It’s disconcerting when a heater’s on-cycle is accompanied by a scorched scent. However, there's no need to panic since not all smells signal the need for furnace repair. Some odors are only temporary symptoms and shouldn’t be viewed as an emergency. Read the following guide to learn what might be causing a burning smell and what you can do to curb and prevent it. 

A Guide to Furnaces & Burning Smells

What Causes Burning Odors?

If the furnace hasn’t been used for a while, dust can settle on the heating elements. When the HVAC system fires up, the particles burn, leaving behind an acrid, smokey scent. If moisture has gotten into the heater, the odor can seem musty. 

A plastic or electrical burning smell is more concerning. This can mean the motor is overheating or indicate an issue with the wiring that needs to be addressed as soon as possible.

What Can You Do to Stop It?

Most unpleasant odors from heaters dissipate after the system runs for a few minutes. Once the layer of dust has burnt off, the smell shouldn’t return. However, if it persists, try changing the air filter. The particles and contaminants it traps could be emitting smells as they warm up. 

When your nose detects something resembling burnt wiring, switch the furnace off immediately. Letting it run can put your safety at risk while also causing further damage to the heating system. 

When Do You Need Furnace Repair?

Since burning smells should pass quickly, there may be something else wrong if they’re growing stronger as the furnace operates. An experienced technician can diagnose the true cause. 

If regular air filter changes don’t improve dusty scents, schedule a duct cleaning. This clears out particles that build up in the system and improves overall air quality. Treat any electrical odors as emergency situations to be safe. Contact a furnace repair service and don’t run the heat until they have completed a thorough inspection.

For help with furnace maintenance, turn to AirChanics of Ohio Heating & Cooling. This veteran-owned and -operated business has 30 years of HVAC experience, and they serve residents in Beavercreek, OH, and the surrounding areas. AirChanics of Ohio is proud to be an authorized Amana and Goodman dealer. Their air quality professionals service all brands of HVAC equipment and can help you decide whether an existing unit needs repairs or replacement. Either way, their team offers affordable options. They are honest and reliable, evaluating every system thoroughly to provide optimized solutions. Call (937) 426-4022 to set up an appointment, or read more about their furnace repair services online.