Free AI for HVAC technicians in 2026
The short answer
You can get a long way for free. Two manufacturers' apps are free outright, two chat tools have free plans, and the leading diagnostics app is free without its AI. What no free download gives you is the history of the unit or the report written for you. Kenner, which we make, does both and is free while it is in beta, but it starts with a pilot for a team, not a download.
- Copeland Mobile with Scout AI: free, with Scout AI answering from Copeland's documentation.
- Carrier Service Technician app: free, with an AI assistant in beta and a manual search for commercial alarms.
- ChatGPT: a free plan with photo and voice input and limits on uploads.
- HVAC/R AI Pro: a free plan with a small weekly AI allowance that does not save chats.
- measureQuick mQ Assist: the diagnostics app is free. The AI is in the $49 a month tier.
- Kenner: free while in beta, for service teams. It starts with a demo and a two-week pilot, not a download. Our product.
What free covers
Theory, fault code meanings, a manufacturer's bulletins, calculators and live measurement are all available without paying. For a technician learning the trade or working alone, that is a real toolkit.
What it does not
The free apps and plans do not know your company's jobs, they do not write the service report into your system, and they limit how much you can ask. Those are the things a service company pays for, and they are where the tools built for teams earn their price.
The tools side by side
| Tool | Type | Answers from | How technicians use it | Writes the job report | Published price |
|---|---|---|---|---|---|
| Copeland Mobile with Scout AI | Manufacturer's assistant | Copeland's own bulletins, product information database and documents | The Copeland Mobile app and web version: chat, voice, and image or video upload | No | Free |
| Carrier Service Technician app | Manufacturer's assistant | Model number inputs and Carrier's content. Its Willis assistant searches official commercial manuals | A chat in the Carrier Service Technician app: enter a model number or an alarm code | Partly. Release notes describe AI pre-job summaries exported as PDF | Free |
| ChatGPT | General chatbot | What the model learned in training, web search, and the photos or files you give it | The ChatGPT app or website: typing, photos and spoken conversation. In the US and Canada also by phone, on 1-800-CHATGPT | No | Free plan. Plus is $20 per month pricing page |
| HVAC/R AI Pro | Troubleshooting app for individual technicians | The symptoms, readings, fault codes and photos the technician enters | An iPhone, Android and web app: chat, job photos and a unit-label scanner | No. Paid plans save chats, estimates and refrigerant logs inside the app | Free plan. Basic $10 and Pro $20 per month pricing page |
| measureQuick mQ Assist | Diagnostics app with AI | The live readings from the probes connected to the system in front of you | The measureQuick app, by voice or text, with Bluetooth tools attached | Yes. Reports and photo storage in mQ Cloud, with Premier Services | The app is free. mQ Assist is part of Premier Services at $49 per user per month pricing page |
| Kenner | Assistant on a knowledge graph of your own systems | Your company's own knowledge base, which Kenner builds: units, past jobs, alarms, parts and manuals from all your systems, linked in a knowledge graph | A normal phone call, or WhatsApp, iMessage, Teams or RCS. No new app | Yes. From a voice note, written back to your FSM, ERP or CRM | Free while in beta, starting with a two-week pilot for 5 to 10 technicians. Prices after the beta are not published |
Each tool has a full entry, with sources, in the main guide.
Questions and answers
Is Kenner free?
Yes, while it is in beta, but it is not a free app. It starts with a demo and a two-week pilot for five to ten technicians, and prices for after the beta are not published. It is built for service teams, not for a single technician.
Is the free version of ChatGPT good enough for HVAC?
For general questions, yes. Check its answers against the manual, and note that the free plan limits file uploads and voice.
Checked against
- Copeland Mobile with Scout AI: Copeland Mobile, Copeland Scout AI announcement, Copeland Mobile on the App Store
- Carrier Service Technician app: Carrier Service Technician on the App Store, Carrier Service Technician on Google Play
- ChatGPT: ChatGPT pricing, OpenAI help: ChatGPT Voice, OpenAI help: connected apps, OpenAI help: 1-800-ChatGPT
- HVAC/R AI Pro: HVAC/R AI Pro, HVAC/R AI Pro pricing, HVAC/R AI Pro troubleshooting app
- measureQuick mQ Assist: measureQuick mQ Assist, measureQuick pricing
- Kenner: getkenner.com