Moving air through ducts and your home is the primary goal of an Air Handler. An air conditioner can expel as much hot air as it needs. You may have a lot of heat from your furnace. However, without a blower, the inside air would just stay stagnant. It takes power behind it in order for your HVAC to function properly. An air handler is typically connected to a heat pump or an air conditioner. If you ever need emergency or supplementary heat, additional heat strips may be installed at any time. Other components might also improve your indoor air quality. Humidifiers, dehumidifiers, a HEPA filter, and other purification devices can all be added as needed.