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