EPA Section 608 Technician Certification
Type I Certification – Can only work on Small Appliance (5lbs or less of refrigerant)
Type II Certification – Can only work on Medium, High and Very-High Pressure Appliances.
Type III Certification – Can only work on Low-Pressure Appliances.
Universal Certification – Someone who possesses Type I, Type II and Type III Certifications
Mainstream offers free study materials for Type I Open Book Certification online:proctor location in your area.
Mainstream is approved by the EPA as a certifying agency for Section 608 Type I, II, III and Universal exams and Section 609 Motor Vehicle A/C certification.