CoolCalc is the offline HVAC field toolkit built for service technicians — run the numbers, document the job, and hand your customer a professional PDF report, all without a signal.
No account. No cloud. No subscription lock-in. Buy once, use it forever.
8 FIELD CALCULATORS
• PT Chart — Instant pressure-temperature lookup, including A2L refrigerants
• Charge Check — Superheat & subcooling with built-in Target Superheat estimation
• Duct Sizer — Size round or rectangular ducts by airflow and velocity
• Airflow Quick Calcs — CFM, BTU, Delta T, tons, kW, and ACH in one tap
• Static Pressure — TESP diagnostics checklist
• Capacitor Test — Verify run/start capacitors against rated values
• Refrigerant Log — Track charge added and recovered per job
• System Quick Score — Fast health snapshot of the whole system
A2L READY
• Built for the 2025 refrigerant transition — R-32, R-454B and more
• Safety-class flags and leak-check reference so you stay compliant
CALCULATE → DOCUMENT → REPORT (the loop other tools don't have)
• Save any calculation straight into a job record
• Attach photos with captions, customer info, and system details
• Generate a clean, branded PDF report and share via email, AirDrop, or any app
REFRIGERANT REFERENCE
• Quick PT data for R-410A, R-22, R-134a, R-32, R-454B and more
• Field-ready tables you can check in seconds
PRIVACY FIRST
• No account, no server uploads — your jobs, photos, and reports stay on device
• Camera and Photos access requested only when you need it
PRO UPGRADE — ONE-TIME OR SUBSCRIPTION
• Unlimited jobs and PDF exports, more photos per job
• Full refrigerant reference library
• Lifetime option: pay once, keep it for good
Built by HVAC techs, for HVAC techs. Fast, focused, and made for the field — from the rooftop to the crawlspace.
Terms of Use (EULA): https://sites.google.com/view/terms-of-use-for-coolcalc
Privacy Policy: https://sites.google.com/view/privacypolicyforcoolcalc
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