Gas inlet and burner pressure checked Cleaning of the electrodes to maintain the flame failure device Visual inspection of the flue and boiler casing for leakage Controls tested Dust and dirt removed from the heat exchange unit Electronic flue analysis to compare combustion efficiency to manufacturer's guidelines (printout provided) Gas inlet pressure checked Written service report given to customer What is a service? Whilst a gas safety check assesses the basic safety of a gas appliance a service will consist of a full check of a gas appliance and the engineer is likely to take the appliance apart to inspect it. The engineer will assess the physical condition of the appliance, installation pipework, air vents and any flues for deterioration. They will carry out performance tests and take any necessary remedial action. Appliances should be serviced regularly in accordance with manufacturer’s instructions. Servicing your gas appliances regularly will make sure they are safe to use. It will also maintain your appliances efficiency and performance. Signs that your appliances need servicing? Gas appliances should be serviced regularly but if you notice any of the warning signs below you should arrange for a Gas Safe registered engineer to service your appliance as soon as possible: Your gas appliance is not working properly Your appliance is burning with a lazy yellow flame instead of a crisp blue flame You can see black marks or stains on or around your gas appliances The pilot light keeps going out There is increased condensation in the room