Step1: Turn off power to the HVAC system at the breaker and verify it’s off.
Step2: Recover refrigerant per regulations before opening the refrigerant circuit.
Step3: Remove access panels and disconnect refrigerant lines and electrical connections.
Step4: Extract the old coil assembly and clean the surrounding area.
Step5: Set the new coil in place, reconnect refrigerant lines, and tighten fittings.
Step6: Vacuum, recharge with proper refrigerant, restore power, and test for leaks and proper cooling operation.