Deterministic fault diagnosis.
Zero guesswork.
A professional field web app that computes ranked faults directly from your real gauge readings. No extra hardware to buy. Works completely offline in the deepest mechanical rooms.
AI does the paperwork.
Math makes the call.
As a technician, you don't want an AI hallucinating a diagnosis. Neither do we. Our fault engine is pure thermodynamics — comparing your readings against published PT charts and the standards the trade runs on.
1What AI does
- Reads the dirty data plate via photo OCR
- Finds the exact OEM manual in seconds
- Answers optional follow-up questions about the call — never re-diagnoses
2What deterministic math does
- Calculates superheat & subcooling from your real readings
- Ranks system faults on thermodynamic rules — never a guess
- Cites the industry standard behind every diagnosis
- Explains the "why" behind every call, stage by stage — offline, on every job
Built for the mechanical room.
Not the corner office. We built the tools that actual field technicians need to get the job done right the first time.
Offline first (PWA)
Install directly from your browser — no app store. Works in the deepest basements with zero bars of service. Data syncs when you hit daylight.
9 refrigerant libraries
Full built-in PT charts for R-410A, R-22, R-134a, R-404A, R-407C, R-422B, R-507A, plus the new A2L replacements: R-32 and R-454B.
PM inspections & reports
Guided PM inspections that carry last visit's answers forward, so return visits start half-done. Every job exports a clean, customer-ready service report — the detailed reasoning stays on the tech's screen, where it belongs.
Professional tools.
Simple pricing.
No bloated tiers. No sales calls. Just the math and diagnostic power you need to stop callbacks.
- Full deterministic engine
- Offline PWA access
- AI plate OCR & manuals
- Unlimited reports
Cancel anytime. No hardware required. Bring your own gauges.
Not ready to subscribe? Try the math first.
Free PT chart lookups and superheat/subcooling calculators — the same libraries the engine runs on.