If You Notice This When Your Heat Turns On, Call Your Doctor Immediately

With temperatures continuing to drop, you may be eager to turn your heat on for the first time this season. And while there are few things more pleasant than returning after a long, cold day to a nice, warm home, your heating system could be the source of serious problems, too. In fact, experts say that if you notice one particular thing when you turn on your heat, it's time to get checked out by your doctor immediately. Read on to discover how to spot a problem and what it could mean for your wellbeing.

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Call your doctor if you notice that you cough or wheeze when your heat turns on.

Many people experience allergies in autumn, thanks to pollen and mold from decaying leaves. But if your symptoms—coughing, wheezing, and sneezing, in particular—tend to coincide with when your heating system turns on for the season, experts say it may be due to mold that's circulating within your home.

"This is the time of year my phone starts to ring off the hook," Jeffrey C. May, principal of J. May Home Inspections and author of My House Is Killing Me: The Home Guide for Families with Allergies and Asthma, tells The New York Times. May explains that many homes provide ideal conditions for mold spores to grow, including its three main requirements—oxygen, moisture, and a food source. "Most people don't even know they have a problem until they start getting sick," he added.

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A number of additional symptoms may be related to a mold problem.

Household mold can cause a range of health issues besides coughing, wheezing, and sneezing. You may also experience a runny nose or congestion, itchy eyes, skin rash, sore throat, headache, and more.

"Some people, such as those with allergies to molds or with asthma, may have more intense reactions," explains the Centers for Disease Control and Prevention (CDC). "Severe reactions may include fever and shortness of breath," their experts add.

One particular part of your HVAC system should be checked to identify a problem.

Mold can grow inside the ducts of your heating system, but May tells the Times that you're most likely to find it inside the coil and fiberglass lining of your HVAC unit. That's because these areas are most likely to collect dust and are easily exposed to moisture. "I've seen coil linings that were completely infiltrated by mold," says May.

Depending on the state of your HVAC unit, individual parts may need to be cleaned or replaced to fix the problem.

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And don't forget to check other problem areas in the home.

If your symptoms persist after your HVAC system has been given the all-clear, it may be time to inspect the rest of your home for mold and address any problem areas you find. In particular, the CDC recommends controlling humidity levels, fixing leaky roofs, windows, and pipes, cleaning and drying after any flooding incidents, and properly ventilating high-humidity areas, such as your bathroom, laundry space, and kitchen.

Additionally, it pays to be thoughtful about the many ways that mold can infiltrate your space in the first place. "Mold can enter your home through open doorways, windows, vents, and heating and air conditioning systems. Mold in the air outside can also attach itself to clothing, shoes, and pets and can be carried indoors," explains the CDC. They recommend checking for mold in the most highly susceptible materials of your home. "Wallpaper, insulation materials, drywall, carpet, fabric, and upholstery, commonly support mold growth," the health authority notes.

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