1. Choose the installation location – Select a suitable wall location for the indoor air handler where airflow can distribute evenly throughout the room. The outdoor condenser should be placed in a ventilated area outside with enough clearance for airflow and maintenance access.

2. Mount the indoor unit – Install the mounting bracket securely to the wall, making sure it is level and properly anchored to studs or solid backing. Once installed, the indoor air handler is positioned and locked into place on the bracket.

3. Drill the wall opening – A small hole is drilled through the exterior wall to allow the refrigerant line set, electrical wiring, and condensate drain line to pass through. The hole is usually angled slightly downward to help ensure proper drainage and prevent water intrusion.

4. Install the outdoor condenser – The outdoor condenser unit is placed on a concrete pad, ground stand, or wall bracket depending on the setup. It is secured and leveled to ensure stable operation and performance.

5. Connect the line set and wiring – The refrigerant lines, electrical wiring, and condensate drain line are routed between the indoor and outdoor units. All connections are tightened, insulated, and secured according to manufacturer guidelines.

6. Vacuum, test, and start the system – The refrigerant lines are vacuumed to remove air and moisture from the system. Once complete, refrigerant is released, the system is checked for leaks, and the unit is powered on to verify proper operation.