AI for HVAC shops · Built in Arizona
An HVAC AI assistant that knows the trade.
Diagnostics, quotes, and customer messages for HVAC contractors, plus a text-back system so a missed call doesn’t become a lost job.
Why I built it
I’ve spent 30+ years in HVAC, in the field as a tech and on the phones running dispatch, customer calls, sales and quoting. I’ve seen both ends: the tech stuck on a problem in a 120° attic, and the customer who can’t get through. These tools are built around that work, not around a tech demo.
— Justin Carl, Justinsane Designs
What’s in the toolkit
Symptom diagnostics
Reads pressures by refrigerant, matches the pattern, and lists what to check, in order. Says what’s missing instead of guessing.
Quotes & repair vs. replace
First drafts of quotes and replace-or-repair comparisons your team can adjust before they go out.
Customer messages
Turns tech-speak into plain language for follow-ups, maintenance reminders, and explaining a repair.
Missed-call text-back
When nobody can pick up, the caller gets a text within seconds. It gathers their name, address, and problem, and alerts you.
A real answer from the toolkit
The question
The answer (trimmed for length)
Reading the numbers
Suction is above the normal 115–135 psig range, and discharge is far below the 400–450 psig expected at 95°F. Pattern: high suction, low discharge. The clean coil and running fan rule out poor condenser heat rejection. Superheat, subcooling, and amp draw are still needed, so these are things to check, not conclusions.
What to check, most likely first
- Most likely: compressor internal valve leak. It pumps poorly, so suction rises and discharge falls. Confirm with amp draw against the data plate and compressor tests.
- Possible: reversing valve leaking through (heat pump). Hot discharge gas bleeds to the suction side. Check the temperature split across the valve.
- Possible: metering device stuck open. Check superheat and subcooling. A very cold, sweating suction line points this way.
- Watch for floodback. High suction with low superheat can send liquid to the compressor. Check before running it long.
Severity
Urgent, not an emergency. The compressor can be damaged further, and the house isn’t cooling.
Try it yourself
Describe a real problem: pressures, symptoms, what’s been checked. You get 3 free questions every 24 hours.
AI-generated. A starting point for a qualified tech, not a substitute for one. Refrigerant and electrical work are for licensed, EPA 608-certified technicians.
Want it for your shop?
I’m setting up free private demos for a few Arizona HVAC companies: the full toolkit for your team, plus the missed-call text-back on your line.
Request a private demoOr email justin@justinsanedesigns.rocks