HVAC Toolkit Pro

About HVAC Toolkit Pro

HVAC Toolkit Pro is a complete reference and calculation toolkit built for HVAC
technicians, appliance repairers, and engineering students. Everything you need to
diagnose, size, and service equipment is packed into one fast, offline-friendly app.

Diagnose faster
- AC error codes for major brands with troubleshooting PDF reference books
- Refrigerator and washing machine error code lookup
- Wiring and electrical diagrams for common systems
- PCB board types reference with diagrams
- App Connect directory to find the right manufacturer apps and tools

Calculate with confidence
- Superheat and subcool calculators
- Pressure-temperature (PT) charts
- Duct sizing and pipe sizing tools
- HVAC load calculation
- Psychrometric tools
- System performance analyzers
- Electrical calculators (wire sizing, voltage drop)
- Hydronic system tools
- Unit converter
- Refrigerant data reference
- Overload relay and compressor sizing tools
- EPA and technician reference tools

Work smarter
- Set service and maintenance reminders with notifications
- Recent activity history to track your work
- Search across all error codes, diagrams, and references instantly
- Read PDF service manuals directly in the app
- Light, dark, and system theme modes

Accurate, fast, and always at your fingertips â whether you are on a rooftop unit,
at the workbench, or in the classroom.

Pro Subscription
Upgrade to HVAC Toolkit Pro for unlimited access to advanced Pro tools, including
superheat and subcool calculations, psychrometrics, load and pipe sizing, diagnostics,
and more, with an ad-free experience.

Note: HVAC Toolkit Pro is an independent utility app. It is not affiliated with,
endorsed by, or sponsored by any appliance or HVAC equipment manufacturer. All product
names, logos, and brands are property of their respective owners and are referenced
only for identification and diagnostic purposes.