MEET REX — YOUR AI TECH

The AI that sits shotgun with every tech.

Rex is the AI engine behind ONEREQ PRO. He scans data plates, diagnoses problems, matches parts, routes vendors and guides your techs through every job. He never calls in sick, never orders the wrong part, and works 24/7.

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98%First-Time Accuracy

3 hrsSaved Per Tech/Day

80%Fewer Wrong Parts

$450Avg Saved Per Mistake

"I never call in sick, never order the wrong part, and I work 24/7." — Rex

Meet the many sides of Rex

Rex adapts to every situation.

Guiding your techs with personality and purpose, on every step of every job.

Waving Rex

Welcomes you to the app

Thinking Rex

Analyzing your problem

Success Rex

Found the right parts!

Presenting Rex

Shows recommendations

Thumbs Up Rex

Job complete!

Rex's 4 core AI systems

Built into every screen. Every job.

AI Vision Analysis

Point your camera at any data plate. Rex reads model numbers, specs, and identifies equipment — even on faded or damaged plates.

Reads any data plate in seconds
Extracts model / serial / specs
Works on old & legacy equipment
Suggests manufacturer videos & docs

Smart Diagnostics

1,200+ diagnostic scenarios. Rex reads symptoms, returns likely causes ranked by confidence — with callback-prevention flags.

Example: Based on Carrier 24ACC636A003 symptoms: Low refrigerant (85% confidence), Bad capacitor (12%), Clogged filter (3%).

Vendor Intelligence

Rex knows which vendors carry which brands. Parts automatically route to the correct supplier — with warranty compliance built in.

Routes automatically: Carrier TXV Valve → Carrier Enterprise. 45/5 MFD Capacitor → HD Supply. R-410A → Johnstone Supply.

Smart Compatibility

Prevents incompatible parts orders across all trades before they cost you a return trip.

HVAC: Blocks 21" coil for 17.5" cabinet
Plumbing: Flags wrong inlet on water heater
Electrical: Validates breaker brand vs panel

Voice-to-Text + AI cleanup

Speak naturally. Rex writes professionally.

🎤 What the tech says

"checked the unit outside compressor running but not cooling, air handler filter is super dirty, drain pan has standing water, thermostat reads 82 but set to 72..."

✨ What Rex writes

"Inspected outdoor condensing unit. Compressor operational but system not producing adequate cooling. Found severely dirty air filter on indoor air handler. Drain pan contained standing water, indicating restricted condensate line. Thermostat showed 82°F indoor temperature against a 72°F setpoint."

Rex's involvement

Rex is on every step.

Preventing mistakes before they happen — not catching them after.

Customer Call

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Rex Scans Data Plate

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Rex Diagnoses

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Rex Recommends Parts

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Rex Checks Compatibility

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Rex Routes to Vendor

Rex AI chat — live example

A real conversation in the field.

Customer says not cooling. Compressor runs but no cold air. Unit is a Carrier 24ACC636A003.

Most likely: Low refrigerant (85%). Also: Bad capacitor (12%), Clogged filter (3%). Want me to pull the parts list?

Yes, full parts list. And check compatibility.

Found: R-410A (25 lb) — Johnstone Supply, in stock. TXV kit — Carrier Enterprise, OEM, warranty-compliant. Both match the model. Added to your requisition ✓

Write up the diagnosis for the customer.

Done. "Carrier 24ACC636A003 showing classic low-refrigerant symptoms — compressor runs, no cooling. Recommend leak test, TXV inspection, and recharge. Estimate attached." Ready for your approval.