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Stop guessing what to study. Get the most comprehensive, up-to-date guide that covers every question type, regulation update, and test strategy you need to become certified in 2026.
Start Your Free Practice NowWe've distilled years of HVAC expertise and real exam data into a guide that actually works.
Every question on the real exam is covered. From Clean Air Act regulations to recovery techniques, we leave nothing to chance.
EPA regulations change. Our guide changes with them. Be confident you're studying the most current requirements and refrigerant rules.
Practice with questions that mirror the actual test format. Our explanations break down why answers are right or wrong.
Need to focus on a specific section? Jump directly to focused practice for each exam type.
Each certification covers different equipment types and refrigerant categories. Choose your path or go Universal.
For servicing small, sealed appliances containing 5 pounds or less of refrigerant. Includes window units, dehumidifiers, and small refrigeration systems.
For working on high-pressure appliances like air conditioners, heat pumps, and refrigeration systems with over 5 pounds of refrigerant.
For technicians working with low-pressure equipment including centrifugal chillers and systems using refrigerants like R-11 and R-123.
The most comprehensive certification covering all equipment types. Required for contractors and technicians working across multiple systems.
Confused about the rules? Read our comprehensive guides. Need to master refrigerant relationships? Use our interactive tools — free with your account.
Master refrigerant pressure-temperature relationships with our visual, interactive chart. Perfect for understanding how refrigerants behave under different conditions.
Use P-T Chart ToolAfter failing the Type II exam twice at other centers, I found HVAC Exam Master. The practice questions were almost identical to the real test. I passed on my next attempt and got hired at a major HVAC company the following week.
Join thousands of HVAC professionals who trusted our guide to pass their EPA 608 certification on the first try.
沪公网安备31010402010179号
沪ICP备2023003282号-38