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 comfortable in our homes. But when you start to experience unpleasant odors coming from your cooling system, it’s more than just irritating. It can greatly affect 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 tackle yourself.

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

Just like anything in your indoor space, if your air conditioner isn’t cleaned correctly 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 occur with the coils, drain pain, air ducts or even your filter. Thankfully, routine maintenance can help prevent this buildup and reduce the chances that an unfriendly smell starts diffusing throughout your space.

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

It’s also possible that a tiny creature 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 common culprit for air conditioner odors. If it’s been a long time since you’ve swapped your air filter, replace it with a brand new one. We typically advise changing your filter every few months. But it’s also vital to keep in mind other factors that would require you to replace it more repeatedly, such as pets in the home or if a family member has allergies or asthma.

If you’ve replaced the filter and it’s not making a difference, it’s probably time to reach out for some help. Especially if it’s been an extended period of time since your last air conditioning inspection. Technicians can review the situation to see if a thorough cleaning can do the job. You could 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, Morgner Inc. Air Conditioning & Heating can help you review 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 undesirable odors. You can schedule an appointment with us online or give us a shout at 314-262-4541.

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