schemes.

Very Large Homes / Commercial

Frame & Header Kits

The new Keston Heat range of frame and header kits are available, to facilitate up to 6 boilers in cascade. The new Keston Heat frame and header kits offer a simple system installation allowing for outputs from 90kW to 330kW.

The Frame and Header Kit can be installed with either a Keston Sequencer (up to 5 boilers) offering direct modulation of the system, which reduces running costs.

For installation of 6 boilers, two Keston sequencers are required.

The twin flue system allows awkward and difficult to site flue runs up to 21m* (please note each appliance will need a flue and air pipe assembly installed, there is no flue cascade). Simple 50mm MuPVC solvent weld flue reduces time cost and labour. For increased flexibility of siting additional elbows and bends are available for both flue systems. Per 90 degree bend, Keston Heat boilers only require 1m reduction in equivalent flue length.

Gas Pressure test points are fitted to both ends of the gas header to allow left or right hand installation.

Greenheat supply and fit all models of Keston Boilers. Below is a guide for the most popular models from the current range and suitable applications.
Please note boiler types and sizes are only suggestions. We would suggest these are all checked for the output needed for your property.
‘Water storage’ means that you have a method of storing water in your home ie. a hot water cylinder or unvented hot water cylinder.