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Can Mold Grow in My AC?

When most homeowners think about mold, they picture damp basements or bathroom corners—places where moisture collects and stays trapped. However, did you know that your air conditioner can also be an ideal breeding ground for mold? Unfortunately, when you have an AC growing mold in Las Vegas, NV, it doesn’t just stay there—it can spread mold spores throughout your entire home every time the system kicks on.

How Mold Grows Inside Your AC

Your air conditioning system naturally removes moisture from the air as part of its cooling process. That moisture typically drains away through the condensate line. But if there’s any blockage, leak, or excess humidity, stagnant water can accumulate inside the system’s components—especially in the evaporator coil, drain pan, or ductwork. Warm temperatures, dark spaces, and lingering moisture create the perfect conditions for mold growth.

Once mold starts growing inside your AC, it can spread quickly. You might notice a musty odor coming from your vents or see visible mold around the air registers. Worse, these mold spores can circulate through your ductwork and be inhaled by you and your family.

The Impact on Indoor Air Quality

Mold in your AC is more than just an inconvenience—it’s a health hazard. Breathing in mold spores can worsen allergies, trigger asthma attacks, and cause respiratory irritation, headaches, or fatigue. Children, older adults, and anyone with existing respiratory conditions are especially vulnerable.

Because your AC works hard to circulate air throughout your entire house, it can easily spread mold spores far and wide. That’s why preventing mold inside your AC system is so critical for maintaining a safe, healthy home.

How to Prevent Mold in Your AC

The good news? Mold growth inside your AC is preventable with a few simple steps:

  • Change your air filter regularly. A dirty filter traps moisture and organic particles that mold feeds on. Replace your filter every 1-3 months, depending on use and manufacturer recommendations.
  • Keep the area around your AC clean and dry. Make sure the outdoor unit is free of debris and that your indoor unit is not surrounded by clutter that could block airflow or trap moisture.
  • Use a dehumidifier if needed. If your home has consistently high humidity, a whole-house dehumidifier can help keep moisture levels in check, making it harder for mold to thrive.
  • Schedule annual professional maintenance. This is the most important step you can take. A professional tune-up includes a thorough inspection and cleaning of your AC’s key components, including the evaporator coil and condensate drain. Any clogs or leaks will be cleared out, and you’ll know your system is running cleanly and efficiently.

Act Now and Save

If you can’t remember the last time your AC had a professional cleaning, don’t wait—especially during peak cooling season. For a limited time, we’re offering a free diagnostic service (a $79 value) when you schedule your service with us. You’ll get peace of mind knowing your system is mold-free and ready to deliver fresh, clean air all summer long.

Contact us today to book your appointment and breathe easier knowing your home’s air is as healthy as it should be!

When your HVAC system or plumbing isn’t looking so hot, it’s time to get Johnny On the Spot.

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