# HVAC PT Chart vs Baker HVAC Pro+

The clearest difference is rating: Baker HVAC Pro+ at 4.9 against HVAC PT Chart's 4.0. Baker HVAC Pro+ also leads on in-app purchases (none vs 1) and review sentiment (85% vs 56%). HVAC PT Chart's advantage is iOS requirement (13.1 vs 16.0). On price, ads and device support there is nothing between them.

Both are free to download. HVAC PT Chart sells 1 one-off in-app purchase. Baker HVAC Pro+ asks for nothing beyond the download.

Baker HVAC Pro+ holds the better App Store score, 4.9 against 4.0. That said, the two scores are not equally well evidenced: Baker HVAC Pro+ has 587 ratings behind it against 8, so its average is the more settled of the two. Written reviews point the same way: 56% of HVAC PT Chart's written reviews are positive against 85% of Baker HVAC Pro+'s.

HVAC PT Chart ships an update every 4 months, Baker HVAC Pro+ monthly. The most recent releases landed on September 9, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | HVAC PT Chart | Baker HVAC Pro+ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (8 ratings)](https://appshunter.io/ios/app/hvac-pt-chart/id508212589/reviews) | **[4.9 (587 ratings)](https://appshunter.io/ios/app/baker-hvac-pro-plus/id511192312/reviews)** |
| Number of ratings | 8 | **587** |
| Positive reviews | 55.6% of reviews | **85.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Monthly** |
| Monetization | **Free** | Ad-supported |
| Size | 27 MB | 165 MB |
| Requires iOS | **13.1** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Carmel Software Corporation](https://appshunter.io/developer/317970398) | [Watsco, Inc.](https://appshunter.io/developer/510378878) |

## What reviewers say

### HVAC PT Chart

[App page](https://appshunter.io/ios/app/hvac-pt-chart/id508212589)

This tool provides HVAC technicians with instant access to pressure and temperature data for over 100 refrigerants. It allows users to input one value to find the other, view detailed refrigerant properties, and email comprehensive charts and data.

**Highlights:** Pressure/temperature lookup for 100+ refrigerants, Input temperature to find pressure, or vice versa, Slider control for precise value selection, Email complete PT chart lists and refrigerant properties, Display common refrigerant properties, Adjust for atmospheric pressure based on city elevation, English and Metric unit options

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HVAC Equipment Locator | $9.99 | one-time |


### Baker HVAC Pro+

[App page](https://appshunter.io/ios/app/baker-hvac-pro-plus/id511192312)

This app provides HVAC/R professionals with on-the-go access to product information and essential tools. It features real-time order tracking, a duct calculator, warranty verification, and branch location details. Users can also search for parts, view technical documents, and receive special offer notifications.

**Highlights:** Real-time order status, Duct calculator, Product availability and pricing, Warranty registration verification, Parts and model search, Technical document access, Branch locator and directions

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Time saver
- 👍 Easy to find information
- 👍 Great for ordering parts
- 👍 Helpful for checking stock
- 👍 Useful for customer warranties

**What reviewers complain about**

- 🐛 Error messages
- 🐛 App not working
- ⚠️ Too many alerts
- ⚠️ Annoying alerts

**Reported bugs**

- App not working anymore
- Error messages

**Requested features**

- Add R448A to P/T calc
- Tie account to app for pricing


## Frequently asked questions

### Is HVAC PT Chart free?

HVAC PT Chart is free to download, with in-app purchases available.

### Is Baker HVAC Pro+ free?

Baker HVAC Pro+ is free to download, with no in-app purchases.

### Which has better reviews, HVAC PT Chart or Baker HVAC Pro+?

Baker HVAC Pro+ is rated higher. HVAC PT Chart averages 4.0 out of 5 from 8 ratings, while Baker HVAC Pro+ averages 4.9 from 587 ratings.

### Do HVAC PT Chart or Baker HVAC Pro+ have ads?

Neither HVAC PT Chart nor Baker HVAC Pro+ shows ads.

### Which is updated more often, HVAC PT Chart or Baker HVAC Pro+?

HVAC PT Chart ships an update every 4 months, and Baker HVAC Pro+ monthly. Most recently, HVAC PT Chart was updated on September 9, 2026 and Baker HVAC Pro+ on September 26, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*