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

Depending on the cause of the odor, the root of the problem might be bacteria or fungus in the system. Other times, it could also signal something mechanically wrong with the AC. Some smells are a sign of a dangerous problem, such as a natural gas leak.

At Stieferman Heating Company Inc, we have a nose for these sorts of things. If you smell something odd coming from your AC, you can bet that our team of qualified pros has smelled it, too—and fixed it! We’ve earned our reputation as the first call for air conditioning repair in Jefferson City.

What does a specific odor coming out of your air conditioning mean? Here are some typical air conditioner smells and what they might mean:

The Air Conditioning 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 collects inside the unit, it can create an environment that is conducive to the development of bacteria and fungus. This can produce a bad odor that is often described as smelling like stinky feet.

Another likely explanation for an odor of stinky feet might be a dirty air filter. When your HVAC system’s air filter becomes clogged with dirt, dust and other debris, it can lead to substandard 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 on a regular basis to promote good air quality and restrict the development of bacteria and fungus.

The Air Conditioning Smells Like Rotten Eggs

If your air conditioning equipment stinks like rotten eggs, it may be because of a natural gas leak in the unit or in the surrounding area. Natural gas has a distinctive 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 ventilate the area, evacuate the building and call your gas company or emergency services right away.

Your AC Smells Like Mildew

If your cooling system smells like mildew, it could 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 bears a resemblance to mildew.

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

Routine air conditioning maintenance from Stieferman Heating Company Inc can help prevent both of these issues, because a good cleaning, inspection and filter change is a great way to keep your system working at its best!

The Air Conditioning Smells Like Urine

One of the most undesirable things is when an air conditioner smells like urine.

If your air conditioning equipment reeks of urine, it could be due to a variety of factors. One potential cause is a accumulation of bacteria or mold in the your cooling system. This can happen if moisture accumulates in the system and creates a damp environment that is conducive to bacterial growth. The bacteria can emit a foul odor that it similar to urine.

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

The Air Conditioning Smells Like Burning Plastic

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

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

If you notice something that smells like burning plastic coming from your AC unit, it’s essential to phone a professional right away.

The Air Conditioning Smells Like Gas

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

As stated previously, a natural gas leak can be VERY hazardous and requires immediate attention. When you suspect a gas leak, turn off your air conditioning system, open windows and doors to air out the home, get everyone out of the building and contact your gas company or emergency services straight away.

The Air Conditioning Smells Like Fish

Should your air conditioner smell like fish, this could be a sign of a build-up of bacteria or mold in the unit. Moisture creates 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 possible cause of the smell could be a dead animal or other biological material trapped 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 fix the issue, it’s important to have a professional examine and clean your cooling system. They should be able to identify the source of the smell and take the appropriate steps to remove any contaminants and stop the problem from recurring.

My Air Conditioner Smells Like Vinegar

There could be numerous reasons an AC smells like vinegar. One possible cause is a plugged air filter. Another possible cause of the smell might be a refrigerant leak. If the refrigerant leaks, it can make 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 continues after the cleaning and changing 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, the tech can tell you if your air conditioning needs to be replaced.

If you are planning to upgrade, Stieferman Heating Company Inc can help locate the ideal unit to fit your home’s needs. We offer trustworthy, expert air conditioner installation in Jefferson City.

My Air Conditioner Smells Like Chemicals

If the smell of chemicals is emitting out of your air conditioner, it could be caused by a refrigerant leak. In a situation where the refrigerant leaks, it can create a chemical odor that people sometimes describe as smelling like chemicals or paint thinner, vinegar or acetone.

One other possible reason for the smell could be something wrong with the electrical wiring or hardware inside the air conditioning system. This can result in a burning smell that resembles chemicals or burning plastic.

If you believe there is a refrigerant leak or an electrical problem, it’s important to shut off 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 protect against injury or damage to your home.

Weird Smells Coming from the Air Conditioning? Contact the Experts at Stieferman Heating Company Inc

If your air conditioner smells nasty and you aren’t able to fix it quickly on your own, call the cooling professionals at Stieferman Heating Company Inc. We have lots of experience working with a wide variety of AC systems. Our crew has fixed a multitude of air conditioning troubles through the years—including funky smells. Call us today for quality AC repair in Jefferson City!