Reference

Works offline. No signal needed.

PT Chart
Pressure-temperature for 9 refrigerants
System Check
Combined diagnostic, all readings in one view
Superheat / Subcooling
Calculator with diagnostic hints
Refrigerant Guide
Specs, safety, A2L transition info
Wire Sizing
NEC charts, breaker calc, voltage drop
Capacitors
Sizing, testing, and replacement rules
Error Codes
80+ codes across 8 manufacturers
Refrigerant Log
EPA tracking across all jobs + CSV export
Get ColdSnap Free
Job tracking, invoicing, diagnostics, and more