There is a huge amount of equipment in the field that relies on R22....probably 80% of existing.
I’m so sorry to sound stupid, but how do you know what kind you need? We bought an older house, and I can’t find out. Our AC has been crapping out, and we were told to have it charged, but according to the paperwork I do have, the unit is almost 12 years old anyway, so maybe we should just replace? I have severe asthma, so I need AC or breathing becomes VERY difficult in North Carolina summers.