Knowing the heat pump installation process before it starts helps you plan and reduces surprises. A typical central heat pump installation takes 4–8 hours, though ground‑source systems may take several days. Here’s what happens.
Step 1: Pre‑Installation Assessment. The contractor verifies system size, inspects existing ductwork, and confirms installation location. For sizing, see heat pump sizing guide.
Step 2: Removal of Old System (If Applicable). The old equipment is removed, and refrigerant is recovered according to EPA regulations.
Step 3: Install Indoor and Outdoor Units. The indoor air handler (or coil) and outdoor heat pump unit are placed and connected. Refrigerant lines and electrical wiring are run.
Step 4: Ductwork and Drainage. The contractor inspects and may seal or modify ductwork. Condensate drain lines are connected.
Step 5: Vacuum and Charge. The system is evacuated and charged with the correct amount of refrigerant.
Step 6: Testing and Inspection. The contractor runs the system, checks heating and cooling, and schedules a final inspection.
For the overall explanation, revisit what heat pump installation involves. For choosing the contractor, see how to choose a licensed heat pump contractor. For post‑installation care, see maintaining your heat pump system. For insurance, see insurance coverage for new heat pump.