Technicians Toolkit vs HVAC Mastery

Technician Toolkit is the all-in-one resource for HVAC, electrical, and mechanical professionals. Trusted by over 100,000 users, this app provides the essential tools you need for the job site. Key Features: Technical Tools: Access a massive database of error codes, wiring diagrams, and sensor table data. HVAC Calculators: High-precision calculators for load, duct sizing, and system diagnostics. Business Management: Manage customers, create professional invoices, and handle your Google Business Profile (GMB) directly from the app. Education: Improve your skills with industry-specific articles, quizzes, and video courses. Community: Connect with other experts in our community chat and browse the tool shopping section. Whether you are troubleshooting an AC unit or managing your service business, Technician Toolkit puts everything you need in your pocket. Built by BitCodeHub for the modern service industry.

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 getting certified. Made by a working HVAC service tech. EPA 608 CERTIFICATION PREP - 443 practice questions across all four sections: Core, Type I, Type II and Type III - Checked against current EPA rules (40 CFR Part 82, Subpart F) - Timed practice exams by section, with an explanation for every answer - A readiness score so you know when you're ready for the real test LEARN THE TRADE 4 learning tracks take you from fundamentals to certification: - 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 with full practice exams 68 bite-size lessons as swipe cards with real equipment drawings. SIM LAB: LIVE SIMULATORS Break a part, meter it, and solve the service call: - Refrigeration cycle: live pressures, superheat and subcooling on 5 systems, with real faults to diagnose - Motor wiring: condensing unit, furnace blower, ECM, three-phase and more, with a meter and clamp meter - Thermostat wiring: gas furnace + AC, package unit and heat pump, with live 24 V - Electrical diagram: 6 systems and 79 faults to find with a working meter FIELD TOOLS - P/T chart, superheat and subcooling, charge check - Ohm's law, wire sizing, motor amps, capacitors - Duct sizing, airflow, psychrometrics, line sets - Unit converter and a refrigerant guide including R-454B and R-32 STUDY FEATURES - 190+ flashcards and module quizzes - Bookmarks and personal notes on any lesson - Daily study reminders to keep your streak alive - Progress tracking with badges - Dark mode - English or Spanish: switch in Profile or in iPhone Settings - Made for iPhone Duo and iPad - Sign in to back up your progress and pick it up on another device No ads, no subscriptions. Just the knowledge you need to pass your exams and succeed in the field.