Mold growth in Florida is a year-round concern, including in the cooler months when you might least expect it. Florida has a unique and complex climate, characterized by high temperatures and high humidity, which create ideal conditions for mold growth. Because of this, Florida residents should be aware of mold growth and how to prevent it to keep their families healthy and safe, even during the winter months.
About Mold Growth in Florida Winter Months
It might be unexpected to think about mold growth in Florida during the winter months, but the truth is, there is still a high chance of mold growth due to the high humidity that persists year-round. Not only that, but air conditioning plays a massive role in dehumidifying your home. In the winter months, the AC runs much less, allowing moisture to accumulate. The stagnant air means fewer dry cycles, and mold tends to thrive when the system isn’t circulating, which is much more often in the winter months. In addition, the temperature in Florida falls within a range that is ideal for mold growth (60-80 degrees), and the coils and drip pans on AC units are moisture-rich, which encourages mold growth.
Signs of Mold Growth in AC Units
Knowing the signs of mold growth in AC units can help you address the problem before it worsens and spreads. As a Florida homeowner, there are a few signs to look for that can help you recognize early indicators and call an expert before the situation worsens and causes additional issues.
Musty or Damp Odors
The first sign many homeowners notice is a musty, damp, or “dirty sock” odor coming through the vents, typically when the AC first turns on. This smell can spread to multiple rooms in your home, and it usually disappears when the system stops running. Some homeowners have described their home as smelling like a “wet dog,” “damp towel”, or “basement-like” when they are dealing with untreated growth in their unit.
Increase in Respiratory Symptoms
Mold spores can be very irritating to the respiratory system, and because the AC unit circulates air consistently, it blows them around and spreads them. This can lead to you and your family inhaling it, causing symptoms such as excessive sneezing, coughing, and a runny nose; itchy eyes; chronic headache; skin irritation; and increased asthma symptoms. If you’re experiencing these symptoms and they often improve when you leave the home, this could indicate a mold problem.
Build Up or Spots Around Vents
Because the mold spores are inside the vents, when the AC turns on, they are blown through the vents and land outside, causing buildup. If you notice dark grey dust collecting around vent edges, streaks on vent covers, or speckled black, green, or brown dots, this may indicate mold growth. Often, this buildup can be chalked up to everyday dust or dirt, but mold dust tends to look more patchy and even damp in texture.
Visible Mold on AC Components
The central AC components that will be affected by mold are the evaporator coil and drop pan. If you notice black or green patches, a slimy film, white fuzzy growth, or discolored metal, these are signs of mold growth in the moisture-prone environment of your AC unit.
Excess Condensation
If you notice any water or extra condensation accumulating around the AC system, this is a red flag that shouldn’t be ignored. Signs can include an overflowing drip pan, moisture around the indoor unit, or condensation on the refrigerant lines.
What Causes Mold Growth in AC Units?
We have touched on why mold growth is an issue in Florida in the winter months, but why does it grow in AC units? Ultimately, AC units create a perfect breeding ground for mold growth, so it’s essential to understand the causes.
-
Indoor Humidity: High indoor humidity can create a moist environment, making mold growth easier to accumulate. With AC units running less during the winter months, indoor moisture can increase, leading to more mold growth.
-
Clogged Air Filters: If your air filters are clogged or dirty, they can reduce airflow and trap moisture, creating a breeding ground for mold.
-
Dirty Evaporator Coils: Dust and moisture create an ideal environment for mold growth, and AC unit evaporator coils are the primary culprit.
-
Poor Ventilation: If you have inadequate ventilation in the home, attic, or basement, it can trap moisture and pull it into the common areas of your home.
How to Prevent Mold Growth in Your Home
We’re going to give you our top tips for preventing mold growth in your home, with actionable steps you can take.
Keep Humidity Below 50%
If your AC unit has a “dry mode” or a dehumidifier, use it to keep humidity low and slow mold growth, preventing a breeding ground for it.
Run AC Periodically
Even during the winter months, when you might not be running your AC unit as often, it’s essential to keep the air circulating to prevent moisture buildup. Your AC doesn’t have to run for long; just 10 to 15 minutes a couple of times a week should suffice.
Change Air Filters Regularly
You should change your air filters regularly to prevent buildup and maintain consistent airflow throughout your home. Air filters typically indicate replacement intervals of 30 to 60 days. Investing in a high-MERV option to capture smaller particles is also a good idea, as it can help capture mold spores and other dust particles.
Seal Leaks Around Windows
Sometimes, humidity can seep in through tiny gaps around the window, so preventing it is essential to keep indoor humidity in check. Ultimately, you can do this by sealing the leaks around windows and doors.
Call a Professional for Assistance
If you are a homeowner in Florida, it’s crucial to understand how to spot mold growth and when to seek professional help from All Year Cooling and Plumbing. If you notice any signs of mold growth in your home, it’s essential to contact a professional to identify the root cause. A professional can help remove the mold, mildew, and debris, and flush lines to prevent growth buildup. A professional can also perform a comprehensive inspection of your ductwork and sealing to ensure there are no underlying issues you may not be seeing. After calling a professional, it’s crucial to develop a year-round protection plan to keep your home safe from mold growth and to ensure efficiency and system longevity. Contact All Year Cooling and Plumbing if you are a Florida resident and notice any signs of mold growth in your AC system.