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.
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