Proper analysis of the P-T relationship can help service technicians diagnose a refrigeration system issue quickly. The ChillMaster P-T Chart allows quick pressure to temperature conversion by providing essential refrigerant data to mobile devices. Contractors and technicians will enjoy P-T Chart’s user friendly design and precise calculations (based on National Institute of Standards and Technology (NIST) Refrigerant Properties). Other features include the ability to customize screens for certain refrigerants and preferred unit of measurement. More than 70 refrigerants (traditional and natural) are featured in PT Chart. Extras include a training article “Using the P-T Card as a Service Tool.”

What’s New

Version 1.6

minor UI bug fixes for IOS 11.0

Ratings and Reviews

2.2 out of 5
21 Ratings

21 Ratings

Azzedine ,

Won’t load on iPad Pro

The app won’t load on an iPad Pro using iOS 14.4. It hangs with the load bar at about 30%. I’ve rebooted and the behavior changed but it would still not load. I’ve tried WiFi and cell data for a connection. Unfortunately there is no way to reach out to Parker (email, phone). The app also should work without internet access as there are plenty of places without it. Emerson has an alternative app that works. Hopefully Parker will fix it.

Goodairmike ,

Your search for PT charts is over

The person who reviewed this app before needs to do a better job-------------

Using a iPad mini learned about this app in a class about txv's

This app has about 30+ refrigerants.

Allows you to set your own pressure and temperatures.

Has a small guide on how to use P-T charts
For the new apprentices or service technicians
Also explained saturation vapor and liquid

So far I have about 6 to 7 P-T charts this is by far the best.

Also allows you to pick from Fahrenheit or Celsius

Allows you to take pressure units BAR etc

Allows you to pick out to altitude from sea level to 10,000 feet

The first time you started it does take a while to load. But there is a lot of information in this P-T chart and I've only noticed that when I first started the app never after.

People still don't know about this app

---Side note ---When you're choosing the refrigerants there is a star next to it you have to pick the refrigerants you want and save them for them to appear on your list

kemosabi1789 ,

App will not load

App will not load when I click on it it just says error loading, been doing it for a few days now , anyone else have trouble with this , I’ve tried deleting and reinstalling the app , still doesn’t work

App Privacy

The developer, Parker Hannifin Corporation, 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.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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