The gas furnace is designed to be a low-maintenance piece of equipment. However, this does not mean that homeowners should simply set and forget. It still requires some attention to ensure safety and reliability for years to come. Periodic maintenance must be conducted each year by a licensed and certified technician, like Amber Air Conditioning Inc. of Lake Elsinore, CA. It is not wise to try to save a few dollars by going DIY on this procedure as only trained experts truly understand the complexities of a heating system. Ordinary people may miss signs of impending failure. Technicians can spot problems at once and make the necessary repairs.
The first step is to turn the power off so that the internal components can be checked without danger. This can be bothersome during the height of winter which is why inspections should be done prior to the season. Of course, it is better late than never. If the chill has already set in, then the appointment can be arranged at a convenient time when there are few people at home. The whole procedure should last about an hour or more depending on the system configuration and issues encountered. Technicians charge for their time and add the cost of the parts that need replacement.
The gas valve will also be closed for the duration of the maintenance check. Technicians will then work systematically to clean up the furnace from the inside out. Dirt and dust naturally builds up around the unit over time. These can interfere with the normal operations if ignore so they will make the area spotless and dirt-free. They will then inspect the wires for any rust and signs of wear. The controls will be analyzed. The furnace components will not escape thorough scrutiny. If any of them are found to be defective, then they may be replaced on the spot since parts are available inside the service vehicle.
Priority will be given to the built-in safety mechanisms. These deserve particular attention as any malfunction could lead to dire consequences. Technicians will see to it that each is functioning properly and that vital signs like gas pressure are within an acceptable range. Others that will have to be scrutinized include the air filter, which could become clogged with dirt; the belt tension, as it may get stretched and come loose; and the fan belt, which can exhibit cracks.
Every heating zone will have a thermocouple. This component is responsible for creating the desired increase in temperature. Technicians will see to it that the connections are working and producing adequate voltage. Another is the thermostat contacts. If these are faulty, then the boiler will not react to the thermostat setting so the heat produced by the system may not be appropriate. Responsiveness may also be improved by using a new set of thermostat batteries.
