Refrigeration Technician App: Diagnosis, PT Charts & Records in One Place
Refrigeration work has its own demands — PT charts across many refrigerants, fault diagnosis on sealed systems, and equipment rooms with no signal. R-Pro is built for exactly this, by people who do the work.
PT charts for 34 refrigerants
R-410A, R-22, R-404A, R-134a, ammonia, CO₂ and more — pressure ↔ saturation temperature, the basis for superheat and subcooling.
Diagnosis by symptom
Find likely causes, repair steps and parts from what you see on the unit — solenoid valves, TXV/EEV, compressors, condensers and more.
Equipment scanning
Capture the nameplate and keep model, specs and service history with the unit.
Offline records
Walk-in freezers and plant rooms have no signal — R-Pro works on-device and syncs later.
Where R-Pro fits
R-Pro is a refrigeration-and-HVAC field app with built-in PT charts, symptom diagnosis, equipment scanning and full offline records — 10 languages, $9.99/month, 7-day free trial. Try the free PT chart calculator first at /tools/refrigerant-pt-chart/.
Try R-Pro free for 7 days
Field-first HVAC & refrigeration app — diagnosis, scanning, voice memo, customer & accounting tracking. offline-first (works with no signal on site), 10 languages. $9.99/month.
Start your free trial →FAQ
Is there an app with refrigerant PT charts?
Yes — R-Pro includes PT charts for 34 refrigerants and a free online PT calculator at /tools/refrigerant-pt-chart/.
What app do refrigeration technicians use?
R-Pro is built for refrigeration and HVAC techs: PT charts, symptom-based diagnosis, equipment scanning and offline records in 10 languages.
Does R-Pro cover ammonia and CO₂?
Yes — the PT data covers natural refrigerants including R-717 (ammonia) and R-744 (CO₂) alongside common HFC, HFO and blended refrigerants.