When your air conditioner starts spewing weird or gross smells, it is a good idea to take notice because it could be a sign of a significant problem. Dismissing unpleasant smells coming from your air conditioning may lead to serious damage to your air conditioning or even pose a risk to your health and safety.

Depending on what you’re smelling, the culprit might be bacteria or fungus in the system. In other cases, it could also signal something mechanically wrong with the air conditioner. Some smells are a sign of a dangerous situation, including a natural gas leak.

At Luikart Heating & Cooling, we have a nose for these sorts of things. If you smell something odd coming from your cooling system, chances are our team of qualified professionals has smelled it, too—and fixed it! We’ve earned our reputation as the premier company for air conditioning repair in Newark.

What does a particular smell billowing out of your cooling system mean? Here are some typical air conditioner aromas and what they may mean:

My Air Conditioner Smells Like Feet

If your air conditioner smells like feet, it can be due to a buildup of bacteria or fungus in the system. When moisture collects inside the unit, it can establish an environment that is favorable to the development of bacteria and fungus. This can result in a bad odor that is often described as smelling like dirty feet.

Another potential explanation for an odor of stinky feet could be a dirty air filter. When the air filter becomes filled with dirt, dust and other debris, it can cause poor air quality and a musty smell that resembles feet.

To correct this problem, it’s important to have a quality service tech 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 routinely to promote good air quality and prevent the growth of bacteria and fungus.

The Air Conditioning Smells Like Rotten Eggs

If your air conditioning equipment smells like rotten eggs, it might be the result of a natural gas leak in the unit or in the surrounding area. Natural gas has a unique odor, often described as smelling like rotten eggs or sulfur, which is because of a substance added to it to make it easily detectable.

A natural gas leak is a situation that 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, get everyone out of the building and call your gas company or emergency services immediately.

My Air Conditioner Smells Like Mildew

If your air conditioner smells like mildew, it may be due to a buildup of moisture inside the unit. When moisture forms inside an air conditioner, it can promote the growth of mold and mildew. This can cause a musty smell that it similar to mildew.

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

Routine air conditioning maintenance from Luikart Heating & Cooling can help avoid both of these problems, because a good cleaning, inspection and filter change is a terrific way to keep your system working at its best!

The Air Conditioning Smells Like Urine

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

If your air conditioning smells 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 when moisture accumulates in the system and creates a moist environment that favorable for bacterial growth. The bacteria can emit a foul odor that resembles urine.

Another potential 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 stopped up by debris, it can cause water to back up and accumulate inside the unit. This can create a musty smell that can stink like urine.

Your AC Smells Like Burning Plastic

If your air conditioner smells like burning plastic, it might be because of an electrical issue with the unit. After some time, the electrical elements in the air conditioning system can wear out or malfunction, which can create a burning smell that resembles plastic.

Another possible reason for the smell could be a foreign object lodged in the the air conditioner. If something foreign gets stuck in the air conditioning system, it can get hot and cause a smell like burning plastic.

If you smell burning plastic coming from your air conditioner, it’s essential to call a professional right away.

My Air Conditioner 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 distinct aroma, often described as smelling of rotten eggs or sulfur. That’s because this scent is incorporated into natural gas so that it is easily detectable.

As mentioned earlier, a natural gas leak can be VERY hazardous and calls for 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 call your gas company or emergency services right away.

Your AC Smells Like Fish

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

Another possible cause of the smell could be a dead animal or other biological material caught in 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 cooling system. They should be able to find the source of the smell and take the proper steps to remove any contaminants and prevent the problem from recurring.

The Air Conditioning Smells Like Vinegar

There could be several reasons a home’s air conditioner smells like vinegar. One possible cause is a plugged air filter. One other possible cause of the smell might be a refrigerant leak. Sometimes after the refrigerant leaks, it can make a chemical odor that is described as smelling of vinegar.

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

If you are wanting to upgrade, Luikart Heating & Cooling can help find the ideal unit to fit your home’s needs. We offer trustworthy, skilled air conditioner installation in Newark.

The Air Conditioning Smells Like Chemicals

If the smell of chemicals is emitting out of your air conditioning equipment, it could be caused by a refrigerant leak. If 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 cause of the smell could be a problem with the electrical wiring or components inside the air conditioning system. This can cause a burning smell that is like chemicals or burning plastic.

If you suspect a refrigerant leak or an electrical problem, it’s important to turn off your air conditioning system as soon as possible and contact a professional to inspect and repair the unit. Refrigerant leaks can be dangerous and may require immediate attention to protect against injury or damage to your residence.

Strange Smell Coming from the Air Conditioning? Contact the Experts at Luikart Heating & Cooling

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