Indoor air quality (IAQ) refers to the air quality within and around homes and other buildings, especially as it relates to the health and comfort of occupants. IAQ can be affected by gases (such as carbon monoxide), particulates, and microbial contaminants (mold, bacteria).

Central York offers installation and service of equipment for a better and more comfortable indoor environment, including central humidifiers and dehumidifiers and the Guardian Air Purification system.