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