Heating Replacement Spares have all the MAIN boiler parts you may require for your heating appliance, our boiler spares profile for MAIN spares are as follows MAIN Automatic air vent, MAIN Burners, MAIN Casings, MAIN Control knobs, MAIN Diaphragms, MAIN Electrodes, MAIN Expansion vessels, MAIN Fans, MAIN Flow switches, MAIN Gas valves, MAIN Gauges, MAIN Heat exchangers, MAIN Injectors, MAIN Microswitches, MAIN Printed circuit boards, MAIN Pressure switches, MAIN Pressure gauges, MAIN Pumps, MAIN Temperature gauges, MAIN Thermistor sensors, MAIN Thermocouples, MAIN Thermostats, MAIN Transformers, MAIN Wiring harnesses etc, when purchasing MAIN heating spares from Heating Replacement Spares you can guarantee you will receive genuine manufacturer MAIN boiler spare parts.