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

1.9 out of 5
14 Ratings
14 Ratings
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


Great app! Beats using a paper P-T Chart

Allows you to save your favorite refrigerants for quick access. It's values are more accurate than a standard P-T Chart on paper, and you can adjust it based on elevation too!

nicknori15 ,

Good when/if it works

The app only works 1/10 times otherwise it just leaves a blank with screen. When it's working it's great but rarely does.


Parker Hannifin Corporation
3.6 MB
Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© Parker Hannifin Corporation 2013


  • Family Sharing

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

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