The answer to 'what does installation do' is that installation is the process of properly setting up and connecting an HVAC system in a home or building. This involves carefully placing the indoor and outdoor units, connecting the refrigerant lines, electrical wiring, and ductwork to ensure the system functions efficiently and safely.
A professional HVAC installer will follow specific manufacturer instructions and local building codes to complete the installation. They have the necessary tools, skills, and experience to properly size the system, position the components, and test the entire setup to ensure it meets performance specifications. Proper installation is crucial for an HVAC system to operate reliably and provide optimal heating and cooling for the home.