Comparison

HVAC Toolkit Ultimate vs HVAC Super Tech

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

Head to head
About

HVAC Toolkit Ultimate

This comprehensive application offers a suite of tools for HVAC professionals, including load calculations, equipment tracking, refrigerant charts, duct and pipe sizing, and psychrometric analysis. It consolidates multiple functionalities into a single, powerful utility for field and office use.

Highlights
  • Residential load calculations
  • Equipment nameplate data tracking
  • Refrigerant pressure-temperature charts
  • Superheat and subcool calculations
  • Duct and pipe sizing analysis
  • Psychrometric calculations
  • Steam table property calculations
Features
Read full description

This may just be the only HVAC app you will ever need. The HVAC Toolkit Ultimate from Carmel Software is a universal app that works on both the iPhone and iPad. It is the essential app for anyone in the HVAC industry. It is a compilation of most of the individual iPhone and iPad applications offered by Carmel Software plus bonus software. If you bought each of these apps separately, it would cost more than 2 times what the price of this app is. It includes: 1. HVAC Residential Load Calc HD (iPad version) 1. HVAC Residential Load Calcs (iPhone version) 1. HVAC Equipment Locator 2. HVAC PT Chart 3. HVAC Refrigerant Charge 4. HVAC Duct Sizer 2. HVAC Quick Load 6. ASHRAE Ventilation Calcs (iPhone version) 7. Psychrometrics 8. Steam Tables 9. HVAC Pipe Sizer - Liquid 10. HVAC Pipe Sizer - Steam 11. HVAC Pipe Sizer - Gas Low 12. HVAC Pipe Sizer - Gas High The "HVAC Residential Load Calcs" module allows you to perform comprehensive HVAC block and room-by-room load calculations for small commercial and residential buildings. You can easily use this module out in the field by taking advantage of the simplicity and power of the iPhone or iPad, and then email results back to your office. The "HVAC Equipment Locator" module allows you to track, share, and customize your equipment nameplate and maintenance data. The version here includes the ability to customize your input screens (this is usually an in-app purchase on the free stand-alone version of Locator, but it is included here). The "HVAC PT Chart" module allows you to easily view the pressure-temperature properties of 100 refrigerants. Think of this app as a digital version of the paper PT charts that you may have carried around with you in the past. The "HVAC Refrigerant Charge" module allows you to perform superheat and subcool refrigerant charge calculations on-the-fly. This app includes pressure-temperature data for over 100 common refrigerants including azeotropic (bubble/dew) versions of refrigerants. The "HVAC Duct Sizer" module allows you to perform quick and simple duct sizing analysis. You can specify the total airflow in CFM (or L/s), the aspect ratio and one of either the velocity of air or the friction loss per 100 feet (30 meters). The results include both the exact and rounded height and width (or diameter) dimensions and the calculated velocity and friction loss. In addition, you can calculate for a range of duct sizes by specifying minimum and maximum friction loss and airflow values. The "HVAC Quick Load" module allows you to quickly calculate total heating and cooling loads for a wide variety of building types. The "Psychrometrics" module allows you to easily perform single-state and mixed-air HVAC psychrometric calculations for up to 23 different combinations of input parameters. The "Steam Tables" module allows you to calculate the properties of saturated or superheated steam by specifying 2 input properties. This module is also part of the "Pipe Sizer - Steam" module discussed below. The "ASHRAE Ventilation Calcs" module allows you to perform comprehensive minimum ventilation calculations for a wide variety of commercial buildings based upon ASHRAE Standard 62.11-2007 and 2010/2013 versions. The "HVAC Pipe Sizer - Liquid" module allows you to size a pipe run for many different types of liquids (or fluids), pipe material and fitting types. The "HVAC Pipe Sizer - Steam" module allows you to size a steam pipe run, and it also includes a bonus steam table calculator. The "HVAC Pipe Sizer - Gas Low and Gas High" modules allows you to quickly size a simple low (less than or equal to 1.5 psi) and high (greater than 1.5 psi) pressure gas piping system by inputting a number of piping and gas properties. All values can be displayed in English (IP) and Metric (SI) units. We also offer all of the above modules as individual apps, too.

About

HVAC Super Tech

This app provides certified-level HVAC technical support, offering fast troubleshooting for error codes and system faults. It features smart image analysis for diagrams and hands-free voice assistance for technicians.

