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:

For Type II, Type III, or Universal certification contact an HVAC wholesaler near you to inquire about our Qwik608™ Self-study course and test (Part Number QT3000).

For technicians using the Type I Open Book format only, the exam is open-book, but the passing grade is 84% (per section) instead of 72% (per section) and the core questions must be repeated in a proctored environment if other certifications are later desired. We suggest the closed book exam! Click here to find a 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.