Installed new high-efficiency Carrier HVAC system. Performed load calculation using Manual J to determine proper equipment sizing based on square footage and insulation values. Ran refrigerant lineset per manufacturer specifications, achieving 500-micron vacuum. Charged with Puron refrigerant, testing and adjusting for optimal subcooling and superheat. Configured communicating thermostat. Performed airflow and static pressure measurements across furnace and evaporator coil. Cycled system, verifying temperature split and safe operating pressures. Documented installation per code requirements.