To ensure proper evacuation, R22 systems should be evacuated down to:

To ensure proper evacuation of R22 systems, the ideal target is down to 500 microns. When performing evacuation, reaching this level is crucial because it indicates that the system is free of moisture and non-condensables.

Evacuating to 500 microns creates a vacuum that effectively removes atmospheric air, which contains water vapor that can cause ice formation and damage the system. At this micron level, the low pressure allows any residual moisture to vaporize and be evacuated, ensuring the refrigerant can effectively perform its cooling duties without interference.

Achieving this evacuation level is essential for the optimal performance and longevity of the air conditioning system. It minimizes the risk of compressor failure and enhances efficiency by avoiding potential operational issues related to contamination or humidity.