SuperCool Slide Rule HVAC 4+

Designstein, llc

    • 4.3 • 133 Ratings
    • Free



The SuperCool HVAC app provides comprehensive solutions to the most complex problems in the industry. The app provides the user with an interactive experience, possible solutions, on-screen instructions and guides the technician through each step of repair work.
Included in the app is:
Superheat & Subcooling charging of all the popular refrigerants on the market with on screen corrective action including “add refrigerant” or “remove refrigerant” based on the specific conditions entered
Duct sizing & layout calculator for flex, round metal, rectangular and oval
Compressor windings troubleshooter with “acceptable resistance” or “unacceptable resistance”
Conversions for everything HVAC
Capacitor series and parallel installation output values
Airflow troubleshooting for both heating & cooling with acceptable airflow ranges and solutions if airflow is too high or too low
Wet Bulb calculator
Belt Sizing calculator
And much, much more

What’s New

Version 1.0

This app has been updated by Apple to display the Apple Watch app icon.

Ratings and Reviews

4.3 out of 5
133 Ratings

133 Ratings

Jemrada ,

Great app but needs update

I love this app. Hope the links to videos and the functions of the app are updated to work with newer iOS. Keep up the good work. Helpful app for me and others.

MTthew129 ,


Listen. If you ride around in a van or truck all day long and either diagnose or maintain residential or commercial HVAC systems then you should download this app right now. It’s easy and there is a wealth of information in it. The setting I use the nose is “charge a unit”. Knowing my target superheat without having to go in my van, dig out a dirty slide rule (that’s barley readable), and try to find a rounded number closest to what’s available is no longer needed. I have exact numbers in my face in seconds. The color scheme is easy on the eyes, and honestly this is my “go to” app for any HVAC questions. This app gives you a duct sizing calculator, PT charts, diagnostic follow throughs, and the list goes on and on. DOWNLOAD THIS APP!!!

robert1us ,

Love the app but

The app is a very good hvac tool but after a few months I try and open it to use it and it shows free trial is up that u have to buy it and trust me I want to buy it I just can’t figure out how yet. U can uninstall it and reinstall it and it will start working again just wish I could buy it.

App Privacy

The developer, Designstein, llc, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.

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