Will a r134 compressor replace a r22 compressor?

No, an R134a compressor cannot directly replace an R22 compressor due to differences in refrigerant properties and system requirements. R134a and R22 operate at different pressures and have different lubrication needs, so using an R134a compressor in an R22 system could lead to inefficiency or damage. If converting from R22 to R134a, the entire system, including the compressor, evaporator, and condenser, typically needs to be modified or replaced to accommodate the different refrigerant.