Our boiler was starting to fail and needed replacing. But, it was a struggle to find someone with the expertise to modernise our existing heating system with HW cylinder (230V S-Plan) to a digital modulation control using our existing Tado smart thermostat. Luckily Alec / Integrated Heating came up with the solution: A 4-pipe boiler with integrated diverter valve and a cylinder probe thermostat. Furthermore, he advised on how the boiler heating circuit could be decoupled from the radiator circuit via a heat exchanger. This prepares the system for future heat sources and also eliminate the potential risk of debris from the old radiators to the new condensing boiler. All was arranged within a few days, installed within one day (he even came back the next day to check it) and charged as promised.