Keston Keston C35 35kW Combi Gas Boiler

Keston C35 35kW Combi Gas Boiler
Total Cost
£2,000 - £2,500
Manufacturer Keston
Boiler Model Keston C35 35kW 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 35kW
Wall Mounted or Floor Standing Wall Mounted
DHW Flow Rate 14.5 l/min
Total Cost £2,000 - £2,500
ERP Rating A Heat A Water
Hot Water Max Output

Keston C35 combi boiler review

The Keston C35 twin flue combi boilers provide complete comfort with a single appliance. These compact, wall-hung combi boilers can be used to replace or install new installations. Their flexible twin flue design makes them an ideal central heating solution in a variety of domestic settings.

Keston C35 Combi: Features and benefits

The combination boilers, the Keston C35 models, provide heat and hot water to homes without the need to have a separate water tank. A Keston combi boiler is a hassle-free choice for home heating. It comes with a 7-year warranty+, energy-saving features, and twin flue capability up to 27m**.

The Keston combi boiler series offers high-quality comfort in a small, wall-hung appliance that is small enough to fit into a standard kitchen cupboard*. This combi boiler is highly modulating and extremely efficient. It comes in two output options, 30kW or 35kW. The Keston C35 boilers combine flexibility and user-friendliness. They are made with carefully selected components to maximize reliability.

Keston C35 twin flue combi boiler

The unique Keston Twin Flue System allows the C35 Combi boilers to be connected almost anywhere in your house. The concentric flue of a traditional combination boiler must be mounted on an exterior wall. However, the twin flue C35 can be placed up to 27m** away from the flue outlet. This allows for flexible heating solutions that will work with a wide range of domestic installations.

A LPG conversion kit can also be purchased. This allows for simple gas conversions for heating systems that use natural gas or propane, without the need to adjust products.

The standard Keston C35 boilers are Boiler Plus-compliant. A weather compensation kit is also included. This allows the boiler to detect outside temperatures and adjust the boiler flow to achieve a consistent temperature. It also saves energy.

Why choose the Keston C35 combi boiler?

The Combi range is designed to provide maximum comfort throughout the year. Heating and hot water can be independently controlled. Combi is a reliable central heating system that includes weather compensation and inbuilt frost protection.

Find a qualified installer near you and upgrade to a Keston C35.

  • 7-year warranty+
  • It is easy to read the pressure gauge
  • Large backlit display with user-friendly controls
  • Lift weights that are low
  • High reliability, low component count
  • Compact dimensions
  • 50mm of muPVC (PVC–C) solvent weld flue allows for simple and cost-effective installations
  • Keston Combi Boiler Plus is compliant with the weather compensator as standard.
  • Pre-fitted filling loop
  • Frost protection built in
  • 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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