Replacing an air conditioner compressor without removing the old one is not a practical or feasible option. The compressor is a critical component of an air conditioning system, and it requires proper installation and alignment to function correctly. Trying to replace the compressor without removing the old one would likely result in various issues and may cause further damage to the system.
To replace an air conditioner compressor, the proper procedure involves discharging the refrigerant, disconnecting the electrical connections, removing the old compressor, installing the new one, and then recharging the system with the appropriate amount of refrigerant. This process requires specialized tools, knowledge, and expertise.
Moreover, attempting to perform such a repair without proper training and equipment could be dangerous and may lead to safety hazards, damage to the equipment, and voiding of warranties. It's best to leave compressor replacement to trained HVAC professionals who have the necessary experience and tools to perform the job safely and effectively. If your air conditioner's compressor is faulty, contact a qualified technician or an HVAC service company to diagnose and repair the issue properly.