Woman wondering why her AC is acting up

Why does it smell bad when my air conditioner runs?

We install air conditioners to help us feel cool in our homes. But when you start to experience unpleasant odors coming from your cooling system, it’s more than just bothersome. It can greatly influence your home comfort.

Where do the smells come from?

Start with what the odor smells like. If the odor resembles a rotten egg, this could be a sign of a gas leak. If this is the case, you should open your windows, turn off the gas supply, evacuate the home and call the gas company. Allow the gas company turn it back on for you. It’s not something you want to risk doing on your own.

If it doesn’t smell like rotten eggs, you probably have a different challenge.

Just like anything in your home, if your air conditioner isn’t cleaned properly or taken care of, there’s a good chance that dirt and dust will gather. And because components of your air conditioner aren’t clearly displayed before you, cleaning them can often go overlooked.

Buildup of mold, dirt and other particles is one of the most request reasons you’ll notice odors with air conditioners. It can happen with the coils, drain pain, air ducts or even your filter. Luckily, routine maintenance can help avoid this buildup and reduce the chances that an unfriendly smell starts spreading throughout your house.

Heat and moisture can contribute to increased mold growth, particularly in warmer climates. Not only can mold and mildew induce a nasty smell, but it can also negatively impact the quality of air in your space.

It’s also possible that a small animal navigated into your duct system and died. You can turn off your air conditioner and either give our team or pest control a call to come and retrieve the animal.

What can I do?

Assess your filter. This is a typical culprit for air conditioner odors. If it’s been a long time since you’ve changed your air filter, go ahead and replace it with a brand new one. We typically recommend changing your filter every three months. But it’s also key to keep in mind other factors that would require you to replace it more often, such as pets in the home or if a family member has allergies or asthma.

If you’ve exchanged the filter and it’s not helping, it’s probably time to call in an expert. Especially if it’s been an lengthy period of time since your last air conditioning examination. They can examine the situation to see if a thorough cleaning can do the job. You may also want to consider having your air ducts cleaned. Professional duct cleaners can take a look to see if your indoor air quality would be enhanced from a proper cleaning.

If you have frustrations about the odors in your home, Faust Air Conditioning and Heating can help you take a look at the situation and talk through possible solutions. You should be able to enjoy your cool indoor space during the warmer summer months, without having to suffer with unfavorable odors. You can book an appointment with our experts online or give us a shout at 979-532-2511.

Back To Blog