Every exam, one place
Core and all three specialty types live in a single hub. See mastered categories, active exams, and pick up exactly where you left off.

Master one category at a time through short adaptive drills. Follow our recommendations or choose your own path. We'll tell you when you're ready for the exams and when a mastered topic starts slipping.
Starting at $10 · 90 days · No Subscription
No 100-hour study plans. Just Category Drills that build mastery and prepare you for the real EPA 608 exam.
Core and all three specialty types live in a single hub. See mastered categories, active exams, and pick up exactly where you left off.

We let you know when you're ready for the exam. Our question bank is comprehensive, with no fluff or unnecessary content. Once you've seen the questions and are consistently getting them right, we'll tell you you're ready. Before exam day, simply review the Cram List and Most Tested Numbers. View the complete EPA 608 cram sheet.

Miss a question twice and it gets flagged and repeated until it actually sticks.

Mastered a category, took a break, and got rusty? We'll flag it so you can tighten that one back up.

Every question includes a plain-language explanation of why the correct answer is correct.

Already purchased? Go to My Exams
| Certification | Coverage | Price | Access | Actions |
|---|---|---|---|---|
|
Best Value
Includes Core + Type I + Type II + Type III
Save $15 vs buying separately
EPA 608 Universal
Recommended
|
One certification covering Core plus Type I, Type II, and Type III for technicians who work across all refrigeration system types. |
$25 | 90 days of full access | |
Required for all technicians who purchase, handle, recover, or dispose of refrigerants under EPA Section 608 regulations. |
$10 | 90 days of full access | ||
Certifies technicians to service, repair, and dispose of refrigerant in small appliances such as window AC units and refrigerators. |
$10 | 90 days of full access | ||
Covers high-pressure refrigeration and AC systems, including residential heat pumps, commercial rooftop units, and process cooling equipment. |
$10 | 90 days of full access | ||
Certifies work on low-pressure centrifugal chillers and similar systems used in large commercial and industrial building cooling. |
$10 | 90 days of full access |
Every question on your Core exam traces back to one of five moments in refrigerant law. Here's the chain that turned "handle refrigerant carefully" into a federal certification requirement.