How to Improve Your Indoor Air Quality with AC Maintenance

Is your AC struggling to keep your home cool and comfortable? Are you noticing musty smells or increased allergies? These could be signs of poor indoor air quality (IAQ). Regular AC maintenance can help improve your home’s air quality and overall comfort.

Here’s what you can do:

1. Change air filters regularly: Dirty filters can trap allergens like pollen, dust, and pet dander, reducing airflow and increasing energy consumption. Replace them every one to three months, or more frequently if you have pets or allergies.
2. Upgrade to High-Efficiency Filters (MERV 13+ or HEPA): Your AC’s filter is your first line of defense against dust, pollen, mold spores, and even bacteria. Standard filters capture large particles, but high-efficiency filters, such as MERV 13 or HEPA-grade, trap much smaller pollutants—including those that aggravate asthma or allergies.
3. Clean or replace the evaporator coil: The evaporator coil is a vital component of your AC system, responsible for cooling the air. Over time, it can accumulate dirt, dust, and other contaminants that can reduce its efficiency and promote mold growth. Regularly clean or replace the evaporator coil to ensure optimal performance and improve indoor air quality.
4. Add UV-C Light for Germicidal Protection: UV-C lighting is a game-changer in AC sanitation. Installed near the evaporator coil or in ductwork, UV-C lamps kill bacteria, viruses, and mold spores, preventing buildup and improving the quality of circulated air. Especially useful in humid environments, UV-C is a passive but powerful layer of IAQ defense.
5. Inspect and clean ducts: Your home’s HVAC system uses ducts to circulate air throughout your home. Over time, these ducts can accumulate dust, dirt, and debris, which can become a breeding ground for mold and bacteria. Regular duct cleaning can help improve air quality and reduce the risk of health problems.
6. Check for leaks: Leaks in your AC system can allow moisture to enter your home, creating a humid environment that promotes mold and mildew growth. This can lead to respiratory problems and other health issues. Regular inspections can help identify and address leaks promptly.
7. Seal Ducts and Improve Ventilation: Leaky ducts can pull in pollutants from attics, walls, or unconditioned spaces—reducing the quality of air entering your living space. During your next AC inspection, request a duct sealing check to ensure no contaminants are sneaking into the system. Proper ventilation balance also ensures stale indoor air is replaced with fresh air—especially important in tightly sealed buildings.
8. Consider professional cleaning: For a thorough cleaning and inspection of your AC system, consider hiring a professional HVAC technician. They have the tools and expertise to clean and maintain your system effectively, ensuring optimal performance and improved indoor air quality.
9. Balance Indoor Humidity: Too much humidity encourages mold growth, while dry air irritates skin and respiratory systems. AC systems with built-in humidity controls can help maintain the optimal 30–50% range. If your system doesn’t offer built-in humidity control, ask your service provider about adding a dehumidifier or humidifier module as part of a professional upgrade.

By following these tips, you can enjoy cleaner, fresher air and a healthier home. Remember, investing in regular AC maintenance is an investment in your health and comfort. Companies like Al Sulaithi Air Conditioning and Refrigeration (established in 1985 and a trusted name in Qatar) offer comprehensive AC maintenance services to ensure your system is functioning optimally and providing you with clean, healthy air.