Yes, it is mandatory to create a vacuum in the split AC piping after installation and before releasing the refrigerant from a compressor. This process is known as "evacuating the system," and it is a critical step in the installation of a split air conditioning system.
When an air conditioning system is installed or serviced, air and moisture can get trapped in the refrigerant lines. If these contaminants are not removed, they can cause various issues, such as reduced cooling efficiency, increased energy consumption, and potential damage to the compressor and other components.
Creating a vacuum involves using a vacuum pump to remove air and moisture from the refrigerant lines, coils, and other components of the AC system. The vacuum pump lowers the pressure inside the system, causing the moisture and air to evaporate and be drawn out of the system. This process ensures that the system is free of contaminants and ready to be charged with the correct amount of refrigerant.
After the vacuum is created and the system is confirmed to be leak-free, the refrigerant can be released into the system. Charging the correct amount of refrigerant is essential for optimal cooling performance and energy efficiency.
Professional HVAC technicians are trained to handle this process correctly, as improper evacuation and refrigerant charging can lead to AC system malfunctions and potential safety hazards. So, it's best to have a qualified technician perform the installation and evacuation process for your split AC system.