As your furnace continues working this winter to keep your home warm, you might run into unforeseen issues along the way. For a conventional mid-efficiency gas furnace, troubleshooting can help to determine the problem and the best next step to get your heat functioning properly again so your home stays comfortable.

1. No Heat

If your furnace is on but not producing any heat, there are a few issues that could be taking place.

  • Thermostat: Make sure your thermostat is set to heat, and adjust the temperature by a few degrees. In some cases, your thermostat might not be working altogether.
  • Circuit breaker and fuse: Has the circuit breaker tripped or the fuse blown that connect to the furnace? You may need to reset the breaker or replace the fuse, if so.
  • Pilot light: If your furnace operates with a standing pilot light, make sure it is lit. The thermocouple that works alongside the pilot light could also be faulty and causing the gas supply to shut off. Otherwise, you can relight the pilot light according to your furnace instructions, or play it safe and call a professional Gillece HVAC technician.

2. Inadequate Heat

If your furnace is running but not producing enough heat, consider the following:

  • Dirty air filter: An air filter is an essential component of your furnace that should be replaced regularly. If it’s dirty, it could be the cause of a number of performance problems and potentially lead to your furnace’s breakdown.
  • Gas burners: The gas burners could also be dirty or need to be adjusted. Call in an HVAC pro to do the job.
  • Air flow: Ensure that air flow isn’t obstructed to the combustion chamber where dirt buildup may exist.

3. Frequent On and Off Cycle

If your furnace turns on and off too frequently…

  • Air filter: Again, a dirty air filter may likely be to blame.
  • Blower motor: The blower motor may need oiled or the belt tightened.
  • Thermostat problem: If the issue is not related to your furnace itself, a thermostat glitch could be the culprit.

4. Noisy Furnace

Some furnace noises are normal, but others could indicate a problem.

  • Squealing sound: Motor or shaft bearings need oiling.
  • Rumbling noise (burners off): Pilot light is poorly adjusted
  • Rumbling noise (burners on): Gas burners are dirty and need cleaned.

There are a variety of problems that can arise with a gas furnace, and your best bet when something goes wrong is to call in a professional. Gillece HVAC Technicians can help with all of your home’s heating needs- emergency, maintenance, repair, or replacement. Don’t forget that regular furnace maintenance can help to prevent many common problems, keeping your heat functioning properly for a warm, safe, and comfortable home all winter long.