When your air conditioner starts emitting strange or unappealing odors, it is important to take notice because it could be a sign of a big problem. Dismissing unpleasant smells coming from your cooling system could lead to serious damage to your air conditioning or even pose a risk to your health and safety.

Depending on the smell, the root of the problem may be bacteria or fungus in the system. On the other hand, it could also signal something mechanically wrong with the AC. Some smells are a sign of a harmful situation, such as a natural gas leak.

At Bishop Heating & Air Conditioning, we have a nose for these sorts of things. If you smell something odd coming from your air conditioner, there’s a good chance our team of skilled specialists has smelled it, too—and fixed it! We’ve earned a reputation as the first call for air conditioning repair in Bishop.

What does a particular smell wafting from your AC mean? Here are a few frequent air conditioner aromas and what they might mean:

Your AC Smells Like Feet

If your air conditioner smells like feet, it could be because of a buildup of bacteria or fungus in the system. When moisture accumulates inside the unit, it can establish an environment that is favorable to the growth of bacteria and fungus. This can cause a nasty odor that is often described as smelling like feet.

Another potential explanation for the smell may be a dirty air filter. When the air filter becomes filled with dirt, dust and other particles, it can cause substandard air quality and a musty smell that resembles feet.

To fix this unpleasant situation, 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 replace the air filter on a regular basis to ensure good air quality and prevent the development of bacteria and fungus.

The Air Conditioning Smells Like Rotten Eggs

If your air conditioning equipment stinks like rotten eggs, it could be because of 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 can be extremely dangerous and requires immediate attention. If you suspect a gas leak, turn off your air conditioning system, immediately open windows and doors to air out the area, make everyone leave the building and call your gas company or emergency services right away.

The Air Conditioning Smells Like Mildew

If your AC smells like mildew, it might be due to a collection of moisture inside the unit. When moisture forms inside a cooling system, it can foster the growth of mold and mildew. This can cause a musty odor that resembles mildew.

Another possible cause of the smell could be a soiled air filter. Once the air filter becomes clogged, it can cause poor air quality and a musty smell that resembles mildew.

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

My Air Conditioner Smells Like Urine

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

If your air conditioning stinks like urine, it could be traced back to a number of things. One potential cause is a collection of bacteria or mold in the air conditioning system. This can happen if moisture accumulates in the system and creates a wet environment that can promote bacterial growth. The bacteria can create a foul odor that is like urine.

Another possible cause of the smell could be a plugged drain line. The condensation that forms inside the air conditioning unit needs to drain away correctly, but if the drain line becomes filled with debris, it can cause water to back up and accumulate inside the unit. This can generate a musty smell that resembles urine.

My Air Conditioner Smells Like Burning Plastic

If your air conditioner smells like burning plastic, this could indicate an electrical issue with the unit. After a while, the electrical components in the air conditioning system can wear out or break, which can create a burning smell that resembles plastic.

Another possible root cause of the smell could be a foreign object stuck in the unit. If something foreign gets stuck in the air conditioning system, it can become hot and emit a smell that reminds people of burning plastic.

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

My Air Conditioner Smells Like Gas

If your air conditioning smells like gas, there could be a natural gas leak in the unit or in the surrounding area. Natural gas has a recognizable aroma, often described as smelling of rotten eggs or sulfur. That’s because a smell is incorporated into natural gas so that it is easily detectable.

As stated before, a natural gas leak can be VERY harmful and needs immediate attention. If you suspect a gas leak, turn off your air conditioning system, open windows and doors to air out the home, evacuate the building and contact your gas company or emergency services right away.

My Air Conditioner Smells Like Fish

Should your air conditioning equipment smell like fish, it could be due to a build-up of bacteria or mold in the unit. Moisture produces an environment that fosters the growth of bacteria and mold. This can cause a disgusting odor that is often described as smelling like fish or, as mentioned earlier, it also can result in a smell like dirty feet.

Another potential cause of the smell could be a dead animal or other biological material stuck in the air conditioning system. This often can happen if an animal such as a mouse or bird becomes trapped inside the unit and dies.

To solve the issue, it’s worthwhile to have a professional check out and clean your cooling system. They can identify the source of the smell and take the proper steps to remove any contaminants and stop the problem from recurring.

The Air Conditioning Smells Like Vinegar

There could be multiple reasons your air conditioner smells like vinegar. One possible cause is a plugged air filter. One other possible cause of the smell could be a refrigerant leak. When the refrigerant leaks, it can create a chemical odor that is described as smelling of vinegar.

To fix the issue, it’s beneficial to have a skilled specialist look at and clean your air conditioning.  If the odor persists after the cleaning and replacing of the air filter, it’s best to reach back out to a professional to find and repair any persistent issues with your air conditioning. Or, they can tell you if your air conditioning should be replaced.

If you are wanting to upgrade, Bishop Heating & Air Conditioning can help find the ideal unit to fit your home’s needs. We deliver dependable, professional air conditioner installation in Bishop.

Your AC Smells Like Chemicals

If the smell of chemicals is coming out of your air conditioner, it could be due to a refrigerant leak. In a situation where the refrigerant leaks, it can create a chemical scent that is often described as smelling like chemicals or paint thinner, vinegar or acetone.

One other possible reason for the smell could be problems with the electrical wiring or parts inside the air conditioning system. This can cause a burning smell that resembles chemicals or burning plastic.

If you believe there is a refrigerant leak or an electrical issue, it’s important to shut down your air conditioning system right away and contact a professional to inspect and repair the unit. Refrigerant leaks can be harmful and may require immediate attention to avoid injury or damage to your residence.

Weird Smells Coming from Your Cooling? Call the Pros at Bishop Heating & Air Conditioning

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