Converting an old residential air conditioner (AC) into a commercial one by replacing all parts except the compressor and condenser coils is not a straightforward process. Residential and commercial air conditioners are designed differently to meet different cooling requirements and regulations.
Commercial air conditioners are typically designed to cool larger spaces and handle higher cooling loads than residential units. They often incorporate more robust components, have higher airflow capacity, and feature different control systems. Commercial units may also need to comply with specific regulations and standards that are different from those for residential units.
Replacing parts such as the evaporator coil, air handler, expansion valve, and other components with commercial-grade equivalents may not be sufficient to convert a residential AC into a commercial one. The entire system, including the ductwork and control mechanisms, needs to be properly designed and sized to meet commercial cooling demands.
It's essential to consult with a professional HVAC technician or engineer who can assess the feasibility of such a conversion and ensure that it complies with local building codes and regulations. They will be able to provide you with expert advice on whether it's possible to repurpose your residential AC or if it would be more practical and cost-effective to invest in a purpose-built commercial air conditioning system.