5 Reasons Why Your AC Smells Bad

Many homeowners rely on an air conditioner for home comfort, and if it emits an unpleasant odor, there may be a problem with the system that will worsen over time.

In this blog, we’ll look at some of the most prevalent reasons why your air conditioner may be emitting an unpleasant smell.

Five Reasons Why Your AC Smells Bad

  • Musty smell

A musty or mildew odor is one of the most familiar smells from air conditioning units. After removing excess humidity from your home, the air conditioner drains the extra water down a drainage line. If you notice a musty smell coming from your air conditioner, it could be due to a clog in the drain line. Because the water has become trapped in the air conditioner, it will begin to emit a stale or musty smell, which will be carried from the system to the air vents in your home.

  • Burning smell

Turn it off if your air conditioner smells like gunpowder or burning. Because so many components of your HVAC system are electrical, a burning odor indicates that one or more of these are malfunctioning.

Addressing such an issue requires specific skills and may be dangerous, never attempt to repair such a situation; always get professional assistance from AC Company Lawrenceville, GA, to keep you, your family, and your home safe.

  • Skunk smell

If your air conditioning unit emits a smell similar to skunk spray, you have a gas leak leaking into your ducting. If you detect a gas odor in your home, immediately cut off the gas supply and notify your HVAC provider. The expert will assist you in locating the leaks and making the necessary repairs.

  • Feet smell

AC systems that smell like feet are usually blocked and this is because the unit cannot drain, water is sitting in it. The standing water begins to smell, resulting in a strange foot odor. Removing the clog and proper cleaning are required to resolve the problem.

  • Exhaust fumes smell

If your AC system smells like exhaust fumes, it’s most likely due to a refrigerant line leak in your system. Leaking refrigerant is a severe issue since it can impair the efficiency of your AC system. A leak will also release hazardous substances, which can have an impact on both the environment and the health of your family.

If your air conditioner smells like this, call a technician as soon as possible. They can repair the leak and ensure the safety of your house.


When your air conditioner malfunctions, whether due to a bad smell or other issues, it is best to seek the assistance of an air conditioning repair and maintenance company.

If you notice any of the bad smells listed above while using your air conditioner, it’s time to call an HVAC professional from Faith Mechanical for help. Our team of experts will evaluate your AC system and resolve the issue to eradicate the unpleasant scents and restore the comfort of your house.

Contact us at (678) 889-2333 if you have any questions about why your air conditioner smells or needs an AC Installation or cooling service in Lawrenceville, GA.