Can Central Air Make You Sick

6December 2023

 Can Central Air Make You Sick? Understanding the Health Impact of Your AC System


A question that often arises among homeowners is whether central air conditioning systems can contribute to illness.

While central air systems are designed to improve indoor comfort, certain conditions within these systems can potentially impact health.

This article explores how central air conditioning might affect health and what steps you can take to ensure a healthy indoor environment.

Understanding the Link Between Central Air and Sickness

Central air conditioning systems, if not properly maintained, can contribute to a range of health issues, primarily due to the circulation of indoor air pollutants and the potential growth of mold and bacteria.

Common Health Concerns Linked to Central Air Systems

  1. Respiratory Issues: Dust, pollen, pet dander, and other airborne particles circulated by central air systems can exacerbate allergies and asthma.
  2. Spread of Airborne Contaminants: Central air systems can potentially spread contaminants like mold spores and bacteria if they are present in the ducts or other parts of the system.
  3. Sick Building Syndrome: Poor indoor air quality due to inadequate ventilation or filtration can lead to symptoms like headaches, dizziness, and fatigue, often referred to as Sick Building Syndrome.

How to Prevent Health Issues Related to Central Air

  1. Regular Maintenance: Ensure that your central air system is regularly inspected, cleaned, and maintained. This includes cleaning or replacing filters regularly.
  2. Proper Ventilation: Use exhaust fans and periodically open windows to introduce fresh air and reduce indoor pollutant levels.
  3. Control Humidity Levels: High humidity can encourage mold growth. Keep indoor humidity levels between 30 and 50 percent.
  4. Clean Ductwork: Have the ductwork professionally inspected and cleaned to remove dust, mold, and other contaminants.
  5. Choose High-Quality Filters: Use high-efficiency particulate air (HEPA) filters or those with high MERV ratings to better filter out small particles.

When to Seek Professional Help

If you suspect that your central air system is adversely affecting your health, consult with HVAC professionals.

They can assess your system for potential issues like mold growth, leaks, or inadequate filtration.


While central air conditioning systems are generally safe and effective, they require proper care and maintenance to ensure they do not adversely impact indoor air quality and health.

By understanding the potential health risks and taking proactive measures, you can enjoy the benefits of your central air system without compromising your health. is the #1 Online filtration retailer in the US!