If you think this may be the reason that your furnace is overheating, you should reach out to a technician. The blower is something that should be maintained by a professional, and a technician can easily clean this and other parts of your furnace to ensure it's working well.Feb 11, 2020
Why is my furnace overheating and shutting off?
If your furnace keeps shutting off, it could be due to low airflow. There are several indirect issues that cause low airflow. Dirty Air Filters. If you don't change your air filters often enough, the filters will become dirty and clogged, which means the heat exchanger retains heat and eventually causes it to overheat.
How do you know if your furnace is overheating?
- A constant burning aroma.
- A strange humming noise.
- The furnace turns off before finishing a cycle.
What happens if furnace overheats?
The most serious risk of an overheating furnace is stress cracks in the heat exchanger caused by overheating. The vast majority of premature heat exchanger damage is due to overheating as the heat stress causes cracks near the welds and bends.
How do you fix a furnace that overheats?
- Turn down the thermostat to its lowest setting.
- At the circuit breaker, turn off the power to the furnace.
- If this is a gas furnace, turn off the gas supply at the valve for the main gas pipe, but leave the pilot's gas supply on.
- If the pilot light was out, light a match to relight it.
How do you know if your heater is overheating?
- You notice a “hot” or burning smell coming from the vents. ...
- You hear strange noises or loud humming coming from the furnace. ...
- You notice the furnace cycling off without starting again.
Will a furnace shut off if it overheats?
Your furnace may be shutting down because the heat exchanger is overheating. When the heat exchanger overheats, the furnace shuts down to protect it from cracking. When the exchanger cools, the furnace cycles back on.
How do I cool down my furnace?
https://www.youtube.com/watch?v=8BNACihwBSA
What would cause a furnace to overheat?
One of the most common and simple causes of an overheating furnace is poor air circulation. The internal components of your furnace can get too hot when there isn't good airflow. ... As the filter and ventilation system become clogged, airflow is impeded, which makes the furnace work harder and get hotter.