Houston Hives: Cheap ACs Fueling Kids' Skin?

By Franklin Everett Shaw

January 2, 2026

The sweltering Houston heat is legendary, and for many families, air conditioning isn’t a luxury – it’s a necessity. But could this reliance on cool air be contributing to a hidden health crisis in our children?

The link between air conditioning and childhood eczema and hives in Houston is a complex issue, but one worth exploring. The dry air, potential for mold growth, and circulation of allergens within AC systems can all contribute to skin irritation, especially in young children. Let’s dive into how Houston’s AC culture might be impacting our kids and what we can do about it.

Houston’s climate is notoriously humid. This humidity breeds mold, both indoors and outdoors. Air conditioning systems, if not properly maintained, can become breeding grounds for mold and other allergens. These allergens are then circulated throughout the home, potentially triggering eczema and hives in susceptible children.

Eczema, also known as atopic dermatitis, is a chronic inflammatory skin condition characterized by itchy, dry, and inflamed skin. Hives, or urticaria, are raised, itchy welts on the skin that can appear suddenly. Both conditions are often triggered by allergens or irritants.

Here’s a step-by-step guide to maintaining your AC unit to minimize mold and allergen exposure:

Change Your Air Filter Regularly: This is the single most important thing you can do. Aim to replace your filter every 1-3 months, especially during peak AC usage in the summer. Use a high-quality filter with a MERV rating of 11 or higher to trap smaller particles. Don’t cheap out on filters!
Clean the Evaporator Coil: The evaporator coil is where condensation forms, creating a perfect environment for mold growth. You can purchase a coil cleaner at most hardware stores. Turn off the AC unit, remove the access panel, and spray the coil cleaner according to the instructions. Let it sit for the recommended time, then rinse with water.
Clean the Condensate Drain Line: This line can become clogged with algae and debris, leading to water backup and mold growth. Locate the drain line (usually a PVC pipe near the outdoor unit) and use a wet/dry vacuum to suck out any clogs. You can also pour a cup of bleach down the drain line every few months to prevent buildup.
Professional AC Servicing: Schedule a professional AC tune-up at least once a year. A qualified technician can thoroughly clean and inspect your system, identify potential problems, and ensure it’s running efficiently. This is especially important for older AC units.
Control Humidity Levels: Even with AC, humidity can still be a problem in Houston. Use a dehumidifier in areas prone to moisture, such as bathrooms and basements. Aim to keep indoor humidity levels between 30-50%.

Common mistakes developers face when dealing with AC maintenance include:

Neglecting Regular Filter Changes: This is the most common mistake. People often forget or procrastinate, leading to a buildup of dust and allergens. Set a reminder on your phone or calendar to change your filter regularly.
Using the Wrong Type of Filter: Using a cheap, low-quality filter won’t effectively trap allergens. Invest in a high-quality filter with a MERV rating of 11 or higher.
Ignoring Strange Smells: A musty or moldy smell coming from your AC unit is a sign of a problem. Don’t ignore it! Investigate the source of the smell and take action to eliminate it.
DIY Repairs Without Proper Knowledge: AC systems are complex. Attempting repairs without proper knowledge can be dangerous and can damage your unit. Always consult a qualified technician for repairs.

Beyond AC maintenance, consider these alternative cooling strategies and skincare routines tailored for Houston’s humid climate:

Embrace Fans: Ceiling fans and portable fans can help circulate air and create a cooling breeze without drying out the air as much as AC. Use them in conjunction with AC to reduce your reliance on it.
Strategic Window Management: Open windows in the early morning and late evening when the air is cooler. Close them during the day to keep the heat out. Use blackout curtains to block sunlight.
Cool Showers and Baths: A cool shower or bath can provide temporary relief from the heat and help soothe irritated skin. Use a gentle, fragrance-free soap.
Lightweight Clothing: Wear loose-fitting, breathable clothing made from natural fibers like cotton or linen. Avoid synthetic fabrics that can trap heat and sweat.
Hydration is Key: Drink plenty of water throughout the day to stay hydrated and help your skin retain moisture.
Moisturize Regularly: Apply a fragrance-free, hypoallergenic moisturizer to your child’s skin several times a day, especially after bathing. Look for moisturizers containing ceramides or hyaluronic acid to help repair the skin barrier.
Identify and Avoid Triggers: Keep a diary to track potential triggers for your child’s eczema or hives. Common triggers include certain foods, soaps, detergents, and environmental allergens.
Consult a Dermatologist: If your child’s eczema or hives are severe or persistent, consult a dermatologist. They can provide a diagnosis, recommend appropriate treatments, and help you develop a management plan.

Consider the case of the Miller family in Katy, Texas. Their young daughter, Lily, suffered from persistent eczema that seemed to worsen during the summer months. After implementing the AC maintenance tips outlined above, switching to fragrance-free skincare products, and using a humidifier in Lily’s room, they saw a significant improvement in her skin condition.

Another example is the Garcia family in Pasadena. Their son, Mateo, developed hives every time they turned on the AC. They discovered that their AC unit was heavily contaminated with mold. After having the unit professionally cleaned and installing a UV light to kill mold spores, Mateo’s hives disappeared.

These are just two examples of how AC-related factors can contribute to skin problems in children. By taking proactive steps to maintain your AC unit, control humidity levels, and adopt a tailored skincare routine, you can help protect your child’s skin and improve their overall health and well-being in the challenging Houston climate.

The humid climate of Houston presents unique challenges for families dealing with childhood eczema and hives. While air conditioning is often essential for comfort, it’s crucial to be aware of the potential risks and take steps to mitigate them. By prioritizing AC maintenance, adopting alternative cooling strategies, and implementing a gentle skincare routine, Houston parents can create a healthier and more comfortable environment for their children. Don’t underestimate the impact of a clean AC unit and a proactive approach to skincare in the fight against eczema and hives.