British company keston has been designing and manufacturing boilers for over 90 years. Purchased by Ideal boilers in 2006, Keston boilers have been built on site in Hull since 2013.

With boiler sizes starting at 30kW, Keston boilers are designed for larger homes that have at least 3 bedrooms and a minimum of 9 radiators.

The company has a solid reputation and all of its boilers come with a 7 year parts and labour warranty. One of the biggest selling points of a Keston boiler is its twin-flue system which can be extended up to 27 metres, allowing it to be installed almost anywhere in your home.

Keston combi boilers

Combi boilers connect directly to your mains water and supply hot water whenever you need it, eliminating the need for a hot water cylinder and a cold water storage tank.

Keston manufactures two models of combi boiler: the C30 and C35. Both of these boilers have an efficiency rating of 89.6% and come with a 7 year warranty.

Boiler model kW Output Efficiency Warranty Price
Keston C30 30kW Combi Gas Boiler 30kW 89.6% 7 years £1,140
Keston C35 35kW Combi Gas Boiler 35kW 89.6% 7 years £1,180

Keston regular boilers

If you already have a regular boiler installed in your home but need to replace it, it's usually cheapest and easiest to fit a new regular boiler.

If you have multiple bathrooms and a high demand for hot water, a regular boiler is the best choice. The Keston heat models are available in either 45kW or 55kW outputs and are ideal for large homes with several bedrooms and more than one bathroom.

Boiler model kW Output Efficiency Warranty Price
Keston Heat 45kW Regular Gas Boiler 45kW 89.2% 7 years £2,225
Keston Heat 55kW Regular Gas Boiler 55kW 89.6% 7 years £2,610

Keston system boilers

There are lots of advantages in fitting a system boiler. They are able to supply hot water to multiple outlets at the same time without losing pressure, and unlike a regular boiler they don’t need a supply of cold water from a storage tank.

The Keston S30 is a 30kW boiler, which is more than capable of providing hot water to multiple bathrooms and heating up to 15 radiators.

Boiler model kW Output Efficiency Warranty Price
Keston S30 30kW System Gas Boiler 30kW 89.5% 7 years £1,100
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