The answer to 'types of air handler' is that there are several common types of air handlers used in HVAC systems for homes. The most common types include:
Furnace Air Handlers: These are integrated with a furnace and use the furnace's blower to circulate air throughout the home. They are a common choice for homes with forced-air heating systems.
Air Handler Units: These standalone air handlers contain a blower and coil, and can be used with central air conditioning systems or heat pumps. They are often installed in attics, basements, or utility closets.
Mini-Split Air Handlers: These compact air handlers are ductless and typically mounted high on a wall. They are often used in homes without existing ductwork or to add cooling/heating to specific rooms.