When your air conditioner starts putting out odd or funky aromas, it is important to take notice because it could be a sign of a significant problem. Dismissing 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 root of the problem may be bacteria or fungus in the system. In other cases, it could also sign something mechanically wrong with the AC. Some smells are a warning of an unsafe situation, like a natural gas leak.

At J.L. Brady Company LLC, we are experienced at getting to the root cause of stinky smells. If you smell something weird coming from your AC, you can bet that our team of talented professionals has smelled it, too—and fixed it! We’ve earned our reputation as the first call for air conditioning repair in Moline.

What does a specific odor coming out of your air conditioning mean? Here are a few frequent air conditioner odors and what they could mean:

The Air Conditioning Smells Like Feet

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

Another likely cause of an odor of stinky feet might be a dirty air filter. When your HVAC system’s air filter becomes choked with dirt, dust and other particles, it can lead to low air quality and a musty smell that bears a resemblance to feet.

To solve this dilemma, 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 regularly to provide good air quality and restrict the development of bacteria and fungus.

My Air Conditioner Smells Like Rotten Eggs

If your 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 distinct 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 very 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, get everyone out of the building and call your gas company or emergency services right away.

The Air Conditioning Smells Like Mildew

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

Another possible reason for the smell may be a clogged air filter. If the air filter becomes clogged, it can lead to poor air quality and a musty smell that resembles mildew.

Routine air conditioning maintenance from J.L. Brady Company LLC can help avoid both of these problems, because a good cleaning, inspection and filter change is a great way to keep your system running at its best!

My Air Conditioner Smells Like Urine

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

If your air conditioning equipment stinks like urine, it could be due to a variety of factors. One possible cause is a buildup of bacteria or mold in the your HVAC. This can happen in the event that moisture accumulates in the system and creates a wet environment that can promote bacterial growth. The bacteria can produce a foul odor that it similar to urine.

Another possible cause of the smell could be a blocked drain line. The condensation that forms inside the air conditioning unit needs to drain away effectively, but if the drain line becomes choked with debris, it can cause water to back up and accumulate inside the unit. This can generate a musty smell that is sometimes described as smelling of urine.

The Air Conditioning Smells Like Burning Plastic

If your AC smells like burning plastic, a possible cause could be an electrical issue with the unit. After some time, the electrical elements in the air conditioning system can wear out or bust, which can make a burning smell that resembles plastic.

Another possible root cause of the smell could be a foreign object stuck in the the air conditioner. If something foreign gets caught in the air conditioning system, it can heat up 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 worthwhile to call a professional right away.

Your AC 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 recognizable smell, often described as smelling similar to rotten eggs or sulfur. That’s because a smell is put into natural gas so that it is easily detectable.

As we said before, a natural gas leak can be VERY dangerous and calls for immediate attention. When 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 straight away.

Why My Air Conditioner Smells Like Fish

When 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 causes an environment that fosters the growth of bacteria and mold. This can cause a foul odor that is often described as smelling like fish or, as mentioned earlier, it also can cause 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 often necessary to have a professional inspect and clean your air conditioning 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.

Why My Air Conditioner Smells Like Vinegar

There could be numerous reasons a home’s air conditioning system smells like vinegar. One possible cause is a plugged air filter. A second potential cause of the smell may be a refrigerant leak. When the refrigerant leaks, it can make a chemical odor that is similar to vinegar.

To fix the issue, it’s beneficial to have a skilled specialist 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 identify and repair any underlying issues with your air conditioning. Or, they can tell you if your air conditioning should be replaced.

If you are wanting to upgrade, J.L. Brady Company LLC can help select the correct unit to fit your home’s needs. We provide dependable, professional air conditioner installation in Moline.

The Air Conditioning Smells Like Chemicals

If the smell of chemicals is coming out of your air conditioner, it could be the result of a refrigerant leak. When the refrigerant leaks, it can create a chemical aroma that is often described as smelling like chemicals or paint thinner, vinegar or acetone.

An additional possible cause of the smell could be an issue with the electrical wiring or hardware inside the air conditioning system. This can cause a burning smell that is like chemicals or burning plastic.

If you believe there is a refrigerant leak or an electrical concern, it’s important to shut down 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.

A Nasty Odor Coming from Your AC? Call the Pros at J.L. Brady Company LLC

If your air conditioner reeks and you aren’t able to fix it easily on your own, call the cooling specialists at J.L. Brady Company LLC. We have years of experience working with a wide variety of HVAC systems. Our crew has fixed a multitude of air conditioning problems over the years—including strange smells. Call us today for quality AC repair in Moline!