HVAC EPA 608 Exam Prep icon

HVAC EPA 608 Exam Prepv2.1

Released May 28, 2026Major

iOS

What changed

  • New featureAdded refrigerant calculator for ODP, GWP, and phase-out status data
  • New featureAdded pressure-temperature reference and superheat/subcooling lookups
  • ContentAdded over 1,000 exam questions across all certification sections
  • New featureAdded score tracking and mock exam mode
  • MonetizationUpdated Pass Promise terms for subscription extensions

Original release notes

Welcome to HVAC EPA 608 Exam Prep from VoltExam!

REFRIGERANT CALCULATOR: R-410A, R-22, R-32, R-134a, R-404A, R-407C — ODP, GWP, operating pressures, type, and phase-out status. The Core section data you need to know cold.

PRESSURE-TEMPERATURE REFERENCE: Instant P/T lookups for all common refrigerants plus superheat and subcooling references for R-410A and R-22.

1,000+ QUESTIONS covering all four sections — Core, Type I, Type II, Type III, and Universal — with per-section score tracking and mock exam mode.

PASS PROMISE updated: 80% average, active subscription 3 months, still do not pass — 4 months extended free. voltexam.com/pass-promise

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