Comparison

ASHRAE HVAC PT Chart vs Trane® Technician

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

ASHRAE HVAC PT Chart

This app provides HVAC technicians with a comprehensive electronic pressure-temperature calculator for over 100 refrigerants. It allows for quick lookups, email sharing of data, and displays detailed refrigerant properties. The app is optimized for iOS devices and includes global city elevation data for accurate atmospheric pressure calculations.

Highlights
  • 100+ HVAC refrigerants
  • Pressure-temperature lookups
  • Email data sharing
  • Refrigerant properties database
  • Global city elevation data
  • English and Metric units
Features
Currently charting
Read full description

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

About

Trane® Technician

This app streamlines HVAC installation, commissioning, and service for technicians. It offers guided setup, real-time system monitoring, and remote configuration capabilities for smart thermostats. Access product literature and training resources to enhance daily work.

Highlights
  • Streamlined installation and commissioning
  • Real-time system monitoring and alerts
  • Remote configuration of smart thermostats
  • Guided installation with wiring diagrams
  • Access to product literature and training
  • Dealer Remote Configuration (DRC)
Features
Read full description

The Trane Technician (formerly Trane Diagnostics) Mobile App is specifically designed to assist Service Technicians and HVAC companies by streamlining the installation, commissioning, and service processes. By seamlessly integrating with Link Systems, Link Zoning, and Link Relay Panels, the app enhances the overall installation experience. Its user-friendly interface provides step-by-step guidance to HVAC technicians, simplifying the setup process. Moreover, it ensures secure access to customer data and enables real-time monitoring of system alerts, improving problem diagnosis efficiency. With the Dealer Remote Configuration (DRC) functionality, HVAC companies can remotely access and monitor homeowners' Link or smart thermostats, enabling proactive servicing, configuration, and diagnostic support to ensure optimal HVAC system performance. The app's Guided Installation feature simplifies the generation of accurate wiring diagrams and dipswitch settings. Additionally, it offers access to product literature, training videos, and calculators that further support technicians in their day-to-day work. Please note, this app is not compatible for onsite BLE connections with Trane ComfortLink™ II systems.

Screenshots

ASHRAE HVAC PT Chart4 screens
Trane® Technician4 screens

Verdict

The call

The clearest difference is price: Trane® Technician at Free against ASHRAE HVAC PT Chart's $0.99. Trane® Technician also leads on rating (4.8 vs 1.0) and review sentiment (25% vs 0%). ASHRAE HVAC PT Chart's advantage is chart position (#85 vs unranked) and iOS requirement (11.0 vs 15.1). On ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Trane® Technician is free to download; ASHRAE HVAC PT Chart costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Trane® Technician holds the better App Store score, 4.8 against 1.0. That said, the two scores are not equally well evidenced: Trane® Technician has 223 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 0% of ASHRAE HVAC PT Chart's written reviews are positive against 25% of Trane® Technician's.

UpkeepUpdate frequency

ASHRAE HVAC PT Chart ships an update every 3 months, Trane® Technician every 5 weeks. Both last shipped on November 8, 2026.

Scorecard8 real differences · 3 level
ASHRAE HVAC PT Chart versus Trane® Technician: the parameters behind the verdict, then further details
ParameterASHRAE HVAC PT ChartTrane® Technician
Price$0.99Free — better
Rating1.0 (2 ratings)4.8 (223 ratings) — better
Positive reviews0.0% of reviews25.0% of reviews — better
Number of ratings2223 — better
Update frequencyEvery 3 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
Best chart rank#85 — better—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better15.1
Further details — not scored
Size24 MB233 MB
Age rating+44+
DeveloperASHRAE, Inc.TRANE U.S. INC

Customer experience

ASHRAE HVAC PT Chart

All ratings2 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews4 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Trane® Technician

All ratings222 ratings
Positive95.9%
Neutral1.4%
Negative2.7%
Written reviews4 reviews
Positive25.0%
Neutral0.0%
Negative75.0%

In-app purchases

None

ASHRAE HVAC PT Chart

No in-app purchases

None

Trane® Technician

No in-app purchases

Questions

Is ASHRAE HVAC PT Chart free?
ASHRAE HVAC PT Chart costs $0.99, with no in-app purchases.
Is Trane® Technician free?
Trane® Technician is free to download, with no in-app purchases.
Which has better reviews, ASHRAE HVAC PT Chart or Trane® Technician?
Trane® Technician is rated higher. ASHRAE HVAC PT Chart averages 1.0 out of 5 from 2 ratings, while Trane® Technician averages 4.8 from 223 ratings.
Do ASHRAE HVAC PT Chart or Trane® Technician have ads?
Neither ASHRAE HVAC PT Chart nor Trane® Technician shows ads.
Which is updated more often, ASHRAE HVAC PT Chart or Trane® Technician?
ASHRAE HVAC PT Chart ships an update every 3 months, and Trane® Technician every 5 weeks. Most recently, ASHRAE HVAC PT Chart was updated on November 8, 2026 and Trane® Technician on November 8, 2026.

Other comparisons