When your air conditioner starts spewing unusual or gross odors, it is important to take notice because it could be a sign of a major problem. Disregarding unpleasant smells coming from your air conditioning can lead to further damage to your air conditioning or even pose a risk to your health and safety.

Depending on the cause of the odor, the cause might be bacteria or fungus in the system. Other times, it could also signal something mechanically wrong with the air conditioner. Some smells are even indicative of a harmful situation, such as a natural gas leak.

At Farris Heating & Air, we are skilled at diagnosing and fixing these type of problems. If you smell something weird coming from your air conditioner, you can bet that our team of qualified pros has smelled it, too—and fixed it! We’ve earned the reputation as the premier company for air conditioning repair in Bartlesville.

What does a certain smell billowing from your AC mean? Here are a few typical air conditioner odors and what they may mean:

Your AC Smells Like Feet

If your air conditioner smells like feet, it may be caused by a buildup of bacteria or fungus in the system. When moisture builds inside the unit, it can produce an environment that is beneficial to the spread of bacteria and fungus. This can result in a bad odor that is often described as smelling like stinky feet.

Another potential explanation for the stench of dirty feet may be a dirty air filter. When the air filter becomes filled with dirt, dust and other contaminants, it can lead to poor air quality and a musty smell that resembles feet.

To solve this issue, it’s important to have an experienced specialist inspect and clean your air conditioning system, including the evaporator coil, drain pan and condensate drain line. It’s also important to exchange the air filter on a regular basis to provide good air quality and protect against the formation of bacteria and fungus.

The Air Conditioning Smells Like Rotten Eggs

If your air conditioner stinks like rotten eggs, it might be due to a natural gas leak in the unit or in the surrounding area. Natural gas has a recognizable odor, often described as smelling like rotten eggs or sulfur, which is added to it to make it easily detectable.

A natural gas leak is extraordinarily dangerous and requires immediate attention. If you suspect a gas leak, turn off your air conditioning system, immediately open windows and doors to allow gas to escape the area, evacuate the building and call your gas company or emergency services right away.

Your AC Smells Like Mildew

If your air conditioner emits a smell like mildew, it could be due to a collection of moisture inside the unit. When moisture accumulates inside a cooling system, it can foster the growth of mold and mildew. This can cause a musty stench that resembles mildew.

Another possible explanation for the smell may be a clogged air filter. Once the air filter becomes clogged, it can cause poor air quality and a musty smell that has a resemblance to mildew.

Annual air conditioning maintenance from Farris Heating & Air can help prevent both of these issues, because a good cleaning, inspection and filter change is a great way to keep your system running at its best!

Your AC Smells Like Urine

One of the most undesirable things is when your AC smells like urine.

If your air conditioning equipment stinks like urine, it could could be caused by multiple factors. One possible cause is a collection of bacteria or mold in the your HVAC. This can happen when moisture accumulates in the system and creates a wet environment that can promote bacterial growth. The bacteria can create a foul odor that resembles urine.

Another feasible cause of the stink could be a blocked drain line. The condensation that forms inside the air conditioning unit needs to drain away correctly, but if the drain line becomes clogged with debris, it can cause water to back up and build up inside the unit. This can create a musty smell that resembles urine.

The Air Conditioning Smells Like Burning Plastic

If your air conditioning system smells like burning plastic, this could indicate an electrical concern with the unit. Over time, the electrical parts in the air conditioning system can wear out or bust, which can make a burning smell that resembles plastic.

Another possible cause of the smell could be a foreign object that somehow got in the the air conditioner. If something foreign gets stuck in the air conditioning system, it can heat up and emit a smell similar to burning plastic.

If you think you smell burning plastic coming from your AC unit, it’s important to phone a professional right away.

Your AC Smells Like Gas

If your air conditioner smells like gas, it could be because of a natural gas leak in the unit or in your home. Natural gas has a distinctive odor, often described as smelling similar to rotten eggs or sulfur. That’s because a smell is added to natural gas to make it easily detectable.

As mentioned before, a natural gas leak can be VERY hazardous and requires immediate attention. If you suspect a gas leak, turn off your air conditioning system, open windows and doors to air out the home, leave the building and phone your gas company or emergency services right away.

Your AC Smells Like Fish

If your air conditioner smell like fish, you may have a situation where there’s a build-up of bacteria or mold in the unit. Moisture creates an environment that is conducive to the growth of bacteria and mold. This can cause a disgusting odor that is sometimes described as smelling like fish or, as mentioned earlier, it also can cause a smell like dirty feet.

Another plausible explanation for the smell could be a dead animal or other biological material trapped within the air conditioning system. This often is possible if an animal such as a mouse or bird is trapped inside the unit and dies.

To solve the issue, it’s worthwhile to have a professional check out and clean your HVAC system. They will be able to determine the source of the smell and take the proper steps to remove any contaminants and prevent the problem from recurring.

My Air Conditioner Smells Like Vinegar

There could be multiple reasons a home’s air conditioner smells like vinegar. One possible cause is a dirty air filter. A second possible cause of the smell may be a refrigerant leak. When the refrigerant leaks, it can create a chemical odor that resembles vinegar.

To fix the issue, it’s beneficial to have a skilled mechanic examine and clean your air conditioning.  If the odor lingers after the cleaning and changing of the air filter, it’s best to reach back out to a professional to diagnose and repair any hidden issues with your air conditioning. Or, the mechanic can tell you if your air conditioning should be replaced.

If you are wanting to upgrade, Farris Heating & Air can help locate the ideal unit to fit your home’s needs. We deliver trustworthy, skilled air conditioner installation in Bartlesville.

Your AC Smells Like Chemicals

If the smell of chemicals is coming from your air conditioner, it could be the result of a refrigerant leak. When the refrigerant leaks, it can create a chemical scent that people sometimes describe as smelling like chemicals or paint thinner, vinegar or acetone.

One other possible source of the smell could be something wrong with the electrical wiring or components inside the air conditioning system. This can result in a burning smell that is like chemicals or burning plastic.

If you suspect a refrigerant leak or an electrical issue, it’s important to turn off your air conditioning system immediately and contact a professional to inspect and repair the unit. Refrigerant leaks can be hazardous and may require immediate attention to avoid injury or damage to your home.

Strange Smell Coming from Your AC? Contact the Experts at Farris Heating & Air

If your air conditioner stinks and you aren’t able to fix it quickly on your own, reach out to the cooling specialists at Farris Heating & Air. We have lots of experience working with a wide variety of cooling systems. Our crew has fixed many air conditioning concerns through the years—including strange smells. Call us today for quality AC repair in Bartlesville!