Furnace

An HVAC air handler is the indoor unit that moves air through a home's heating and cooling system. Depending on the system design, it may contain an indoor coil, blower, filter area, drain pan, and electrical controls. The air handler works with equipment such as an outdoor air conditioner or heat pump to circulate conditioned air through the home's ductwork.

An HVAC blower motor powers the blower assembly that moves air through a home's heating and cooling system. It circulates air across the evaporator coil during cooling and, in furnace systems, across the heat exchanger during heating. Weak airflow, unusual noises, or no airflow can indicate a blower motor or another airflow, electrical, filter, or duct problem.

HVAC installation costs depend on the type of system, equipment size, efficiency rating, installation complexity, ductwork condition, labor requirements, and optional upgrades. A professional HVAC evaluation and load calculation help determine the correct system and installation requirements for a home.

HVAC replacement costs depend on the system type, equipment capacity, efficiency, installation complexity, ductwork, electrical requirements, permits, and optional upgrades. Because homes differ, a reliable estimate requires an evaluation of the existing system and home, along with proper equipment sizing. Comparing the complete scope of work (not just the equipment price) helps homeowners evaluate replacement proposals.

HVAC maintenance is preventive care intended to inspect and maintain equipment before problems develop, while HVAC service is a broader term commonly used for professional work performed on an HVAC system, including maintenance, diagnostics, repairs, adjustments, and component replacement. In other words, maintenance is a type of HVAC service, but service can also involve diagnosing or correcting an existing problem.