What is ducting in HVAC?

Ductwork typically brings air from the A/C or furnace to its source and sends into your home or business through a supply duct. The air then naturally flows to different parts of your home or business where a return duct is located. ... This causes the HVAC system to continually work to generate more cold air

Does AC and heat use same duct?

The sources of warm air, such as a furnace, and cool air, such as an air conditioner, in a house or business often use the same distribution and control systems. If your house or business has central air conditioning, cool air probably flows through the same ducts that heat does and is regulated by the same thermostat.