The Premier Source for HVAC/R Training
Elevate your career with our educational resources and certifications that
empower HVAC/R professionals to succeed
The Premier Source for HVAC/R Training
Elevate your career with our educational resources and certifications that empower HVAC/R professionals to succeed
What Our Certified Technicians Are Saying
Chris Guerrero
HVAC Technician
Chris Guerrero earned his EPA Universal Certification using our study materials—books, videos, and audio—to master refrigerant handling across all system types. Here's what he had to say about the experience:
Congrats on your EPA Universal Certification, Chris! Why pursue it via EPATest.com?
I thought it was a great opportunity that was offered to me, and I figured, why not let me give it a shot? It’s a great thing, and I wanted to gain a better understanding of the field, so I went for it.
Get EPA 608 Certified
Mainstream Engineering has been a trusted leader in EPA Section 608 Certification for decades.
Since 1994, we've helped technicians get certified with comprehensive study guides, practice exams, textbooks, and a certification test designed to assess but also to educate on safe refrigerant handling.
More Certifications
More Certifications
EPA SECTION 609
HC(A3) + HFO(A2L)
Indoor Air Quality
R-410A
Green HVAC/R
PM Tech
Study material & practice exams
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In-house Customer Support
About Us
At EPATest.com, we believe knowledge is the foundation of success. From the EPA Section 608 exam to essential tips and insights.
As a trusted certifying agency, Mainstream Engineering provides a wide range of certifications, including Section 608 (Types I, II, III, and Universal), EPA Section 609, and other industry-specific qualifications that ensure comprehensive, industry-standard training and certification.
Through our comprehensive educational resources and certification programs, we empower professionals to advance their careers with confidence and expertise.
Show off your certifications
Show off your certifications
Display your hard-earned credentials with custom decals, patches, and more. Proudly showcase your success!