Freon™ MO99 refrigerant is the closest match in terms of efficiency and capacity to R-22 of all “no oil change” replacement refrigerants. It is compatible with all traditional and new lubricants. Freon™ also has a much lower discharge temperature that can help prolong the life of the compressor.
For most R-22 systems, when retrofitting to Freon™ MO99, simply recover the R-22, replace critical seals, charge refrigerant, restart and monitor for leaks, label the system with a Freon™ MO99 retrofit label. The system can then be topped off during service without removing the entire refrigerant charge. For complete details, please refer to the MO99 Retrofit Guidelines.