Here’s How You Should Troubleshoot Common Furnace Issues

Here’s How You Should Troubleshoot Common Furnace IssuesMore than half of the homes in the U.S. utilize a gas-fired furnace for heating. The low cost of natural gas, combined with the proven reliability of these heating systems, makes them the prevailing choice for both new residential construction and upgrades. Like all mechanical devices, however, a gas furnace incurs wear and tear over time and performance or efficiency issues may arise. Because a high-temperature open flame, flammable fuel and dangerous combustion gases are involved, almost all repair work should be left to a qualified HVAC service tech. However, a few minor troubleshooting options can be done yourself before calling in the professionals:

When There’s No Heat

  • Make sure the unit’s turned on at the thermostat. Thermostats often get inadvertently switched to the “off” or “cool” position.
  • Make sure the thermostat is set to the proper temperature.
  • Is the furnace’s gas valve shut off? If so, first find out why before you re-open the valve and attempt to light the unit. There could be a valid safety reason for turning off the gas supply.
  • The pilot light is out. If the pilot went out, you can attempt the manufacturer’s instructions to re-light. If the unit won’t re-light, you probably have a defective thermocouple or electronic igniter. Call a pro for repair.

When There’s Heat, but Not Enough

  • Again, verify proper thermostat settings.
  • Check for a dirty air filter. Clogged filters obstruct proper airflow and prevent adequate heat from circulating through the house. The filter should be changed monthly.
  • Other potential causes, such as burner issues, are strictly matters that should be referred to a qualified HVAC service tech.

When the Furnace Runs Non-Stop

  • If the fan switch at the thermostat is set to “continuous,” change it to “auto” and see if that resolves the problem.
  • Check the condition of the air filter. Obstructed airflow may cause non-stop operation because insufficient heat is reaching the thermostat.

Your Wabash Valley go-to source since 1922, contact Paitson Bros. for professional furnace sales and service.

Our goal is to help educate our customers in Terre Haute, Indiana about energy and home comfort issues (specific to HVAC systems). For more information about furnaces and other HVAC topics, download our free Home Comfort Resource guide or call us at 812-645-6859.

Credit/Copyright Attribution: “Viktor88/Shutterstock”

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