For HVAC Service Technicians ·
What you'll accomplish
Spending 15-20 minutes per call on documentation adds up fast. This guide sets up a saved ChatGPT prompt on your phone that turns rough job notes into a complete, professional service report in under 60 seconds. Paste your bullet points and you're done.
What you'll need
What you should see: A white chat interface with a message box at the bottom. Troubleshooting: If you have trouble signing up, try the ChatGPT app from the App Store or Google Play instead.
What you should see: A ChatGPT shortcut on your home screen that opens with one tap.
Open ChatGPT and start a new conversation. Type and send this message. It is your "setup" message that trains it for your needs:
"I'm an HVAC service technician. I'm going to give you quick notes from a service call, and I need you to turn them into a professional service report. The report should include: what equipment was serviced, what the problem was, what work was performed, any parts replaced with part numbers if I give them, system performance readings if I provide them, and recommendations for the customer. Keep it professional but easy for a homeowner to understand. Under 200 words unless the job is complex. Ready?"
ChatGPT will confirm it understands. Now you have a trained session.
After your next call, type your rough notes:
"Lennox XC21 3-ton, 2019. Customer said AC not cooling past 78. Found capacitor weak on blower motor. 15MFD tested at 10.2. Replaced with 15MFD capacitor (part 89M72). Cleaned condenser coils, heavy dirt. Checked refrigerant, pressures normal. System back to spec, blowing 58°F at registers. Recommend annual tune-up."
What you should see: A fully written 150-word service report ready to paste into ServiceTitan or Housecall Pro.
The problem with the free ChatGPT version is that each new session forgets your instructions. To fix this:
Now when you open a new ChatGPT session, you paste this prompt first, which takes 10 seconds.
Shortcut: With ChatGPT Plus ($20/month), you can use Memory or Custom Instructions so ChatGPT remembers your role every session without re-pasting.
Standard repair: "Write a service report for [equipment]. Found [problem]. Replaced [part]. System now [status]. Recommend [next step]."
Maintenance tune-up: "Write a service report for a [season] maintenance tune-up on [equipment]. Checked: [list]. Cleaned: [list]. Readings: [data]. System condition: [good/fair/needs attention]. Notes: [observations]."
No-problem diagnosis: "Write a service report where I diagnosed a customer complaint of [symptom] but found no fault. Explain what I checked and why the system is operating normally."
Emergency call: "Write a service report for an emergency no-heat call. Found [problem]. Temporary fix: [what you did to get them through the night]. Need to return with [parts] to complete repair."
Install documentation: "Write a job completion summary for installing a new [equipment]. Old system age: [X years]. New system specs: [brand/model/size]. Installation notes: [anything notable]."