| 1 | Define the target output | 50–100 units per shift | Basic semi-automatic assembly line with manual material loading and inspection | Confirm that the rated output is based on the same product type, shift length, and working hours as your plan. |
| 2 | Match the machine to annual demand | 10,000–25,000 units per year | Flexible production cells with quick-change tooling and limited automation | Calculate annual demand using working days, shifts per day, planned downtime, and seasonal demand. |
| 3 | Choose the correct product category | Residential split, window, portable, or light commercial air conditioners | Use dedicated fixtures for the selected cabinet size, heat exchanger design, compressor layout, and refrigerant circuit | Machines designed for one product family may require tooling changes or upgrades for another product family. |
| 4 | Allow for peak-season demand | Plan capacity at 110%–125% of average demand | Modular stations that can support overtime, an additional shift, or future parallel equipment | A moderate capacity reserve helps absorb seasonal orders without permanently over-sizing the line. |
| 5 | Evaluate line balance | Target cycle time = available production time ÷ required units | Balanced stations for coil assembly, brazing, leak testing, evacuation, charging, electrical testing, and final inspection | The slowest workstation limits the complete line output, so bottleneck time must be checked separately. |
| 6 | Check automation level | Manual, semi-automatic, or automatic operation according to volume and labor availability | Semi-automatic equipment is often suitable for approximately 100–300 units per shift | Compare labor savings, maintenance skills, changeover time, quality requirements, and return on investment. |
| 7 | Confirm utility requirements | Electrical power, compressed air, cooling water, ventilation, and exhaust capacity | Provide machine utilities according to the supplier's technical specification and local safety regulations | Verify voltage, frequency, peak electrical load, air pressure, air consumption, and ventilation requirements before installation. |
| 8 | Plan factory space | Allow production area plus 20%–30% for material flow, inspection, and maintenance access | Compact modular line for limited space, or straight-line and U-shaped layouts for higher throughput | Include incoming material storage, work-in-process inventory, finished goods, operator aisles, and emergency exits. |
| 9 | Set quality and traceability requirements | Leak testing, vacuum verification, refrigerant charge accuracy, electrical safety, and final performance checks | Integrate digital gauges, barcode or serial-number recording, data logging, and automatic pass/fail alarms where required | Make sure test accuracy, calibration intervals, data storage, and rejected-unit handling match the quality system. |
| 10 | Plan future expansion | Prepare for 25%–50% additional output when market growth is expected | Scalable line with spare control capacity, standardized fixtures, expandable conveyors, and available floor connections | Ask whether extra stations, tooling, software licenses, and test capacity can be added without replacing the complete line. |