Guided diagnostics, AI nameplate scanner, live Bluetooth instruments, weather-adjusted charge targets, voice co-pilot, and customer-ready reports. Built by techs, for techs.
Watch how Fieldmode guides a tech from symptom to solution in minutes.
Everything a service tech reaches for — unified into an offline-ready workflow where each tool feeds intelligence to the next.
1,500+ field-tested solutions across 18 categories, up to 6 levels deep. Equipment-first branching covers gas furnace, oil burner, heat pump, mini-split, boiler, steam, commercial RTU, water heater, compressor, controls, IAQ, ductwork, electrical, refrigerant, noise, odor, and water leaks. Severity ratings and safety flags on every solution. Real-time weather notes injected per category.
Point at any nameplate — dirty, corroded, or faded. AI extracts manufacturer, model, serial, refrigerant type, tonnage, BTU, voltage, SEER, and age instantly. Model number decoders for 12 brands decode series, specs, and install year from the serial format. Result loads the equipment profile, known issues database, and AI context in one step.
Live GPS + NWS API auto-calculates superheat and subcooling targets for both TXV and fixed-orifice systems based on real outdoor conditions — no manual lookup ever. Seasonal alerts for frozen condensate, spring startup, and peak load events. Targets flow into every diagnostic, calculator, and report automatically.
After scanning a nameplate, Fieldmode cross-references your unit against a curated database of manufacturer-specific problems flagged by model range and year. Known issues surface immediately — before you open a panel. Life status bar shows Young / Mid-life / Aging / End-of-life with percentage. Auto-generates a common parts list based on equipment type, tonnage, and series. Includes manufacturer service portal links and support phone numbers for 19 brands.
Log customer name, equipment details, serial number, tech name, company, and timestamped notes per job. Full history with recall. Session data flows into both report types automatically — no re-entry required. Tech and company name persist across all jobs.
5-year total cost of ownership comparison using unit age, repair cost, replacement cost, refrigerant type, and utility rate. IRA tax credit calculator for qualifying R-454B and heat pump replacements ($2,000). Monthly financing estimates with adjustable rate. Generates a customer-ready slide to close the sale on-site.
Full pressure-temperature chart with industry-standard PSIG values for R-410A, R-22, R-134a, R-32, R-404A, R-407C, and R-454B. Multi-refrigerant overlay view. Color-coded curves. Smooth interpolation for any pressure input. Fully offline — no connection needed ever.
35-node interactive guide covering every A2L refrigerant now going into new equipment. Flammability facts in plain language, tool compatibility by brand, handling rules by job type (attic, closet, commercial rooftop, mini-split), retrofit guidance, EPA 608 and ASHRAE 15 reference, and a customer explainer mode for homeowners who ask about the new refrigerants.
Search replacement parts across Titan, Mars, Packard, and other aftermarket suppliers. Auto-populated from the scanned unit. Vision-identified parts added to the active session. Tap to copy part numbers for ordering. Includes capacitors, contactors, motors, and thermostats with OEM cross-refs.
Pair real gauges via Web Bluetooth and watch readings stream in real time. Suction, discharge, liquid line, ambient — SH, SC, and temp split auto-calculate as you watch. Real-time alerts for floodback, overcharge, and undercharge. Live values auto-populate calculator fields. No manual entry.
Full service worker with intelligent caching. Every feature — diagnostics, calculators, PT chart, parts lookup, job log — works without cell signal. Installs as a PWA directly from the browser on iOS and Android. No app store required. Launches from the home screen like a native app.
Scan a unit once. Every AI mode — chat, voice, and vision — shares that context automatically.
When you scan a nameplate, the AI receives the full equipment profile — decoded specs, known issues, refrigerant type, age, and live outdoor weather. It proactively flags concerns before you ask. Answers are unit-specific, not generic HVAC advice.
