How to recover r22 from residential system into the compresser so that I can change out coil then reuse r22

We have air cooling York chiller model YCHA 110, it has two systems with two reciprocating compressors, syst #1 = 60 ton, syst#2 =40 ton, when the chiller is running, after 5 minuites, compressor #1 tripping by oil pressure switch off due to liquid flooded in the suction line, also after 10...

What's up gents and ladies my heat pump blows cold air and its not on ac mode someone put a jump wire in the thermostat ?

My blower wheel in my AC unit is not fully turning. Its causing the coils to freeze as well and the AC will kick on outside and inside, but the air does not come through the vents. Is there a quick fix for this?

Can I go with a 8 x 14 square to oval reducer and run flex duct to the phlenum and maintain pressure I walked into a trunk that runs flesh with the wall and I no room from or extensions