SecondShift wraps the leading AI troubleshooting tools — and adds a human diagnostic bench on top — into one managed service for HVAC, plumbing, electrical and appliance repair operators.
The number your service manager already reports to ownership.
Return trips because the first diagnosis was wrong.
From voice note, photo, or fault code — to ranked causes.
Multi-vertical
One diagnostic surface across four verticals. Inputs stay vertical-specific — voice, photos, fault codes, amp and pressure readouts — and the assistant returns ranked probable causes, the procedure, and the parts the tech should already have on the truck.
> RELAY STATE ........ OPEN / OPEN > DELTA-T (RETURN) ... 4.1 °F (LOW) > COMPRESSOR AMPS ... 9.4 / 12.0 > FAULT .............. LOW CHARGE (74%)
> STATIC PSI ......... 42 / 80 > LEAK POINT ......... JOINT-3 (CO) > FLOW AT FIXTURE .... 0.6 GPM > PART ............... 1/2" CTS COUPLING
> OCPD ............... 20A · CH:14 > GFCA TRIPS ........ 3 IN 9 MIN > NEUTRAL-GND VOLT ... 2.4 V > CAUSE .............. N-G BOND AT SUB
> ERROR CODE ......... E5 (DRAIN) > DRAIN PUMP Ω ....... OPEN > BOARD REV .......... W10876636 > PART ............... DRAIN PUMP KIT
How it works
Setup follows a familiar $997-style engagement with a recurring subscription. Once configured, the assistant runs inside your existing dispatch and CRM workflow — no extra app for the tech to open.
Voice note, photos, fault codes, sensor and relay readouts. Your techs do not change a thing about how they already document a job.
aiventic, Aquant, Sia Agents, FixGrid and BizDevXperts run in parallel; the assistant returns ranked probable causes, a step-by-step procedure, and the parts it expects you to need.
On callbacks, high-stakes warranty work, or a model below confidence, a human diagnostic specialist reads the transcript and calls the tech back.
// The Bench
The diagnostic assistant does the first pass — fast, ranked, and good enough most days. But when uncertainty crosses the line, or whenever a callback is on the line, a human diagnostic specialist on the SecondShift bench reads the transcript, calls the tech back if needed, and renders a second opinion.
The agency is run by tradespeople who watched generic field-service AI miss what a tech actually diagnoses on-site. The bench is the difference between an assistant and a built-for-the-trade one.
Operated by a working trades identity who knows what a tech actually sees at the unit.
Stack & distribution
SecondShift sits one layer up from horizontal field-service AI — same tools, tuned per vertical, run through the bench, and delivered inside the field-service management system you already pay for.
FAQ
If yours isn’t here, the bench will answer it.
Get trucks back on the road
One ticket in — a ranked set of probable causes, the procedure, and the parts, with a human-signed second opinion when it matters.
Direct line · secondshift-3@polsia.app