Built by techs, for techs

Everything an HVAC technician needs. One platform.

Training, wiring diagrams, troubleshooting trees, calculators, EPA exam prep, and an AI assistant — engineered for the field.

Free plan available · No credit card required

120+
Lessons
40+
Diagrams
8
Calculators
500+
EPA Questions

A complete field toolkit

Six tools that replace a binder full of PDFs, bookmarks, and YouTube tabs.

Knowledge Vault

Installation, startup, no-callback, wiring mastery, commercial — structured like a real curriculum.

Troubleshooting Trees

Step-by-step diagnostics for no-cool, no-heat, high head, low suction, RTUs, heat pumps, and more.

Field Calculators

Superheat, subcooling, airflow, duct sizing, voltage drop, temp split, BTU, CFM — instant answers.

Wiring Diagram Library

Searchable, zoomable diagrams for capacitors, contactors, transformers, furnaces, heat pumps, RTUs.

EPA 608 Training Center

Type I, II, III & Universal — timed exams, flash cards, weak-area tracking, certification readiness.

HVAC Tech AI

Ask the assistant for diagnostics, wiring help, refrigerant questions, or startup guidance — on the truck.

Knowledge Vault

Structured training. No more scattered notes.

Six pillars. Dozens of sections. Built so a first-year tech can ramp fast and a veteran can find an answer in seconds.

  • Bookmarks & notes per lesson
  • Progress tracking & resume
  • Search across the whole vault
  • Mobile-first reader for the truck
HVAC Installation
Curriculum + checklists
HVAC Startup Guide
Curriculum + checklists
No Callback HVAC
Curriculum + checklists
HVAC Wiring Mastery
Curriculum + checklists
Commercial HVAC Wiring
Curriculum + checklists
EPA 608 Training
Curriculum + checklists

Stop guessing. Start diagnosing.

Join HVAC technicians using Pro Vault to ship cleaner installs, cut callbacks, and pass EPA the first time.