When your air conditioner starts emitting strange or gross 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 AC or even pose a risk to your health and safety.

Depending on the cause of the odor, the cause could be bacteria or fungus in the system. In other cases, it could also indicate something mechanically wrong with the air conditioner. Some smells are a sign of a dangerous situation, like a natural gas leak.

At Premium Air Services LLC, we are skilled at diagnosing and fixing these type of problems. If you smell something odd coming from your AC, you can bet that our team of skilled specialists has smelled it, too—and fixed it! We’ve earned the reputation as the first call for air conditioning repair in Tomball.

What does a certain smell coming out of your AC mean? Here are a few typical air conditioner smells and what they may mean:

My Air Conditioner Smells Like Feet

If your air conditioner smells like feet, it may be due to a buildup of bacteria or fungus inside of it. When moisture builds inside the unit, it can produce 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 potential reason for an odor of stinky feet could be a dirty air filter. If an air filter becomes choked with dirt, dust and other particles, it can cause poor air quality and a musty smell that it similar to the smell of feet.

To fix 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 routinely to promote good air quality and prevent the growth of bacteria and fungus.

Your AC Smells Like Rotten Eggs

If your reeks of rotten eggs, it could be caused by 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 because of a substance added to it to make it easily detectable.

A natural gas leak can be 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 right away.

My Air Conditioner Smells Like Mildew

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

Another possible cause of the smell could be a soiled air filter. If the air filter becomes clogged, it can result in poor air quality and a musty smell that has a resemblance to mildew.

Regular air conditioning maintenance from Premium Air Services LLC can help protect against both of these situations, because a good cleaning, inspection and filter change is a terrific way to keep your system running at its best!

Your AC Smells Like Urine

One of the most unpleasant scenarios is when an air conditioner smells like urine.

If your air conditioning smells like urine, it could be due to a variety of factors. One possible cause is a accumulation of bacteria or mold in the air conditioning system. This can happen if moisture accumulates in the system and creates a moist environment that is conducive to bacterial growth. The bacteria can produce a foul odor that resembles urine.

Another potential cause of the smell could be a clogged drain line. The condensation that forms inside the air conditioning unit needs to drain away effectively, but if the drain line becomes stopped up by debris, it can cause water to back up and build up inside the unit. This can produce a musty smell that can stink like urine.

My Air Conditioner Smells Like Burning Plastic

If your air conditioner smells like burning plastic, this could indicate an electrical concern with the unit. After a while, the electrical parts in the air conditioning system can wear out or malfunction, which can create a burning smell that resembles plastic.

Another possible cause of the smell could be a foreign object stuck in the the air conditioner. If something foreign gets stuck in the air conditioning system, it can heat up and result in a smell like burning plastic.

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

My Air Conditioner Smells Like Gas

If your AC smells like gas, it could be because of a natural gas leak in the unit or in the surrounding area. Natural gas has a distinct aroma, often described as smelling similar to rotten eggs or sulfur. That’s because this scent is put into natural gas to make it 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, leave the building and call your gas company or emergency services right away.

Your AC Smells Like Fish

When 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 causes an environment that is conducive to the growth of bacteria and mold. This can cause a strong odor that is often described as smelling like fish or, as mentioned earlier, it also can create a smell like dirty feet.

Another plausible explanation for the smell could be a dead animal or other biological material stuck within the air conditioning system. This often is possible if an animal such as a mouse or bird gets trapped inside the unit and dies.

To fix the issue, it's worthwhile to have a professional check out and clean your air conditioning system. They can determine the source of the smell and take the appropriate steps to remove any contaminants and keep the problem from recurring.

The Air Conditioning Smells Like Vinegar

There could be several reasons your air conditioner smells like vinegar. One possible cause of the smell could be a clogged air filter. Another potential cause of the smell could be a refrigerant leak. When the refrigerant leaks, it can generate a chemical odor that resembles vinegar.

To fix the issue, it's beneficial to have a skilled mechanic inspect and clean your air conditioning.  If the odor continues after the cleaning and exchanging the air filter, it's best to reach back out to a professional to diagnose and repair any hidden issues with your air conditioning. Or, the mechanic can tell you if your air conditioning should be replaced.

If you are planning to upgrade, Premium Air Services LLC can help locate the ideal unit to fit your home’s needs. We offer trustworthy, skilled air conditioner installation in Tomball.

My Air Conditioner Smells Like Chemicals

If the smell of chemicals is emitting out of your air conditioning equipment, it could be the result of a refrigerant leak. If the refrigerant leaks, it can create a chemical aroma that people sometimes describe as smelling like chemicals or paint thinner, vinegar or acetone.

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

If you believe there is a refrigerant leak or an electrical problem, it's important to shut down your air conditioning system immediately and contact a professional to inspect and repair the unit. Refrigerant leaks can be hazardous 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 Premium Air Services LLC

If your air conditioner reeks and you aren’t able to fix it quickly on your own, reach out to the cooling professionals at Premium Air Services LLC. We have years of experience working with a wide variety of cooling systems. Our crew has fixed many air conditioning problems through the years—including funky smells. Call us today for quality AC repair in Tomball!