Ruud vs CoolCalc

We’ve redesigned Ruud for Contractors to offer the industry’s most powerful, intuitive, and easy-to-use app. Whether you’re on a residential service call or installing 40 units at a major site, the free Ruud Contractor app’s Bluetooth® capability – paired with an enabled HVAC system -- makes set-up and troubleshooting simpler than ever. With Ruud for Contractors and eligible air systems, you can easily: Install - Set up systems quickly and easily with the new Bluetooth® setup - Monitor operating parameters from your phone while charging outdoor units - Verify system setup with access to system operating status - Quickly check for alarms Service - Diagnose active alarms and alarm history - Check system operating status - Easy step-by-step parts replacement and system setup The Ruud for Contractors app also offers powerful support for all of our air and water products, with a new Product Technical Support design that is easier to use and more accurate than ever: - Access installation instructions - Search parts lists - Download manuals - View tech sheets - Research consumer literature Track Warranty information - Scan and confirm model and ownership details - Check warranty status and share HVAC systems warranty certificate Locate - Look up retailers - Look up distributors Research - Find up-to-date rebate information - Research financing options - Offer extended warranty - Confirm AHRI information and certification for HVAC systems

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