If you have a forced air heating system and are experiencing issues with your furnace, it is important to address these issues as soon as possible to ensure that your home stays warm and comfortable. While some furnace repairs may require the expertise of a professional HVAC technician, there are a few steps you can take to troubleshoot and fix common issues on your own.

Here's a quick guide on how to troubleshoot and repair common issues with forced air furnaces:

Thermostat and Switch

Forced air heating systems have relatively few electronic components; however, these components can be susceptible to shorting and other issues.

• Thermostat: The first thing you should do when your furnace is not working properly is to check the thermostat. Make sure that the thermostat is set to "heat" and that the temperature setting is higher than the current room temperature. If the thermostat is not set correctly, the furnace will not turn on.
• Switch: Many forced air furnaces have a switch located near the furnace or on the wall that controls the power supply to the furnace. Make sure that the switch is turned on.

Filter, Fuel Supply, Ignition

Forced air furnaces have a penchant for accumulating dust, which can foul filters and impact fuel supplies.

• Filter: A dirty furnace filter can cause several issues, including reduced air flow and reduced efficiency. If you have not replaced the filter in a while, it is a good idea to check it and replace it if necessary.
• Fuel Supply: If you have a gas furnace, make sure that the gas supply to the furnace is turned on and that there are no gas leaks. If you have an oil furnace, check the oil tank to ensure that it is full and that the oil supply line is not clogged.
• Ignition System: If your forced air furnace is not turning on, it could be an issue with the ignition system. Check the ignition system to ensure that it is functioning properly. If it is not, you may need to replace the ignition control or the ignition sensor. Ignition switch systems are often the problem when fuel supply and thermostat issues are ruled out.

If you are unable to fix the issue with your furnace on your own, it is important to call a professional HVAC technician to diagnose and repair the problem. Attempting to fix complex issues with your furnace can be dangerous and may cause further damage to the system. Contact a company that offers furnace repair services to learn more.