# HVAC Psych HD — HVAC Psychrometric Chart

> Interactive psychrometric chart for iPad with customizable plots and export options. (iPhone/iPad app by Carmel Software Corporation.)

- Source: https://appshunter.io/ios/app/hvac-psych-hd/id582857321 (this page in markdown: same URL + `.md`)
- Developer: [Carmel Software Corporation](https://appshunter.io/developer/317970398)
- Category: Productivity, Business
- Price: $29.99
- Age rating: 4+
- Requires: iOS 13.0 · 2 MB
- Languages: American English
- Released: 2013-05-24
- Data updated: 2026-06-19
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/hvac-psych-hd/id582857321/reviews.md

## What is HVAC Psych HD?

The HVAC Psychrometric Chart app is the first truly interactive graphical psychrometric chart for the iPad, and it includes both IP and SI units. This app is now optimized for iOS 18.x.

Using your finger, you can easily plot HVAC and other psychrometric processes on the iPad screen while you are out in the field, save the graphs, and then email the graph and results to yourself or clients. The HVAC Psych Chart app includes the following features and functionality:

1. Displays a fully customizable psychrometric chart in both landscape and portrait modes.

2. Allows you to customize the graph in many different ways including specifying the psychrometric chart line colors, chart background color, hide/display status of chart lines, point colors, process line colors, units of graph values, and the min/max limits of the chart.

3. Using your finger, you can plot as many points as you want on the screen. As you move your finger around the graph, the psychrometric properties at the top of the screen dynamically update . In addition, you can double-tap a point to display the point properties and then edit them.

4. Create psychrometric processes by plotting points then connecting them with process lines. Also, create custom labels anywhere on the chart.

5. After you have completed creating the chart, you can email a list of all the points and their properties along with a PDF of the chart, itself.

6. Create an unlimited number of psychrometric chart projects. Also, you can create templates that you can reuse over and over again.

7. Zoom in or out of the chart by "pinching" the iPad screen so as to view items in more detail.

8. Display sensible heat ratio (SHR) line

9. Display psych process line as curved along 100% RH line.

## Key features

- Interactive psychrometric chart
- IP and SI unit support
- Customizable chart appearance
- Finger-based plotting and editing
- Save and email charts/data
- Unlimited project creation
- Zoom and pinch functionality

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/hvac-psych-hd/id582857321/reviews.md

### 1/5 — Dirt stay away

*2025-01-04*

This app is absolute garbage, units are incorrect when swapping from imperial to metric, it’s clunky and wont even email you results. Do not buy this product !

### 1/5 — Duplication of Psychrometric Software

*2018-07-30*

This app is a duplicate of another app by the same developer.

Psych HD & ASHRAE Psych

Is this legal?

## Frequently asked questions about HVAC Psych HD

### What is HVAC Psych HD?

HVAC Psych HD is an interactive psychrometric chart application designed for the iPad. It allows users to plot and analyze HVAC processes with both IP and SI units, offering extensive customization and export capabilities.

### What devices does HVAC Psych HD support?

HVAC Psych HD is exclusively designed for and supports iPads. It is optimized for the latest iOS versions, ensuring a seamless experience on Apple's tablet devices.

### How much does HVAC Psych HD cost?

HVAC Psych HD is a paid application. The current price is $29.99, offering a one-time purchase for full access to all its features without ongoing subscription fees.

### Can I save and share my psychrometric charts with HVAC Psych HD?

Yes, you can save an unlimited number of psychrometric chart projects within HVAC Psych HD. The app also allows you to email a PDF of the chart along with a list of all points and their properties to yourself or clients.

### Does HVAC Psych HD have ads?

No, HVAC Psych HD does not contain advertisements. As a paid application, it provides an ad-free experience, allowing users to focus on their psychrometric analysis without interruptions.

### How often is HVAC Psych HD updated?

The app was last updated on March 11, 2025, indicating active development and support. Users can expect ongoing improvements and optimizations for newer iOS versions.

### What are the main benefits of using HVAC Psych HD for HVAC professionals?

HVAC Psych HD offers a truly interactive graphical psychrometric chart for field use. Its ability to plot processes, customize charts, and easily share results makes it a valuable tool for on-site analysis and client communication.

### Is HVAC Psych HD suitable for beginners in psychrometrics?

While designed for professionals, the interactive nature of HVAC Psych HD can be beneficial for learning. Users can experiment with plotting points and observing property changes, aiding in understanding psychrometric principles.

## Version history (last 5 releases)

### 4.5 — 2025-03-11

1. Fixed IP/SI display issues on iOS 16+
2. Fixed the issue with humidity ratio labels not displaying on iOS 16+
3. Added "share" icon so can email, text, and print reports
4. Fixed issue with proper humidity ratio units not displaying
5. Optimized for iOS 18
6. Updated help

### 4.0 — 2025-01-23

1. Fixed issue with email not working on latest iOS 18.x. You can now open the app while in the "More Space" Display Zoom mode option under Display & Brightness.
2. Updated help.

### 3.95 — 2023-02-16

1. Optimized for iOS 16
2. Updated user-interface
3. Works with iPad Mini
4. Updated help

### 3.5 — 2019-12-19

1. Fixed issue with negative numbers not showing in iOS 13.
2. Fixed issue so that it works in "dark mode" in iOS 13
3. Updated help

### 3.0 — 2019-07-15

1. Compiled for latest iOS 13
2. Updated help

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All apps by Carmel Software Corporation: https://appshunter.io/developer/317970398

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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 2026-06-19.*