Keston are specialists in twin flue condensing boilers. Designed to deliver reliability, the full Keston boiler range has been manufactured by Ideal Heating since 2013. The British-made combi, system and heat only boilers are developed and manufactured to the highest standards. Keston helps you go the distance, with the ability to run a boiler flue pipe vertically or horizontally and extend it up to 27 metres. The Keston Heat 2 boiler is one of our market-leading solutions for challenging domestic and commercial installations, making installation simpler and providing heating engineers with maximum flexibility. With a Keston boiler, everything is possible.