Woman wondering why her AC is acting up

Why does it smell bad when my air conditioner runs?

The majority of us install air conditioners to help us feel cool in our homes. But when you start to observe unpleasant odors coming from your cooling system, it’s more than just annoying. It can greatly affect your home comfort.

Where do the smells come from?

Begin with what the odor smells like. If the odor resembles a rotten egg, this could be a indication 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 are likely experiencing 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 front and center, cleaning them can often go overlooked.

Buildup of mold, dirt and other particles is one of the more typical culprits of odor with air conditioners. It can occur with the coils, drain pain, air ducts or even your filter. Luckily, ongoing maintenance can help avoid this buildup and reduce the probability that an unfriendly smell starts diffusing throughout your home.

Heat and moisture can contribute to increased mold growth, particularly in warmer climates. Not only can mold and mildew develop 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?

Analyze 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, try replacing it with a brand new one. We typically advise changing your filter every three months. But it’s also key to keep in mind other elements 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 switched the filter and it’s not reducing the smell, it’s probably time to contact a professional. Especially if it’s been an lengthy period of time since your last air conditioning examination. They can assess the situation to see if a thorough cleaning can do the job. You might consider having your air ducts cleaned. Professional duct cleaners can take a look to see if your indoor air quality would improve from a proper cleaning.

If you have concerns about the odors in your home, Mighty Ducts can help you review the situation and discuss possible solutions. You should be able to enjoy your cool indoor space during the warmer summer months, without having to suffer with undesirable odors. You can arrange an appointment with our experts online or give us a shout at 714-464-3376.

Back To Blog