Why Is There a Burning Smell Coming From My Furnace?

August 05, 2024


furnace tech

We depend on heating to keep warm during the cold months in Fredericksburg, Virginia, and nearby communities. It is important to keep your heating system in good condition for energy efficiency, comfort and safety. A burning smell coming from your furnace could indicate problems ranging from a dirty filter to burning electrical wires. Homeowners can begin by troubleshooting the problem. However, if it persists, it is best to call a furnace repair professional.

Dirty Filters

The most common reason for a burning smell is dust, hair and other debris in a dirty filter. When filters are not cleaned regularly, they become embedded with airborne particulates that restrict airflow through the system. Over time, pollutants bypass the filter, enter ducts and are blown through vents into the living space. Cleaning or changing the filter should solve the problem.

Furnace Overheating

If your furnace cycles on and off frequently, it may be overheating. Frequent stops and starts are a warning sign of a potential breakdown that should be investigated immediately. Furnaces that overheat can damage the heat exchanger or create heat buildup that can start a fire. Overheating may be due to dirty filters, faulty electrical wires, an object in the ducts or a problem with combustion. If filters are clean, call a heating repair professional to investigate.

Gas Leaks

A smell of sulfur or rotten eggs is a sign of a gas leak. In this case, turn off the unit, leave immediately, and call the gas company and your HVAC professional. Although leaking gas has a noticeable smell, carbon monoxide does not. Incomplete combustion and inadequate ventilation can allow carbon monoxide to build up in your home. Install and maintain a carbon monoxide sensor to alert you if levels become dangerous.

Seasonal maintenance reduces the incidence furnace breakdowns or costly repairs. During a maintenance checkup, each component of the system is examined and calibrated. Technicians clean filters, test for gas leaks, examine wiring and other components of the electrical system and ensure that the unit cycles and shuts down properly.

Total Comfort provides new installations, heating repairs, preventive maintenance and indoor air quality services for all brands of HVAC equipment. We are a Trane Comfort Specialist, a prestigious designation that requires technical expertise and high customer satisfaction. We are available for emergencies that cannot wait.

For more information about our heating repair services, call Total Comfort today.

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Last Updated: November 19, 2024