# EPA 609 Certification Prep — MVAC Practice Test & Reference > EPA 609 MVAC certification exam preparation and reference tool. (iPhone/iPad app by Shanghai Sheyuan Network Technology Co., Ltd..) - Source: https://appshunter.io/ios/app/epa-609-certification-prep/id6762544342 (this page in markdown: same URL + `.md`) - Developer: [Shanghai Sheyuan Network Technology Co., Ltd.](https://appshunter.io/developer/1560626858) - Category: Utilities, Productivity - Price: Free with in-app purchases - Rating: 5.00/5 from 2 App Store ratings - Age rating: 4+ - Requires: iOS 17.0 · 2 MB - Languages: American English - Released: 2026-04-21 - Data updated: 2026-09-03 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/epa-609-certification-prep/id6762544342/reviews.md ## What is EPA 609 Certification Prep? Preparing for your EPA Section 609 MVAC certification? EPA 609 Certification Prep gives you focused practice for the 25-question, open-book motor-vehicle air-conditioning exam — with clear explanations, CFR and SAE citations, and an offline reference library built for the shop. WHAT'S INCLUDED: Practice Mode - 50 multiple-choice questions covering Section 609 regulations, refrigerant identification, recovery equipment, leak detection, evacuation, retrofits, and hybrid / EV high-voltage safety. - Every answer paired with an explanation and a regulation or SAE citation (40 CFR Part 82 Subpart B, SAE J2788 / J2843 / J2851, and more). - Drill Core 609 topics or MVAC topics separately, or sweep across the whole bank. Mock Exams - Mock 1 — 25 questions, open-book format matching the real Section 609 exam. - Mock 2 — advanced MVAC scenarios: R-1234yf A2L handling, POE oil on hybrid compressors, retrofit compliance, evacuation to 500 microns. - Question overview grid + flag-for-review during the exam. - Section-by-section pass / fail diagnostic against the 84% EPA cutoff. Reference Library (always free) - Refrigerants: R-12, R-134a, R-1234yf, R-744, R-152a — with ODP, GWP, ASHRAE safety class, and service-port quick-reference. - Regulations: Section 609, Clean Air Act, Montreal Protocol, SNAP program, AIM Act. - Recovery Equipment: SAE J2788 / J2810 / J2843 / J2851 / J2845 standards plus the full MVAC service sequence. - Leak Detection: SAE J2791 / J2913 detector standards, common MVAC leak points, repair philosophy. - Safety: refrigerant exposure limits, A2L / A2 flammability, hybrid / EV high-voltage service, PPE, first aid. WHO IS IT FOR: - Automotive technicians preparing for Section 609 MVAC certification - Dealership service advisors needing refrigerant-handling authority - Vocational students and automotive-trade instructors - Independent mechanics servicing R-134a and R-1234yf systems WHY TECHS LOVE IT: - Fully offline — works in the shop, on the lot, or at a roadside service. - No ads, no tracking, no subscription traps. - Real citations on every answer so you can verify the source. - Completely free — every question, both mock exams, and the full reference library. No purchase, no account. - Clean UI designed for one-handed use on a phone next to the car. 100% FREE: Every practice question, both mock exams, and the full reference library are completely free — no in-app purchases, no subscription, no ads, no account. Practice questions are modeled on the Section 609 certification exam and the public 40 CFR Part 82 Subpart B regulations. This app is a study aid; certification is awarded by an EPA-approved 609 test administrator. Download EPA 609 Certification Prep and master the MVAC exam in your pocket. ## Key features - Practice mode with 50 multiple-choice questions - Explanations and citations for every answer - Mock exams mirroring the real certification test - Offline reference library for refrigerants and regulations - Diagnostic pass/fail analysis against EPA cutoff - One-time unlock for Pro content ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Unlock Full Certification Prep | $9.99 | one-time | ## Frequently asked questions about EPA 609 Certification Prep ### What is EPA 609 Certification Prep? EPA 609 Certification Prep is a mobile application designed to help users prepare for the EPA Section 609 MVAC certification exam. It offers practice questions, detailed explanations with citations, and an offline reference library covering relevant regulations and technical information. ### Does EPA 609 Certification Prep have ads? No, EPA 609 Certification Prep is ad-free. The developers explicitly state that there are no ads, tracking, or subscription traps within the application. ### How much does EPA 609 Certification Prep cost? The app is free to download and includes a free mock exam. Full access to all Pro mock packs, weakness analysis, and future pro content requires a one-time in-app purchase of $9.99 USD. ### Can I use EPA 609 Certification Prep offline? Yes, EPA 609 Certification Prep is fully offline. This allows users to study and practice in locations without internet access, such as in a shop or during roadside service. ### What devices support EPA 609 Certification Prep? EPA 609 Certification Prep is supported on iPhone and iPad devices. The app is designed with a clean UI for one-handed use on a phone. ### How often is EPA 609 Certification Prep updated? The latest version of EPA 609 Certification Prep is 1.0.2, which was last updated on June 11, 2026. Future pro content is also included with the one-time unlock. ### What is the age rating for EPA 609 Certification Prep? EPA 609 Certification Prep has an age rating of 4+. This indicates it is suitable for a wide audience, though its content is specifically tailored for individuals preparing for professional certification. ### Is the certification obtained through EPA 609 Certification Prep? No, EPA 609 Certification Prep is a study aid. The actual certification is awarded by an EPA-approved 609 test administrator after passing their official exam. ## Version history (last 5 releases) ### 1.0.5 — 2026-07-17 Performance and reliability improvements. ### 1.0.4 — 2026-07-01 All practice questions, mock exams, and reference material are now completely free - no purchase required. ### 1.0.3 — 2026-06-27 Added a More Pro Tools section to discover related field calculators. ### 1.0.2 — 2026-06-11 Performance and stability improvements. ### 1.0.1 — 2026-05-02 Initial release. ## More apps by Shanghai Sheyuan Network Technology Co., Ltd. - [木不 - 解忧伴侣](https://appshunter.io/ios/app/id1597427913) - [上岸香 - 考研考公专注助手](https://appshunter.io/ios/app/id6758300319) - [Stamping Tonnage Calculator](https://appshunter.io/ios/app/stamping-tonnage-calculator/id6760528007) - [CNC Thread Drill Hole Calc](https://appshunter.io/ios/app/cnc-thread-drill-hole-calc/id6760606318) - [Orifice Jet Flow](https://appshunter.io/ios/app/orifice-jet-flow/id6760607248) - [Concrete Block Wall Est](https://appshunter.io/ios/app/concrete-block-wall-est/id6760607814) All apps by Shanghai Sheyuan Network Technology Co., Ltd.: https://appshunter.io/developer/1560626858 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-03.*