Features & Benefits

The Keston System boiler provides a simple and reliable solution for a wide variety of sealed domestic systems.

Available with a 30kW output, 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 7 year parts and labour warranty†, the Keston System boiler provides simple heating control, all from a single compact appliance.

  • 7 year warranty†
  • Easy to see pressure gauge
  • Large backlit display with user friendly controls
  • Low lift weight
  • Low component count, maximising reliability
  • Compact dimensions
  • Twin flue up to 27m**
  • 50mm muPVC (PVC-C) solvent weld flue allowing simple, cost effective installations***
  • Weather compensation supplied as standard
  • Inbuilt frost protection
  • Fully modulating
  • LPG conversion kit available

* Please check cupboard size prior to installation.

** For the maximum total equivalent flue length please refer to the installation manual.

*** The only systems approved for this application are: Marley muPVC (PVC-C) Solvent Weld Waste System (50mm), Polypipe System 2000 muPVC (PVC-C) Solvent Weld Waste System (50mm), Polypipe Terrain Solvent Weld System (50mm) and Wavin Osma PVC-C Solvent Weld System (50mm). Please use the recommended Solvent Weld Cement for each system.

† 7 year warranty when installed with a Keston filter and registered within 30 days of installation. 5 year parts & labour warranty as standard. 7 year warranty available until 31/12/19. Terms and conditions apply; click here to read them.

Boiler images are for illustrative purposes only.

  • 7 Year Icon 7 YEAR WARRANTY†
  • Twin Flue Icon TWIN FLUE SYSTEM
  • Weather Comp Icon V2 WEATHER COMPENSATOR

Controls & accessories

  • Keston System Filter 320X320

    Keston 22mm System Filter

    The Keston 22mm System Filter is a magnetic filter for use with Keston Combi and System boilers. The compact forged brass design is easy to install and fits on horizontal or vertical pipework in both flow directions. 

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  • Keston Rf Electronic Thermostat

    RF Electronic Programmable Room Thermostat

    This Radio Frequency (RF) digital timer provides heating and hot water control via a simple user interface.

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  • 2016 Mechanical Timer R 1

    Mechanical Timer

    Our 24 hour mechanical timer is a simple plug-in option. Continuous, timed or off modes can be set, providing 15 minute period operation.

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