Keston Keston C30 30kW Combi Gas Boiler

Keston C30 30kW  Combi Gas Boiler
Total Cost
£1,150 - £2,450
Manufacturer Keston
Boiler Model Keston C30 30kW Combi Gas Boiler
Condensing boiler? Condensing
Energy Efficiency Rating 89.60%
Energy Band B Rated
LPG model/Conversion kit Yes
Manufacturer Warranty 7 years
Heating Output 30kW
Wall Mounted or Floor Standing Wall Mounted
DHW Flow Rate 12.4 l/min
Total Cost £1,150 - £2,450
ERP Rating A Heat A Water
Hot Water Max Output

Keston C30 combi boiler review

For complete comfort, choose the Keston C30 twin flue combi-boiler. These wall-hung combi boilers are ideal for replacement or new installations. The flexible twin flue design of these boilers makes them the perfect central heating solution for many domestic settings.


Combination boilers such as the Keston C30 provide hot water and heat to your home without the use of a separate tank. Keston combi boilers are hassle-free and come with up to 7 year warranty+, energy saving features, and twin flue capabilities of up to 27m**.

The Keston combi-boiler range provides first-class comfort in an efficient, compact wall-hung appliance that can fit into standard kitchen cabinets. The combi comes in two output options: 30kW/35kW. Keston C30 boilers offer flexibility while being user-friendly.

Keston C30 twin flue combi boiler

You can connect them to the Keston Twin Flue System so that the C30 Combi boilers are available almost anywhere you want. A conventional combination boiler requires a concentric flue, which must be installed on an exterior wall. The twin flue C30 Combi boilers can be located up to 27m** from flue outlet. This gives you a flexible heating solution that works for many domestic installations.

There is an LPG conversion kit available that allows you to convert your home heating system from natural gas or propane into LPG without having to modify any products.

As standard, the Keston C30 is Boiler Plus compatible. This allows your boiler’s thermostat to be calibrated to the outside temperature to ensure a consistent temperature.

Why choose the Keston 30kw combi?

Combi’s range of heating and hot water options can be independently controlled to ensure maximum comfort year-round. Combi can be relied upon for central heating solutions. It comes with weather compensation and frost protection built in.

Locate a qualified installer and upgrade to a Keston C30

  • 7-year warranty +
  • Easy to read pressure gauge
  • Large backlit LCD display with easy-to-use controls
  • Low Lift Weight
  • Low component count and maximum reliability
  • Compact dimensions
  • 50mm muPVC (PVC–C), solvent weldflue allowing for easy, cost-effective installation
  • Keston Combi Boiler Plus comes standard with Weather Complementator. This makes it compliant right out of the box
  • Pre-fitted filling ring
  • Built-in frost protection
  • Fully modulating
  • LPG conversion kit available

Who are our fitters?

We use our own Gas Safe installers and the best installers the UK has to offer. Every single one is Gas Safe registered and has been thoroughly vetted.

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