What role does an air handler play within an HVAC system?

An air handler is a critical component of an HVAC system primarily responsible for distributing heated or cooled air throughout a building. It operates by taking the conditioned air produced by the heating or cooling unit and using a fan to circulate it through the ductwork and into various rooms. This distribution is essential for maintaining a consistent and comfortable indoor temperature.

In addition to its main function of air distribution, an air handler often includes components such as filters to improve indoor air quality, and it may have options for humidity control as well. However, its primary role remains focused on the effective delivery of air. Understanding this function is essential for HVAC professionals when considering how to optimize system performance and energy efficiency in both residential and commercial settings.