Activate hands-free mode and ask questions verbally while working inside the unit. Answers are spoken back via text-to-speech. Same full equipment context as the chat — just no hands required. Perfect for attic installs, crawlspaces, and rooftop units in summer heat.
Take a photo and let AI do the work. Diagnose: photo → fault identification + severity rating. Parts ID: photo → component specs + replacement options. Before/After: document repair quality for customer records and liability. All findings stored in the job session and flow into reports automatically.
Weather-aware where applicable. Bluetooth readings auto-populate fields. Every answer in seconds with no cell signal.
Both reports pull from your entire job session — scanned equipment, weather, diagnostic path, Bluetooth readings, AI vision findings, and parts list. No copy-paste, no re-entry.
Four steps that replace three apps, a binder, and a call back to the office.
Point at any nameplate — dirty or corroded. AI reads manufacturer, model, serial, refrigerant, tonnage, SEER, and age instantly.
~5 secondsFieldmode decodes the model, calculates unit age, surfaces known issues by severity, shows specs, and loads the AI with full context.
InstantWalk guided decision trees, pair Bluetooth probes for live readings, or ask the AI co-pilot with hands-free voice mode.
30–90 secOne tap creates a tech service report or AI-written customer-facing report with repair vs. replace and IRA credit calculations.
1 tapBuilt from scratch for field technicians — not adapted from a general-purpose app.
| Feature | FIELDMODE™ | Bluon | MeasureQuick | HVAC Buddy | Ref Tools |
|---|---|---|---|---|---|
| Guided diagnostic trees | ✓ 1,500+ solutions | ✗ | ✗ | ✗ | ✗ |
| AI nameplate scanner | ✓ Any nameplate | ✗ | ✗ | ✗ | ✗ |
| Known issues database | ✓ 42 issues / 10 brands | ✓ 500k+ units | ✗ | ✗ | ✗ |
| Weather-adjusted SH/SC targets | ✓ Live GPS + NWS | ✗ | ✗ | ~ Manual entry | ~ Manual entry |
| Bluetooth instrument integration | ✓ Chrome/Android | ✗ | ✓ Native iOS+Android | ✗ | ✗ |
| AI conversational assistant | ✓ Voice + text | ✗ | ✗ | ✗ | ✗ |
| AI photo diagnosis + parts ID | ✓ 3 vision modes | ✗ | ✗ | ✗ | ✗ |
| AI-written customer report | ✓ Plain-English PDF | ✗ | ✗ | ✗ | ✗ |
| Tech service report PDF | ✓ Auto-generated | ✗ | ✓ Measurement report | ✗ | ✗ |
| Repair vs. Replace + IRA credits | ✓ Full calculator | ✗ | ✗ | ✗ | ✗ |
| PT chart refrigerant coverage | ✓ 7 refrigerants | ✓ Extensive | ✓ Extensive | ✓ Extensive | ✓ 80+ refrigerants |
| Works fully offline | ✓ Full PWA | ✗ | ✓ | ✓ | ✓ |
| Free tier available | ✓ All diagnostics free | ~ Limited | ~ Limited | ✓ | ✓ |
Scanned a 2015 Trane and it immediately flagged Spine Fin coil corrosion as a known issue. Opened the unit — sure enough, coil was eaten up. Would've taken me 20 minutes to figure that out on my own.
The weather-adjusted superheat targets alone are worth it. I used to pull up three different apps to check conditions, look up the chart, and do the math. Now it's just there when I need it.
My new guy used the diagnostic trees on his second week and caught a cracked heat exchanger I probably would've sent him back for. The guided questions don't let you skip the important checks.
Real feedback from field testing. Named testimonials coming at public launch.
One prevented callback pays for a full year of Pro.
1,500+ field-tested solutions. Bluetooth instruments. AI scanner. Voice co-pilot. Customer reports. Works offline. No signup to start.
1,500+ diagnostics, Bluetooth instruments, AI scanner, and voice co-pilot — coming to the App Store and Google Play. Get notified the day it launches.