# ASHRAE HVAC PT Chart — HVAC Pressure/Temp Calcs

> HVAC refrigerant pressure-temperature calculator with extensive data and sharing features. (iPhone/iPad app by ASHRAE, Inc..)

- Source: https://appshunter.io/ios/app/ashrae-hvac-pt-chart/id1273373336 (this page in markdown: same URL + `.md`)
- Developer: [ASHRAE, Inc.](https://appshunter.io/developer/375374912)
- Category: Business, Productivity
- Price: $0.99
- Rating: 1.00/5 from 2 App Store ratings · 4 written reviews indexed
- Age rating: 4+
- Requires: iOS 11.0 · 24 MB
- Languages: American English
- Released: 2017-09-14
- Data updated: 2026-08-20
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/ashrae-hvac-pt-chart/id1273373336/reviews.md

## What is ASHRAE HVAC PT Chart?

THE MOST COMPREHENSIVE P/T CHART ON THE MARKET IS NOW A UNIVERSAL APP: IT WORKS ON BOTH THE iPAD and iPHONE.

ASHRAE HVAC PT Chart is an electronic pressure temperature calculator that allows HVAC technicians and contractors to quickly look up the temperature and corresponding pressure for 100+ common HVAC refrigerants including both bubble and dew versions of azeotropic (mixture) refrigerants. This is the only PT Chart app that allows you to email complete PT chart lists, refrigerant properties, and your inputted values/results.

This is a unique PT Chart app for the following reasons:

1. Works on both the Apple iPhone and iPad (and adjusts its screen according to the mobile device screen size, whether you are running it on the iPhone 6 or the iPad)

2. Optimized for iOS 13+

3. Includes 100+ refrigerants

4. Allows you to input the temperature and then the corresponding pressure will display and vice versa.

5. Allows you to also use a slider control to specify the exact pressure or temperature to see the corresponding temperature or pressure

6. Displays a list of pressure/temperature values in 1 degree increments

7. Allows you to select the atmospheric pressure so as to show the true pressure-temperature relationship even for high elevations

8. Includes a database of 1000+ cities world-wide with elevation data that is used to derive atmospheric pressure

9. Display common properties for the selected refrigerant (oil type, GWP, composition, critical temp, boiling temp, and more...)

10. Email project inputs and properties for the selected refrigerant

11. Email the full pressure/temperature list for the selected refrigerant

12. Display units in both English and Metric

13. Includes both dew and bubble versions of any azeotropic (mixture) refrigerants

## Key features

- 100+ HVAC refrigerants
- Pressure-temperature lookups
- Email data sharing
- Refrigerant properties database
- Global city elevation data
- English and Metric units

## Recent user reviews (4 of 4)

All indexed reviews: https://appshunter.io/ios/app/ashrae-hvac-pt-chart/id1273373336/reviews.md

### 1/5 — Useless and broken

*2023-02-03, version 4.9*

Don’t buy it, it doesn’t work.

### 1/5 — Waste

*2022-12-14*

App doesn’t work it’s a waste of money

### 1/5 — It is not working!

*2020-11-15*

I cannot choose ref, it is crap

### 1/5 — Blank screens

*2020-05-14, version 4.7*

Screens blank after update.

## Frequently asked questions about ASHRAE HVAC PT Chart

### What is ASHRAE HVAC PT Chart?

ASHRAE HVAC PT Chart is a mobile application designed to serve as an electronic pressure-temperature calculator for HVAC technicians. It provides quick access to temperature and pressure data for over 100 common refrigerants, including both bubble and dew points for azeotropic mixtures.

### How many refrigerants does ASHRAE HVAC PT Chart support?

The application supports over 100 common HVAC refrigerants. It also includes both bubble and dew versions for azeotropic (mixture) refrigerants, ensuring comprehensive coverage for various applications.

### Can I share data from ASHRAE HVAC PT Chart?

Yes, ASHRAE HVAC PT Chart allows you to email complete PT chart lists, refrigerant properties, and your inputted values and results. This feature is unique among PT Chart apps and facilitates collaboration and record-keeping.

### Does ASHRAE HVAC PT Chart account for elevation?

Yes, the app allows you to select the atmospheric pressure, which is crucial for showing the true pressure-temperature relationship, especially at high elevations. It includes a database of over 1000 cities worldwide with elevation data.

### What units does ASHRAE HVAC PT Chart use?

ASHRAE HVAC PT Chart displays units in both English and Metric systems. This flexibility ensures that users can work with their preferred measurement standards.

### What are the common properties displayed for refrigerants?

For each selected refrigerant, the app displays common properties such as oil type, GWP (Global Warming Potential), composition, critical temperature, boiling temperature, and more. This provides a comprehensive overview of refrigerant characteristics.

### Is ASHRAE HVAC PT Chart available on multiple devices?

Yes, ASHRAE HVAC PT Chart is a universal app that works on both the iPad and iPhone. It adjusts its screen size according to the device, ensuring an optimized experience on various iOS screen sizes.

### What is the price of ASHRAE HVAC PT Chart?

ASHRAE HVAC PT Chart is a paid application, available for $0.99. This one-time purchase grants access to all its features and data.

## Version history (last 4 releases)

### 4.9 — 2020-08-18

1. Updated the app launch screen per new Apple iOS guidelines.
2. Updated Google Analytics and Crashlytics

### 4.7 — 2020-05-13

1. Updated launch screen
2. Additional refrigerants
3. Optimized for iOS 13 and iPhone 11

### 1.7 — 2017-11-06

1. Updated ASHRAE logo
2. Updated for iOS 11

### 1.0 — 2017-09-14

No release notes.

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## More apps by ASHRAE, Inc.

- [HVAC ASHRAE 62.1](https://appshunter.io/ios/app/hvac-ashrae-621/id375374905)
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- [High Performing Buildings](https://appshunter.io/ios/app/high-performing-buildings/id957515406)
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All apps by ASHRAE, Inc.: https://appshunter.io/developer/375374912

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-20.*