HVAC Mastery
Learn the HVAC Trade
Free · Designed for iPad. Not verified for macOS.
Master HVAC fundamentals with interactive wiring diagrams, hands-on troubleshooting challenges, and real-world service call scenarios. Study smarter, wrench better.
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.
Ratings & Reviews
The developer, arjan qema, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Contact Info
- Identifiers
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- arjan qema
- Size
- 22.4 MB
- Category
- Education
- Compatibility
Requires iOS 14.0 or later.
- iPhone
Requires iOS 14.0 or later. - iPad
Requires iPadOS 14.0 or later. - iPod touch
Requires iOS 14.0 or later. - Mac
Requires macOS 11.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 HVAC Mastery