A2L Safe Charge

A2L R-454B & R-32 PT Tool

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

The A2L Replacement for Check & Charge. Professional HVAC refrigerant charging tool for the next generation of gases. Get accurate Superheat and Subcooling for R-454B, R-32, and R-410A without the bloat. WHY TECHS ARE SWITCHING A2L-Ready: Full support for R-454B and R-32. Error-Proof Charging: Automatically applies Dew Point for superheat and Bubble Point for subcooling on R-454B—eliminating the most common A2L charging mistake. Safety First: Integrated Max Allowable Charge Calculator. Enter the room dimensions to instantly get your safe charge limit based on current A2L safety standards. Professional Reports: Generate branded PDF field reports with your company name and logo to email directly to clients. Offline Reference: Full P/T charts, refrigerant comparisons, and safety guides—no cell service required. BUILT FOR THE FIELD Zero Friction: No accounts. No logins. No "waiting for data to sync." Privacy Focused: No data collected. What happens on the job site stays on your device. Ultra-Fast: Opens in a second. Gives you the answer. Gets you off the roof. Stop waiting for legacy apps to catch up. Get the tool built specifically for the A2L transition.

Ratings & Reviews

  • 5.0
    out of 5
    1 Ratings

-Removed paywall

Version 1.1.1

The developer, Mike Watson, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    The developer indicated that this app supports the following accessibility features. Learn More

    • Supported Features

      • VoiceOver

      • Voice Control

      • Dark Interface

      • Differentiate Without Color Alone

      • Sufficient Contrast

      • Reduced Motion

    Information

    Seller
    • Mike Watson
    Size
    • 40.3 MB
    Category
    • Business
    Compatibility
    Requires iOS 15.1 or later.
    • iPhone
      Requires iOS 15.1 or later.
    • iPad
      Requires iPadOS 15.1 or later.
    • iPod touch
      Requires iOS 15.1 or later.
    • Mac
      Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    • English
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    • © 2026 Mike Watson
  • Developer Website
  • Privacy Policy

    • More by Mike Watson

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