Pre Arrival HVAC Diagnostics

Diagnostic briefs built on factory documentation,
so your dispatcher and technician know the likely cause before the truck rolls.

See the Software → ▶ Open the Live Interactive Demo

Diagvance workflow: online service form to AI agent, then dispatcher alert, technician brief and customer email

Diagvance is diagnostic software for HVAC contractors, built on factory documentation.

Our AI maps the model, control board, fault code and symptoms to the factory procedure for that equipment, before the technician arrives.

AI Diagnostic EngineShadow Mode PilotField Measurements

HVAC Fault Code Diagnostics

AI Diagnostic Engine

Enter the equipment model, control board and fault code. Get ranked likely causes with the factory test sequence for each.

No generic code lookup. Model specific answers from the manual.

Model specific troubleshootingRanked likely causesFactory test sequence

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Example output, illustrative

Model: Gas furnace

Control board: Board revision

Fault code: Ignition lockout

Flame sensor signal lowFactory test: measure flame current at the control

Most likely

Gas valve not energizingFactory test: check voltage at the valve during ignition

Likely

Pressure switch not closingFactory test: verify switch continuity with inducer running

Possible

Return visits on eligible calls, illustrative goal

Free Pilot Program

Shadow Mode Pilot

We run beside your current process on 30 to 50 eligible calls. Nothing changes for your dispatchers or technicians. Every brief is timestamped before the visit and compared with what the technician found. For HVAC businesses with 1 to 15 technicians, owner operators included.

Zero workflow change30 to 50 eligible callsResults you can check

Now selecting 3 design partners

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Coming Next

On the Roadmap: Field Measurements

Next, technician meter readings such as flame signal, pressure switch state and voltage will confirm the likely cause on site, entered on the phone. No proprietary hardware.

Meter readings on the phoneConfirms the likely causeImproves the database

In Development

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Planned: how field measurements will connect

GET STARTED

See It on the Equipment You Service

Book a demo, or apply to be one of 3 design partners in the free shadow mode pilot.

✉ info@diagvance.com

☎ (236) 971-1260

Apply for the Pilot