P-T Calculator1.31
Publisher Description
This comprehensive Pressure/Temperature calculation tool from National Refrigerants provides several unique features designed to make the HVAC/R technician’s job easier. This app can calculate a simple pressure/temperature relationship or calculate superheat/subcool temperatures. The user can input pressure or temperature(s) on any screen and the other values are automatically calculated and displayed. For refrigerant blends, both saturated vapor and saturated liquid values are displayed. Within the superheat/subcool screen, a graphic display for blends will show the entering, mid-point, and outlet temperature as well as line temperature.
Other features include:
- Automatic altitude correction (if location services are enabled)
- English/Metric units
- Easily choose from “favorites” refrigerants list
- Supplementary information about refrigerants and links to NRI website
- Link to NRI Lubricant Cross Reference app
- Link to NRI Branch Locator tool
Version History Added more refrigerants. 1.31 Aug 21 Added refrigerants 1.25 09/21/2025 Added new refrigerants and updated the altitude lookup. 1.1 02/02/2024 Calculation fix 1.0.7 06/02/2021 Added new refrigerants 1.0.6 06/03/2020 Fixed some iPad layout issues 1.0.4 03/04/2018 Fixed some layout issues. 1.0.3 02/05/2018 Minor formatting changes on narrow screens. 1.0.2 01/21/2018 1.0.1 01/04/2018
About P-T Calculator
The company that develops P-T Calculator is National Refrigerants, Inc.. The latest version released by its developer is 1.31.
To install P-T Calculator on your iOS device, just click the green Continue To App button above to start the installation process. The app is listed on our website since 2026-10-14 and was downloaded 14 times. We have already checked if the download link is safe, however for your own protection we recommend that you scan the downloaded app with your antivirus. Your antivirus may detect the P-T Calculator as malware if the download link is broken.
How to install P-T Calculator on your iOS device:
- Click on the Continue To App button on our website. This will redirect you to the App Store.
- Once the P-T Calculator is shown in the iTunes listing of your iOS device, you can start its download and installation. Tap on the GET button to the right of the app to start downloading it.
- If you are not logged-in the iOS appstore app, you'll be prompted for your your Apple ID and/or password.
- After P-T Calculator is downloaded, you'll see an INSTALL button to the right. Tap on it to start the actual installation of the iOS app.
- Once installation is finished you can tap on the OPEN button to start it. Its icon will also be added to your device home screen.
Program Details
System requirements
Download information
Pricing
Version History
version 1.31
posted on 2026-10-14
Version History Added more refrigerants. 1.31 Aug 21 Added refrigerants 1.25 09/21/2025 Added new refrigerants and updated the altitude lookup. 1.1 02/02/2024 Calculation fix 1.0.7 06/02/2021 Added new refrigerants 1.0.6 06/03/2020 Fixed some iPad layout issues 1.0.4 03/04/2018 Fixed some layout issues. 1.0.3 02/05/2018 Minor formatting changes on narrow screens. 1.0.2 01/21/2018 1.0.1 01/04/2018
version 1.31
posted on 2026-08-23
Version History Added more refrigerants. 1.31 1d ago Added refrigerants 1.25 09/21/2025 Added new refrigerants and updated the altitude lookup. 1.1 02/02/2024 Calculation fix 1.0.7 06/02/2021 Added new refrigerants 1.0.6 06/03/2020 Fixed some iPad layout issues 1.0.4 03/04/2018 Fixed some layout issues. 1.0.3 02/05/2018 Minor formatting changes on narrow screens. 1.0.2 01/21/2018 1.0.1 01/04/2018
version 1.25
posted on 2026-07-31
Version History Added refrigerants 1.25 09/21/2025 Added new refrigerants and updated the altitude lookup. 1.1 02/02/2024 Calculation fix 1.0.7 06/02/2021 Added new refrigerants 1.0.6 06/03/2020 Fixed some iPad layout issues 1.0.4 03/04/2018 Fixed some layout issues. 1.0.3 02/05/2018 Minor formatting changes on narrow screens. 1.0.2 01/21/2018 1.0.1 01/04/2018
version 1.25
posted on 2025-09-21
Sep 21, 2025
Version 1.25
Added refrigerants
version 1.25
posted on 2025-09-21
Added refrigerants
version 1.1
posted on 2024-02-02
Feb 2, 2024
Version 1.1
Added new refrigerants and updated the altitude lookup.
version 1.0.7
posted on 2021-06-02
Jun 2, 2021 Version 1.0.7
Calculation fix
