When your air conditioner starts putting out odd or unappealing aromas, it is important to take notice because it could be a sign of a significant problem. Disregarding unpleasant smells coming from your air conditioning may 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 could be bacteria or fungus in the system. Other times, it could also indicate something mechanically wrong with the AC. Some smells are a sign of a dangerous scenario, such as a natural gas leak.

At Marios Air Conditioning, we are experienced at getting to the root cause of stinky smells. If you smell something weird coming from your air conditioner, you can bet that our team of qualified specialists has smelled it, too—and fixed it! We’ve earned the reputation as the premier company for air conditioning repair in Thousand Palms.

What does a certain smell coming from your AC mean? Here are several common air conditioner odors and what they may mean:

Your AC Smells Like Feet

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

Another likely explanation for the stench of dirty feet might be a dirty air filter. When the air filter becomes filled with dirt, dust and other debris, it can cause low air quality and a musty smell that bears a resemblance to feet.

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

The Air Conditioning Smells Like Rotten Eggs

If your smells like rotten eggs, it could be due to 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 extremely 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 at once.

Your AC Smells Like Mildew

If your AC emits a smell like mildew, it may be due to a accumulation of moisture inside the unit. When moisture accumulates inside an air conditioner, it can promote the growth of mold and mildew. This can cause a musty stench that resembles mildew.

Another possible cause of the smell might be a soiled air filter. Once the air filter becomes clogged, it can lead to poor air quality and a musty smell that has a resemblance to mildew.

Regular air conditioning maintenance from Marios Air Conditioning can help prevent both of these problems, because a good cleaning, inspection and filter change is a very good way to keep your system working at its best!

My Air Conditioner Smells Like Urine

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

If your air conditioning equipment smells like urine, it could be traced back to a number of things. One possible cause is a collection of bacteria or mold in the your HVAC. This can happen in the event that moisture accumulates in the system and creates a moist environment that is conducive to bacterial growth. The bacteria can emit a foul odor that resembles urine.

Another possible cause of the scent of urine 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 build up inside the unit. This can generate a musty smell that can stink like urine.

Your AC Smells Like Burning Plastic

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

Another possible root cause of the smell could be a foreign object that somehow got in the the air conditioner. If something foreign gets trapped in the air conditioning system, it can become hot and result in a smell similar to burning plastic.

If you think you smell burning plastic coming from your cooling system, it’s essential to phone a professional right away.

Your AC Smells Like Gas

If your air conditioner smells like gas, there could be a natural gas leak in the unit or in another part of your home. Natural gas has a distinct odor, often described as smelling like rotten eggs or sulfur. That’s because an odor is put into natural gas so that it is easily detectable.

As stated earlier, a natural gas leak can be VERY dangerous and needs immediate attention. Should 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 as soon as possible.

Your AC Smells Like Fish

If your air conditioning equipment smell like fish, you may have a situation where there's a build-up of bacteria or mold in the unit. Moisture produces an environment that is conducive to the growth of bacteria and mold. This can cause a strong odor that can be 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 trapped within 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 often necessary 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 a home's AC smells like vinegar. One possible cause might be a dirty air filter. A second possible cause of the smell might be a refrigerant leak. When the refrigerant leaks, it can generate a chemical odor that resembles vinegar.

To fix the issue, it's essential to have a skilled specialist look at 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 identify and repair any hidden issues with your air conditioning. Or, the mechanic can tell you if your air conditioning needs to be replaced.

If you are wanting to upgrade, Marios Air Conditioning can help locate the correct unit to fit your home’s needs. We provide reliable, expert air conditioner installation in Thousand Palms.

Your AC Smells Like Chemicals

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

Another possible reason for the smell could be an issue with the electrical wiring or elements 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 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 house.

A Nasty Odor Coming from the Air Conditioning? Contact the Experts at Marios Air Conditioning

If your air conditioner reeks and you aren’t able to fix it easily on your own, contact the cooling experts at Marios Air Conditioning. We have years of experience working with a wide variety of cooling systems. Our crew has fixed a multitude of air conditioning troubles through the years—including weird smells. Call us today for quality AC repair in Thousand Palms!