subject: Gas Furnace Tune Up Specifics [print this page] Maintaining a gas furnace is key in making sure a heating system is running properly. Just as a car needs an oil change every so many miles, a gas furnace can also benefit from preventative maintenance. A furnace repair can sometimes be extremely expensive. Trained HVAC technicians can diagnostic tests to ensure the unit is functioning properly. Listed below are a number of items that a trained technician would look for during a gas furnace tune up. This particular tune up differs from an electric furnace tune up because of the different components in each system.
Calibrate Thermostat Improper calibration can lead to a system providing the wrong amount of heating or cooling desired. This, in turn, can lead to higher utility bills and inadequate home comfort.
Remove and Clean Burners Cleaning the burners allows for more efficient burning.
Check Electrical Connections Loose connections can cause components to malfunction and possibly fail due to improper voltage. Also, connections that are not secure could cause a sparking within the unit and jeopardize overall safety.
Check Blower Components Making sure the blower is clear of dirt and debris helps the unit run as efficiently as possible. A clean blower wheel as allows the proper amount of airflow.
Lubricate Blower & Motor Proper lubrication of moving parts reduces friction and makes the unit itself run quieter. It will also extend the life of the blower by allowing it to run cooler.
Check Pilot Light and Burners Smooth ignition is very important to system health. The pilot light and burners will be observed for proper burning and flame color.
Check Heat Exchanger To avoid carbon monoxide in the home the heat exchanger is checked for cracks and cleaned to ensure proper functionality.
Check High Limit Control A faulty high limit control could result in the unit itself overheating and possible damage to the home.
Check Fan and Temperature Range A technician will observe the temperature rise throughout the system and make sure the fan starts/stops on command. This ensures that the system is heating the home as the homeowner desires.
Clean and Check Flue Prevention of flue obstructions and allowing fuel draft to proper out of the unit is imperative in furnace efficiency.
Check Gas Pressure Proper gas pressure allows the unit to function properly given the homeowner settings.
Check Heat Anticipator This element is located in the thermostat and when functioning correctly ensures that the furnace will provide heat when necessary.
Check for Gas Leaks A technician will make sure there are no gas leaks to prevent future safety and health issues.
Check Fan Belt Properly fastened fan belts ensure that the system is running as efficiently as possible.
Inspect Thermocouple and Igniter This inspection makes sure the system has the proper burn.
Inspect Furnace Filter A dirty air filter can reduce the overall system efficiency and can make the unit work harder given the reduced air flow coming into the system.
Wash Furnace Exterior A technician will wash and clean the exterior of the unit to remove dirt and buildup. Keeps the unit looking good and extends the life.
All of these tests work to determine if there is anything wrong with a homeowner's heating system. Yearly maintenance can help to prevent a costly furnace repair or new furnace replacement.
