Air Handler/Blower: This is the heart of the system that circulates air throughout the ducts. The air handler uses a fan (blower) to push air through the system’s ducts to the different rooms in a building. In heating systems, a furnace or heat pump provides the warm air, while air conditioners cool the air in the summer months.
Evaporator Coil (Indoor Coil) The evaporator coil is located inside the air handler or the indoor unit of an air conditioner, typically near the blower fan. This coil is where the refrigerant absorbs heat from the air inside your home.
● HowItWorks: The evaporator coil contains refrigerant in a cold, low-pressure liquid form. As warm air from your home is blown over the coil, the refrigerant inside the coil absorbs heat from the air, causing it to evaporate and change into a gas. This heat exchange cools the air that circulates back into your living space.
● RoleinCooling: As the refrigerant evaporates, it removes the heat from the air. The cooled air is then blown into your home, lowering the temperature.
Supply Ducts: These are the main channels that carry conditioned air (heated or cooled) from the air handler to different areas of the building. Typically, the ducts are made from sheet metal, fiberglass, or flexible materials, depending on the design of the HVAC system. The size and layout of the supply ducts are key to ensuring efficient airflow and proper temperature regulation.
Return Ducts: After air circulates through the rooms and is affected by
temperature changes or contaminants (like dust and pet dander), it returns to the HVAC unit via return ducts. These ducts are usually larger than supply ducts to accommodate the volume of air being drawn back in for re-conditioning.