Ten Most Common Furnace Problems
Listed are the most common heater issues we encounter.
More often than not, the cause of your heater’s malfunction is actually pretty common. We’ve compiled a list of typical issues that affect HVAC units so you can better comprehend what’s happening to your heater so you can spot and prevent future problems.
This blocks airflow, causing your heater to function inefficiently and electricity costs to rise. If your filter is older than three months, it’s time to replace it.
You can check for any leaks by going into your attic or crawl space. Take a lighted incense stick with you and if the smoke moves, then you have a leak in the ducts.
Results could range from intermittent heating to no heating at all.
Fan stopped working
If it’s caused by your thermostat or a dirty filter, try flipping the circuit breaker, but only once to avoid causing a fire.
You can prevent it from happening with proper insulation, but if you’ve got mold, leave cleaning to the professionals.
Burning smell from heater
Immediately shut it off and unplug. It’s not necessarily caused by anything life-threatening but it’s best to be safe. Check for dust buildup on your filter and in your furnace. If it persists, call an HVAC technician.
Some sounds aren’t natural to the design of a heater, indicating a problem. Schedule an appointment with an experienced technician.
Furnace won’t release heat
Check your thermostat settings, gas, power and pilot light.
Heater blows cold air
The causes are the same as when a furnace isn’t giving off any heat.
The blower won’t stop
Your heater comes with a mechanism called a limit switch which is responsible for halting the blower. Call an HVAC expert to take a look at it.