Highlights
  • Fast error code diagnosis
  • System fault analysis
  • Image analysis of diagrams
  • Hands-free voice commands
  • 24/7 technical support
  • All manufacturer brands supported
Features
Read full description

HVAC Super Tech is the only mobile app that brings accurate certified-level HVAC expertise straight to your phone! Fast and Accurate Troubleshooting •Lightning-fast diagnosis of error codes, pressure/temperature readings, analysis, and system faults •Get clear, step-by-step instructions without flipping through manuals, or getting lost in web searches with unreliable information Smart Image & Diagram Analysis •Snap photos of wiring diagrams, circuit boards or equipment panels. Our OCR feature reads, annotates and guides you in real time. •Identify components and problem areas with precision. Hands-Free Voice Assistance •Use voice commands to ask questions while you work, no need to touch your phone with greasy gloves. Why HVAC Super Tech? •Built by industry-certified and seasoned HVAC professionals with decades of knowledge, experience, and resources in the building trades industry, HVAC Super Tech is the most valuable technical support app available! •Cost less than a day's lunch per week! Tired of waiting on a phone call, trying to find the manual online, or reaching out to multiple sources because of manufacturer/brand specific information? •HVAC Super Tech provides fast 24.7 technical support for all manufacturer brands of equipment and all building systems •No more being in the dark in those middle of the night service calls With HVAC Super Tech you’ll: •Reduce call-back rates and equipment downtime •Increase first-visit fix rates and billable hours •Empower less experienced techs with expert-level guidance, increasing knowledge and value along the way •Reduced time spent on service calls •Reduces having to add more technicians in high demand seasons, by making technicians more efficient •Build you and your companies reputation and have stronger relationships with clients Download now and transform every service call into a smooth, efficient and profitable experience. Your ultimate, single source 24.7 HVAC technical support is here and the value never ends! *Subscription required for app access. •Apple’s standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ •Privacy Policy: https://buildingsolutionstechnicalservices.com/#hvac-super-tech-app-privacy-policy

Screenshots

HVAC Toolkit Ultimate4 screens
HVAC Super Tech4 screens

Verdict

The call

The clearest difference is review sentiment: HVAC Super Tech at 100% against HVAC Toolkit Ultimate's 40%. HVAC Super Tech also leads on price (Free vs $59.99) and rating (5.0 vs 3.0). HVAC Toolkit Ultimate's advantage is in-app purchases (none vs 3) and iOS requirement (13.0 vs 16.6). On ratings volume, ads 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

HVAC Super Tech is free to download; HVAC Toolkit Ultimate costs $59.99 up front. HVAC Super Tech sells 3 in-app purchases, starting at $29.99 per month. HVAC Toolkit Ultimate asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

HVAC Super Tech holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 4 and 5 respectively. Written reviews point the same way: 40% of HVAC Toolkit Ultimate's written reviews are positive against 100% of HVAC Super Tech's.

UpkeepUpdate frequency

HVAC Toolkit Ultimate ships an update every 6 months, HVAC Super Tech fortnightly. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.

Scorecard7 real differences · 3 level
HVAC Toolkit Ultimate versus HVAC Super Tech: the parameters behind the verdict, then further details
ParameterHVAC Toolkit UltimateHVAC Super Tech
Price$59.99Free — better
Rating3.0 (4 ratings)5.0 (5 ratings) — better
Positive reviews40.0% of reviews100.0% of reviews — better
Number of ratings45 — better
Update frequencyEvery 6 monthsFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid — betterSubscription
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better16.6
Further details — not scored
Size59 MB21 MB
Age rating4+17+
DeveloperCarmel Software CorporationBUILDING SOLUTIONS TECHNICAL SERVICES LLC

Customer experience

HVAC Toolkit Ultimate

All ratings4 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews15 reviews
Positive40.0%
Neutral6.7%
Negative53.3%

HVAC Super Tech

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

HVAC Toolkit Ultimate

No in-app purchases

3 purchases

HVAC Super Tech

Subscriptions2
  • Pro Level-Monthly Subscription7 Days trial$29.991 Month
  • Pro Level-Yearly Subscription$199.991 Year
One-time1
  • Part Timer-30 Day Access$49.99

Questions

Is HVAC Toolkit Ultimate free?
HVAC Toolkit Ultimate costs $59.99, with no in-app purchases.
Is HVAC Super Tech free?
HVAC Super Tech is free to download, with in-app purchases available.
Which has better reviews, HVAC Toolkit Ultimate or HVAC Super Tech?
HVAC Super Tech is rated higher. HVAC Toolkit Ultimate averages 3.0 out of 5 from 4 ratings, while HVAC Super Tech averages 5.0 from 5 ratings.
Do HVAC Toolkit Ultimate or HVAC Super Tech have ads?
Neither HVAC Toolkit Ultimate nor HVAC Super Tech shows ads.
Which is updated more often, HVAC Toolkit Ultimate or HVAC Super Tech?
HVAC Toolkit Ultimate ships an update every 6 months, and HVAC Super Tech fortnightly. Most recently, HVAC Toolkit Ultimate was updated on November 1, 2026 and HVAC Super Tech on October 30, 2026.

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