When your air conditioner starts spewing unusual or funky aromas, it is necessary to take notice because it could be a sign of a significant problem. Disregarding unpleasant smells coming from your cooling system 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 could be bacteria or fungus in the system. Other times, it could also signal something mechanically wrong with the air conditioning system. Some smells are even indicative of an unsafe situation, including a natural gas leak.

At J & J Air Conditioning, we have a nose for these sorts of things. If you smell something weird coming from your AC, there's a good chance our team of qualified specialists has smelled it, too—and fixed it! We’ve earned our reputation as the premier company for air conditioning repair in Eastland.

What does a certain smell billowing from your cooling system mean? Here are some common air conditioner odors and what they might mean:

My Air Conditioner Smells Like Feet

If your air conditioner smells like feet, it may be because of a buildup of bacteria or fungus inside of it. When moisture collects inside the unit, it can establish an environment that is beneficial to the spread of bacteria and fungus. This can cause a bad odor that is often described as smelling like stinky feet.

Another possible cause of the stench of dirty feet could be a dirty air filter. If an air filter becomes choked with dirt, dust and other contaminants, it can cause low air quality and a musty smell that resembles feet.

To solve 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 change the air filter on a regular basis to promote good air quality and restrict the growth of bacteria and fungus.

Your AC Smells Like Rotten Eggs

If your air conditioner smells like rotten eggs, it could be caused by 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, that is 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 ventilate the area, get everyone out of the building and call your gas company or emergency services immediately.

Your AC Smells Like Mildew

If your AC emits a smell like mildew, it might be due to a accumulation of moisture inside the unit. When moisture collects inside the air conditioning system, it can cultivate the growth of mold and mildew. This can cause a musty smell that bears a resemblance to mildew.

Another possible reason for the smell might be a clogged air filter. Once the air filter becomes clogged, it can result in poor air quality and a musty smell that has a resemblance to mildew.

Annual air conditioning maintenance from J & J Air Conditioning can help protect against both of these situations, because a good cleaning, inspection and filter change is a very good way to keep your system running at its best!

My Air Conditioner Smells Like Urine

One of the most unpleasant things is when the air coming out of your HVAC system smells like urine.

If your air conditioner reeks of urine, it could could be caused by multiple factors. One possible cause is a buildup of bacteria or mold in the your cooling system. This can happen when moisture accumulates in the system and creates a wet environment that is conducive to bacterial growth. The bacteria can produce a foul odor that some people describe as smelling like urine.

Another feasible cause of the smell 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 clogged with debris, it can cause water to back up and collect inside the unit. This can create a musty smell that can stink like urine.

My Air Conditioner Smells Like Burning Plastic

If your AC smells like burning plastic, a possible cause could be an electrical problem with the unit. After a while, the electrical parts in the air conditioning system can wear out or break, which can create a burning smell that resembles plastic.

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

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

Your AC Smells Like Gas

If your AC smells like gas, there could be a natural gas leak in the unit or in the surrounding area. Natural gas has a distinct odor, often described as smelling similar to rotten eggs or sulfur. That’s because this scent is incorporated into natural gas to make it easily detectable.

As we said previously, a natural gas leak can be VERY dangerous and requires immediate attention. If you suspect a gas leak, turn off your air conditioning system, open windows and doors to air out the home, leave the building and call your gas company or emergency services straight away.

Your AC Smells Like Fish

When your air conditioning equipment smell like fish, it could be due to a build-up of bacteria or mold in the unit. Moisture creates an environment that promotes the growth of bacteria and mold. This can cause a foul odor that can be 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 stuck in the air conditioning system. This often can happen if an animal such as a mouse or bird gets 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 can find the source of the smell and take the proper steps to remove any contaminants and stop the problem from recurring.

Why My Air Conditioner Smells Like Vinegar

There could be numerous reasons your air conditioner smells like vinegar. One possible cause might be a clogged air filter. A second possible cause of the smell could be a refrigerant leak. If the refrigerant leaks, it can create a chemical odor that resembles vinegar.

To fix the issue, it's important 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 persistent issues with your air conditioning. Or, they can tell you if your air conditioning ought to be replaced.

If you are planning to upgrade, J & J Air Conditioning can help locate the right unit to fit your home’s needs. We offer reliable, skilled air conditioner installation in Eastland.

My Air Conditioner 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 odor that people sometimes describe as smelling like chemicals or paint thinner, vinegar or acetone.

An additional possible source of 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 is like chemicals or burning plastic.

If you think your system has 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 harmful and may require immediate attention to prevent injury or damage to your residence.

A Nasty Odor Coming from Your Cooling? Call the Pros at J & J Air Conditioning

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