Changing from R-22 to R-410A or some other refrigerant, means you need to change your cooling coil.
As of 2010, R-22 (often referred to as Freon®) was discontinued for use in new air conditioning systems. Because R-410A can absorb and release more heat than R-22, newer air conditioning compressors can run cooler, reducing the risk of compressor burnout due to overheating.
However, because R-410A also functions at a higher pressure than R-22, if you were to put R-410A refrigerant into a system designed for R-22, the pressure would be too much and the unit would break. Therefore you the cooling coils need to be changed also.
Contact Campbell-Sevey where we can help resize the coils for you to best fit your needs.