Mainstream Engineering Offers

HC(a3) & HFO(A2L) - LOW GWP Refrigerant training

Mainstream's HC/HFO training covers all aspects of techniques and regulations for the safe handling of flammable hydrocarbon and hydrofluoroolefin refrigerants.

As the HVAC/R industry evolves, more energy-efficient and environmentally friendly refrigerants are being introduced.  These Low-GWP refrigerants are considered flammable (A3) or slightly flammable (A2L).  Proper handling of these refrigerants is important, which is why Mainstream Engineering offers a complete A3/A2L low-GWP training for EPA 608-certified technicians.

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Free study Material

Mainstream Engineering offers free study materials for HC/HFO - Low - GWP Certification online:

Know before you begin

Mainstream's HC/HFO training covers all aspects of techniques and regulations for the safe handling of flammable hydrocarbon and hydrofluoroolefin refrigerants. Before obtaining Mainstream's HC/HFO certification, the technician must have an EPA 608 certification from an EPA-approved certifying agency, such as Mainstream. 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 AC certification.

Mainstream's HC/HFO Low-GWP-A2L Manual is free to read and available here. When you are ready to become certified, click the Get Started link above to start an open-book test. The $26.95 exam fee includes the exam itself and a wallet-sized certification card. If you do not pass the first time, the retest is only $7.95.

Have Questions?

Mainstream Engineering Corporation (at EPATest.com) is here to provide complete testing services and support for technicians seeking their EPA 608 certification in addition to certification programs. If you have questions or want to know more about our program, contact us online.