# HVAC Mastery — Learn the HVAC Trade > Interactive HVAC trade learning companion with simulators and certification prep. (iPhone/iPad app by arjan qema.) - Source: https://appshunter.io/ios/app/hvac-mastery/id6773027290 (this page in markdown: same URL + `.md`) - Developer: [arjan qema](https://appshunter.io/developer/1895283314) - Category: Education, Utilities - Price: Free - Rating: 5.00/5 from 1 App Store ratings - Age rating: 4+ - Requires: iOS 14.0 · 21 MB - Languages: American English - Released: 2026-06-04 - Data updated: 2026-07-06 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/hvac-mastery/id6773027290/reviews.md ## What is HVAC Mastery? HVAC Mastery is the hands-on study companion for anyone learning the heating, ventilation, air conditioning, and refrigeration trade — from first-year apprentices to experienced technicians brushing up for certification. WHAT YOU'LL LEARN 4 structured learning tracks take you from fundamentals to EPA 608 certification prep: - HVAC Fundamentals: Heat transfer, refrigeration cycle, system components, electrical basics - Core Systems: Air conditioning, heat pumps, gas furnaces, air distribution, controls - Advanced Systems: Commercial refrigeration, hydronic systems, IAQ, building automation - EPA 608 Certification: All four sections (Core, Type I, Type II, Type III) with full practice exams INTERACTIVE DIAGRAMS & TOOLS Go beyond reading — tap, test, and troubleshoot: - Electrical circuit diagrams with interactive disconnect, contactor, and transformer controls - Motor wiring diagrams for PSC, CSR, split-phase, ECM, and 3-phase motors with on-diagram meter probes - Thermostat wiring simulator for heat pump, gas furnace, A/C, and electric heat systems - Refrigerant cycle simulator with fault injection — see what happens when components fail - Built-in calculators: superheat/subcooling, Ohm's law, wire sizing, duct sizing, refrigerant charge HANDS-ON CHALLENGES Test your skills with real-world scenarios: - Wiring challenges: wire a system from scratch and check your work - Troubleshooting challenges: diagnose faults using meter readings step by step - Service call scenarios based on actual field situations from HVAC textbooks - Timed quizzes for every module with score tracking FIELD REFERENCE TOOLS Quick-access references you'll use on the job: - Refrigerant guide with P/T charts for 20+ refrigerants including R-290 and R-454B - Winding resistance tables, megohm test thresholds, capacitor testing procedures - ECM error codes, amp draw diagnostics, motor rotation checks - Compressor diagnostic reference with wiring and electrical nomenclature STUDY FEATURES - 190+ flashcards covering every major topic - Bookmarks and personal notes on any lesson - Dark mode for late-night study sessions - Daily study reminders to keep your streak alive - Progress tracking with badges and completion percentages - Cloud sync — pick up where you left off on any device COMPLETELY FREE HVAC Mastery is 100% free. All lessons, quizzes, flashcards, interactive diagrams, and field reference tools are available at no cost. Create an account to save your progress across devices. Privacy Policy: https://hvacmastery-app.vercel.app/privacy Terms of Service: https://hvacmastery-app.vercel.app/terms Built by HVAC professionals for HVAC professionals. No ads — just the knowledge you need to pass your exams and succeed in the field. ## Key features - Structured learning tracks - Interactive electrical and wiring simulators - Refrigerant cycle simulator with fault injection - Built-in HVAC calculators - Hands-on wiring and troubleshooting challenges - Field reference tools and refrigerant guide - Flashcards and progress tracking ## Frequently asked questions about HVAC Mastery ### What is HVAC Mastery? HVAC Mastery is a free educational app designed to help individuals learn the heating, ventilation, air conditioning, and refrigeration trade. It offers structured learning tracks, interactive simulations, and practical challenges to build skills and prepare for certification exams. ### Is HVAC Mastery free to use? Yes, HVAC Mastery is completely free. All lessons, quizzes, flashcards, interactive diagrams, and field reference tools are available at no cost. Users can create an account to save their progress across devices. ### What HVAC topics does HVAC Mastery cover? HVAC Mastery covers HVAC Fundamentals, Core Systems (like air conditioning and furnaces), Advanced Systems (commercial refrigeration, IAQ), and preparation for all sections of the EPA 608 Certification exam. ### Does HVAC Mastery have ads? No, HVAC Mastery is ad-free. The app is designed to provide an uninterrupted learning experience, focusing solely on delivering the knowledge needed for success in the HVAC field. ### Can I use HVAC Mastery offline? The provided data does not specify offline functionality. However, cloud sync is mentioned for saving progress across devices, suggesting an internet connection may be required for full features. ### What devices support HVAC Mastery? HVAC Mastery is supported on iPhone, iPad, and iPod. The app is designed for iOS devices, allowing users to study on their preferred Apple hardware. ### How does HVAC Mastery help with EPA 608 certification? HVAC Mastery includes a dedicated track for EPA 608 Certification prep, covering all four sections (Core, Type I, Type II, Type III) with full practice exams to help users prepare for their official certification. ### What kind of interactive tools are available in HVAC Mastery? The app features interactive electrical circuit diagrams, motor wiring simulators with meter probes, a thermostat wiring simulator, and a refrigerant cycle simulator where users can inject faults to observe system behavior. ## Version history (last 1 release) ### 1.0 — 2026-06-05 No release notes. --- *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 2026-07-06.*