This is a small clip from a recent video where Joshua Griffin went live talking about how HVAC contractors need to take more classes on A2L refrigerants. The problem with some of the classes that are out there is they are not covering some of the material that matters most and contractors won't know that they are not informed until it's too late. Make sure that you are getting plenty of the classes in and don't assume that you know everything just because you took one class.
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