R134 _ Well Mine did
R134
r134
Yes.
R134-a
R134-a
If you mix r12 with r134 air conditioning system, it will cause a high pressure in your airconditioning system and eventually damage the compressor and the evaporator. R12 is only for r12 aircon and something with r134, it can't be mix.
A substance discharged into the air
You could, but first you have to do the upgrade for the 134. Or, you should be able to still buy a small can of r-12. It is still available.
It would be R134a.
Ozone
After being discharged from the hospital, she was able to return home to continue her recovery.