HVAC RefCharge vs HVAC/R AI Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HVAC RefCharge
This app helps HVAC technicians quickly calculate refrigerant superheat and subcool levels. It supports over 100 refrigerants and offers interactive adjustments for precise charging decisions. Features include atmospheric pressure adjustments and unit customization.
- Superheat and subcool calculations
- Supports 100+ refrigerants
- Interactive slider for adjustments
- Atmospheric pressure compensation
- Customizable input types
- Project photo assignment
- Email report generation
- English/Metric unit display
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The HVAC RefCharge app is a refrigerant charging calculator that allows HVAC technicians to perform superheat and subcool refrigerant charge calculations on-the-fly. This app includes pressure/temperature data for over 100 refrigerants. This is a universal app that works on both the iPhone and iPad. This app now includes the HVAC Equipment Locator. Click here for details: http://bit.ly/1yTq539 The following is a list of additional features: 1. Perform superheat refrigerant charge calculations for 100+ different refrigerants. Input the indoor wet-bulb and outdoor dry-bulb temps. to get the target superheat temperature. Then, specify the suction line temperature and pressure to get the actual superheat temperature. The difference tells you whether to charge or not. Also, the app auto-assigns the dew version of azeotropic refrigerant to superheat, if applicable. 2. Perform subcool refrigerant charge calculations for 100+ different refrigerants. Input the indoor wet-bulb and outdoor dry-bulb temps. to get the target subcool temperature. Then, specify the liquid line temperature and pressure to get the actual subcool temperature. The difference tells you whether to charge or not. Also, the app auto-assigns the bubble version of azeotropic refrigerant to subcool, if applicable. 3. Use an interactive slider control to increase or decrease all values and immediately observe calculated results. Also, the slider control allows for "incremental" changes so you can ever-so-slightly change values to observe newly calculated results. 4. Specify atmospheric pressure (other than standard 14.7 psi) so that calculated pressures are adjusted for high elevations like those in Denver and elsewhere. 5. Customize input types so that you can specify manufacturer-specified target superheat/subcool or input indoor dry-bulb/indoor relative humidity in place of indoor wet-bulb temperature. 6. Take a photo and assign it to the project 7. Send an email that includes all inputs, results, and the photo with a custom message 8. Display input and result values in either English or Metric units
HVAC/R AI Pro
This app provides HVAC and refrigeration technicians with AI-powered diagnostic assistance, duct sizing calculations, and job estimation tools. It offers step-by-step troubleshooting, airflow analysis, and photo-based equipment support to streamline service calls.
- AI Diagnostic Assistant
- Step-by-step troubleshooting
- Duct sizing calculations
- Airflow analysis
- Job estimate tool
- Photo-based equipment support
- Chat history
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HVAC/R AI Pro is a practical field companion for HVAC and refrigeration technicians. Get help troubleshooting a stubborn system, checking airflow, reading equipment labels, or putting together an estimate—all in one place. Built by a field tech for field techs, it combines conversational AI with useful trade tools to help you work through the job in front of you. AI Help on the Job Describe what you’re seeing, share your readings, or add a photo to get help working through the problem. - Step-by-step troubleshooting and diagnostic checklists - Guidance on superheat, subcooling, static pressure, and airflow - Photo-based equipment and system support - Answers tailored to your technician experience level - Saved chats so you can pick up where you left off - For Pro users, AI can search your saved past chats for relevant information Equipment Scanner Spend less time typing information from a unit label. Take or choose a photo, review the detected equipment details, and bring them into Chat when you’re ready. - Capture model, serial, refrigerant, and electrical details - Review and edit the information before using it - Add equipment context to your conversation HVAC and Refrigeration Tools Keep everyday calculations close at hand. - Round and rectangular duct sizing - Static pressure and friction rate calculations - Refrigerant pressure-temperature reference - Walk-in refrigeration box-load calculations - Saved airflow jobs Repair and Replacement Estimates Build a starting point for your next estimate using job details, location, labor rate, and markup. Save estimates and return to them when you need them. Made for Your Workday Whether you’re learning the trade, diagnosing service calls, checking an installation, or planning repair work, HVAC/R AI Pro gives you a place to ask questions and keep useful job information together. Subscription Options Basic For lighter use, with monthly allowances for AI chat, image analysis, and estimates, plus saved chats, estimates, and airflow jobs. Pro For regular field use, with everything in Basic, higher usage allowances, and AI search across your saved past chats. Usage limits and fair-use terms apply. Available plans and pricing are shown in the app before purchase. Some features require a paid subscription. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. Payment is charged to your Apple Account. Manage or cancel your subscription in your App Store account settings. AI can make mistakes. Always verify important information and follow manufacturer instructions, local codes, and proper safety procedures. Estimates and calculations are planning aids and require professional judgment. Privacy Policy: https://hvacrai.com/privacy Terms of Use: https://hvacrai.com/terms
Screenshots
Verdict
The clearest difference is price: HVAC/R AI Pro at Free against HVAC RefCharge's $9.99. HVAC/R AI Pro also leads on update cadence (every 5 weeks vs every 11 months). On ads, in-app purchases, device support and iOS requirement 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
HVAC/R AI Pro is free to download; HVAC RefCharge costs $9.99 up front. HVAC RefCharge sells 1 one-off in-app purchase and HVAC/R AI Pro sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.
HVAC RefCharge ships an update every 11 months, HVAC/R AI Pro every 5 weeks. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.
| Parameter | HVAC RefCharge | HVAC/R AI Pro |
|---|---|---|
| Price | $9.99 | Free — better |
| Rating | — | 4.6 (5 ratings) — better |
| Positive reviews | 33.3% of reviews | — |
| Number of ratings | — | 5 — better |
| Update frequency | Every 11 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Paid | Freemium — better |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 | 16.4 — better |
| Further details — not scored | ||
| Size | 6 MB | 94 MB |
| Age rating | +4 | 17+ |
| Developer | Carmel Software Corporation | Cowboy G Industries LLC |
Customer experience
HVAC RefCharge
HVAC/R AI Pro
In-app purchases
HVAC RefCharge
- HVAC Equipment Locator$9.99
HVAC/R AI Pro
- Basic Plan$9.991 Month
- Pro3 Days trial$19.991 Month
Questions
Is HVAC RefCharge free?
Is HVAC/R AI Pro free?
Do HVAC RefCharge or HVAC/R AI Pro have ads?
Which is updated more often, HVAC RefCharge or HVAC/R AI Pro?
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