Heating System Maintenance: Reasons For A Burning Smell In Your Furnace


A furnace is necessary for providing indoor comfort when the outdoor temperatures are freezing. However, it can be frustrating when your system has a burning smell lingering in your home. Ultimately, this leads to an uncomfortable atmosphere while consuming more energy. Therefore, it is wise to hire an HVAC technician to inspect your unit and fix the malfunction for peak performance. Below are the reasons for a burning smell in your furnace.

Dust On the Furnace

If you engage your system after a duration of dormancy, you may notice a burning smell from your unit. In most cases, this is due to dust accumulating on the heating unit over time, especially during summer. Additionally, clogged air filters can cause dust to bypass them and deposit on the burners. As a result, the dust will burn off after your furnace heats up, emitting a smoky scent. Note that if you neglect getting rid of the dust, it may build up on the burners, restricting heat transfer. Thus, you should clean your unit and replace filters to eliminate this issue.

Electrical Issues

Your heating unit will accumulate a lot of wear and tear over time, hindering its performance. As such, the furnace wiring may become loose, causing a short circuit. On the other hand, voltage spikes and power surges can cause the system's circuitry to overheat. Consequently, the plastic casing on the wires will melt, emitting a burning smell. This may lead to your circuit breaker tripping, rendering your system inoperable. Proper maintenance will avert any electrical faults in the future and ensure proper current flow.

Clogged Furnace Filters

A furnace depends on the filters for clean air circulation. However, these filters may accumulate dirt and other airborne particles, restricting airflow. As a result, poor airflow causes the blower motor to strain in pushing heated air, causing it to overheat. Ultimately, this leads to a burning smell similar to that of gunpowder, triggering the circuit breaker. Thus, you should clean or replace your filters for proper airflow.

Oil Fuel Source

An oil furnace will emit a faint oil smell when operating. However, if this smell lingers, your oil burners could be the culprit. In most cases, the issue may result from thermal stress, causing the burners to crack. Subsequently, the nozzle in your burner may spill a little oil for ignition, causing oil smells. In addition, loose connections can cause oil to leak, leading to the unit emitting fuel odors. Regular maintenance services will help you spot and fix such problems.

You must note that exposure to high concentrations of burning smells from your furnace can adversely affect your health. Therefore, you should employ the services of a heating maintenance expert to service your unit and ensure it operates at peak performance. For more information on heating system maintenance, contact a professional near you.


9 January 2023

Plumbing Has Transformed Our Lives

Think about how different your life would be without plumbing. To get water, you would have to walk outside and pull it up from a well. To use the bathroom, you would have to venture out to an outhouse, which would certainly not be pleasant in the winter. We really have to thank plumbers for the work that they do, since it allows us all to stay comfortable and do our business inside of our homes. Life has been transformed, in so many ways, by the plumbing profession. Join us in honoring plumbers by reading the articles on this website.