I'm self employed too. I have the book but haven't taken the time to read through it or take the test. Anybody can read and take a test. But there has to be some standard. I have 4 state licenses but anybody can read and take a test. Have to have 6hrs. of CE to renue them too. Got EPA cert. in 92' when people said it would never happen.
Bryant will term a dealer ( Factory authorized service agent) if 50% of techs are Nate Cert. Does it make them more $ ? If the public thinks they are better. This discussion will go on for a while just like EPA cert. did.