How To Replace a Baxi DuoTec Plate Heat Exchanger | Baxi DuoTec Boiler Banging | Step-By-Step Guide

If your Baxi DuoTec boiler starts banging or vibrating when you run the hot water, it’s often caused by a blocked plate heat exchanger restricting flow between the primary and secondary circuits. In this video, I show you how to replace the plate heat exchanger step-by-step and get the boiler running smoothly again. This fault is common on Baxi DuoTec, Main Eco, and Potterton Gold models — especially if the system water is dirty or the boiler hasn’t been serviced regularly. 🧰 In this video: • Symptoms of a blocked plate heat exchange • Step-by-step replacement of the plate heat exchanger - #BaxiDuoTec #BoilerBanging #BlockedHeatExchanger #BoilerRepair #GasEngineer #PlumberLife #HeatingEngineer #BaxiBoiler #CentralHeating #BoilerMaintenance #PlumbingTips #BoilerService #DIYBoilerRepair #PlumbingAndHeating #EngineerLife