: While Section 609 certification exists for automotive technicians, it does not allow the purchase of R22 for home HVAC systems.
: Many systems can be converted to use newer, more available refrigerants like R-407C or R-421A. do you need a license to buy r22 refrigerant
: Even if a homeowner finds a way to obtain R22, it is illegal for anyone without an EPA certification to install or add it to an air conditioning system. : While Section 609 certification exists for automotive