What Your HVAC Techician Checks During Standard Heating Maintenance

28 September 2018
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Heating system maintenance is necessary to the longevity of your heating system. You should hire a heating, ventilation, and air conditioning (HVAC) technician to come to your home annually to check out the furnace or boiler. If you think this may be a waste of time, you may want to change your mind after reading about everything an HVAC technician checks during a maintenance appointment.

The Electrical Panel

If you have an electrical furnace, a boiler, or any sort of heater that requires electricity, there is an electrical panel inside your furnace/heating system. The panel is usually found on the side or back of the system's main box. The panel is generally small, but it connects with numerous wires to the thermostat and to your fuse box. Wires can come loose, short out, or become damaged as a result of pests. The technician checks all of the wires on the panel to make sure the wires are still connected, intact, and that they do not need to be replaced or soldered back onto their connections on the panel.

The Fan

Every type of heating system requires some sort of fan in order to force the heated air to rise up through the vents. Even boilers require pressure and a fan to move air upwards. Your technician checks this fan, which is typically held in place with a bolt and nut or connected to the engine that propels the fan. In some systems, the rotation also relies on a rubber belt and motor system to spin the fan blades. However the fan/forced air system works in your heater, the technician checks all of the components, tightens things that are too loose, and examines things that may break soon.

The Ignition and Fuel Systems

Almost every heating system operates with an ignition system. An electrical ignition creates a spark from which the furnace can create heated air. Natural gas, oil, and propane ignition modules ignite the fuel, which then warms the air. A boiler is a little different, but it still ignites and heats water internally to create hot steam. The technician checks the ignition module on your system to make sure it is still functioning properly.

If your system runs on a gas or liquid fuel, it has additional components that need to be checked. For example,blockages in an oil line for an oil furnace have to be cleared. Propane and gas lines should have zero leaks to prevent accumulation of toxic and potentially explosive gases. The technician will check all of this.