The HVAC unit most commonly found in the attic is called an air handler. This essential component plays a critical role in your home's heating and cooling system.
What is an Air Handler?
An air handler is a central part of your home's heating, ventilation, and air conditioning (HVAC) system. As its name suggests, its primary function is to handle the air inside your home. It draws in air, conditions it (either heating or cooling it), and then circulates this conditioned air throughout your entire living space via a network of ducts.
These units often bear a resemblance to a gas furnace in their general shape and design. They are engineered to efficiently manage airflow, ensuring that warm or cool indoor air is consistently delivered to every room in your home, contributing significantly to indoor comfort.
Common Air Handler Placements
While attics are a very common location for air handlers due to their accessibility for ducting and efficient use of space, these versatile units can also be found in other areas of a home.
Common Placement | Description |
---|---|
Attic | Provides good access for ductwork distribution to all parts of the house. |
Basement | Often chosen in homes with basements, offering easy access for maintenance. |
Utility Closet | Compact designs allow for installation in dedicated closets or utility rooms. |
The Air Handler's Role in Your HVAC System
The air handler is the indoor component of a split HVAC system. It works in conjunction with an outdoor unit—either an air conditioner (for cooling) or a heat pump (for both heating and cooling).
- For Cooling: The air handler houses the evaporator coil, which absorbs heat from the indoor air. The fan then blows this cooled air through the ductwork.
- For Heating: If paired with a heat pump, the air handler contains a coil that releases heat into the air. Some air handlers may also include electric heating strips for auxiliary heating or as a primary heat source. If part of a traditional furnace setup, it works with the furnace to distribute heated air.
Essentially, the air handler is the part that moves the air, acting as the circulatory system for your home's comfort, ensuring that conditioned air reaches every corner of your house.