CoolCalc vs Coolbench

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

Coolbench is the all-in-one toolkit for HVAC/R technicians: everything you reach for on a service call, in one fast, offline app. No login, no ads, no subscription. CHARGING ASSISTANT (SUPERHEAT & SUBCOOLING) • Live superheat and subcooling with an instant ON TARGET / ADD / RECOVER verdict • Piston target superheat from indoor wet bulb and outdoor temperature (Title 24 table); TXV target from the nameplate subcooling • System Check: possible causes (overcharge, undercharge, restriction, low airflow, dirty condenser, TXV bulb, non-condensables) from both readings • Saturation from refrigerant data checked against manufacturer PT charts, for R-410A, R-454B, R-32, R-22, R-290 and more • Save readings to your job history and export a PDF report FIELD TOOLS • Data plate decoder: scan or type a serial to get the manufacture date, age and tonnage (Carrier, Trane, Lennox, Goodman, Rheem, York and more) • Fault codes for gas furnaces and ductless mini-splits, with likely causes and first checks • Evacuation assistant: micron log, timed decay test, moisture vs leak verdict • A2L toolkit for R-454B and R-32: charge threshold check, room-size estimate, service checklist • Customer service reports: PDF with your logo, readings, photos and signatures • Refrigerant log for EPA recordkeeping, with CSV export REFRIGERANT PT CHART FOR 150+ REFRIGERANTS • Pressure-temperature tables with glide, bubble and dew points, in psig or kPa and °F or °C • GWP, oil type and replaces / replaced-by lineage for every refrigerant 37 HVAC CALCULATORS • Superheat calculator, target superheat, compression ratio, condenser split • Duct calculator (round, rectangular, oval), airflow CFM, static pressure • HVAC load calculator (Manual J-lite), psychrometrics, enthalpy, dew point • Electrical: voltage drop, wire size, 3-phase power, kW / HP / BTU • Gas input, hydronic GPM, EER, furnace temperature rise and more • Voltage imbalance, recovery cylinder fill, line-set charge, annual leak rate, SEER to SEER2 EPA 608 CERTIFICATION PREP • 800+ original practice questions for Core and Type I / II / III • Study mode with instant explanations, timed Exam mode, Review my mistakes • Universal mock exam: 100 questions, graded section by section like the real test • Exam readiness score and per-section accuracy HVAC TRAINING ACADEMY • 18 lessons: refrigeration cycle, superheat and subcooling, charging, airflow, electrical basics, psychrometrics, A2L refrigerants, heat pumps, mini-splits, evacuation, brazing, 2026 refrigerant rules, gas furnaces, compressor diagnosis • Quick check-yourself quiz after every lesson • 120 flashcards with spaced repetition and a searchable HVAC glossary • Interactive refrigeration-cycle diagram • Daily study streak and a shareable completion certificate AI COACH (online) • Ask air conditioning and refrigeration questions and get clear, practical answers in the field Works on iPhone and iPad, in English and Spanish (Español), fully offline except the AI Coach. No account, no ads, no tracking. Pick your own accent color. Coolbench Pro is a one-time purchase that unlocks every calculator, the full refrigerant set, the Advanced Academy, all flashcard decks, the Universal mock exam and the AI Coach. No subscription, ever. Coolbench is an educational reference tool. Always verify against manufacturer specifications and follow all applicable codes. Completion certificates are training records, not EPA certification. Terms of Use: https://sites.google.com/view/terms-of-use-coolbench-hvac-to/home Privacy Policy: https://sites.google.com/view/privacypolicycoolbenchhvactool/home