> AFAIK most commonly-used refrigerant compounds are not generally available to civilians because of the environmental damage caused by their irresponsible discharge.
I don't know if the EPA test has changed in the decade since I took it, but it was very easy for me to get the cert needed to buy refrigerants myself. I found an A/C supply store that administered the tests, found a study guide on the internet, ready the study guide in half an hour, took the test. Now apparently you can do the test online whereas I had to go to the store.
I don't know if the EPA test has changed in the decade since I took it, but it was very easy for me to get the cert needed to buy refrigerants myself. I found an A/C supply store that administered the tests, found a study guide on the internet, ready the study guide in half an hour, took the test. Now apparently you can do the test online whereas I had to go to the store.