CoolCalc - HVAC Tools

CoolCalc is an offline HVAC field kit for service technicians. Check the numbers, save the work, and turn a service visit into a clear PDF report—right on your iPhone.

TOOLS FOR THE CALL
• PT Chart: pressure-temperature lookup for R-410A, R-22, R-32, R-454B and more, with bubble and dew values where applicable.
• Charge Check: calculate superheat and subcooling, including an optional target superheat estimate for fixed-orifice systems.
• Duct Sizer 2.0: size round or rectangular ducts and review friction, velocity, and fitting losses.
• Airflow and psychrometrics: quick CFM, BTU, ΔT, tons, ACH, wet-bulb, dew point, and enthalpy calculations.
• Diagnostics: static pressure, capacitor checks, electrical calculations, gas-heating checks, and a manual system summary.
• Refrigerant service: log charge added or recovered and check recovery cylinder fill.

FROM READING TO REPORT
Save supported results to a job, add photos and notes, record customer and system details, and generate a PDF service report on device. Share it through the iOS share sheet when you're ready.

A2L AND FIELD REFERENCES
Look up refrigerant PT data and find safety-class information, unit conversions, formulas, and A2L service reminders. Always verify readings and procedures against the equipment manufacturer's instructions and applicable codes.

FREE TO START. PRO WHEN YOU NEED MORE.
Common-refrigerant PT and charge checks are free. Advanced calculations and job documentation have free-use limits. Pro unlocks unlimited advanced calculations, jobs, and PDF exports, plus more photos per job and the full refrigerant reference. Choose a lifetime purchase or a subscription in the app.

NO ACCOUNT REQUIRED
Your job records, photos, and reports are stored on your device unless you choose to share them. Core field calculations and PDF creation work without a cellular signal.

Terms of Use (EULA): https://sites.google.com/view/terms-of-use-for-coolcalc
Privacy Policy: https://sites.google.com/view/privacypolicyforcoolcalc