compressors r404 and r134a

[skydiver1954]

can a r404 compressor use r134a gas in running a high temp cooler. I have a r404 compressor and would like to swap out to a new r404 compressor. will the r404 compressor work with the r134a gas?

 

[moideen]

R 134a refrigerant is low efficiency compare to r404a refrigerant. You cannot attain the cooling load by using 134a instead of r404a.

 

[EnergyProfessional]

You need to consider the pressures the refrigerant operates under and possibly upgrade the components and possibly piping and also TXV....