How does an air conditioner improve indoor air quality?

An air conditioner improves indoor air quality primarily by reducing humidity. High humidity levels can create an uncomfortable environment, lead to mold growth, and contribute to dust mites' proliferation, which can negatively impact health. By efficiently removing excess moisture from the air, an air conditioner helps maintain a more comfortable humidity level, reducing potential allergens and respiratory irritants in the indoor environment. This creates a healthier atmosphere for occupants, as it minimizes the chances for mold development and improves overall air cleanliness.

While increasing temperature or adding humidity would likely result in a decline in air quality, circulating outdoor air may not effectively filter out pollutants, making reducing humidity the most beneficial function of air conditioning when it comes to enhancing indoor air quality.