Plumbing · Plumbing Vision Triage Agent · Built & run in production by NexAI
PlumbingUnder-Sink & Water Heater Photo Pre-Diagnosis (Bring the Right Part on Trip 1)
Texts the homeowner a link to snap 2 photos (the leak/fixture and the water heater or disposal label) right after booking so your tech rolls once with the exact replacement part on the truck.
Evidence & Case Study Source: Built on NexAI / moHelp multimodal home-repair photo diagnostic architecture
The business storywho it is for, what was broken, and how it runs
Who this is built for
Service plumbing shops and residential maintenance teams tired of losing 90 billable minutes per job driving to Ferguson or the supply house because the caller didn’t know if their water heater was gas, electric, 40-gallon, or 50-gallon.
What was broken
A homeowner books a call for "water heater not hot" or "garbage disposal humming." The plumber arrives, spends 20 minutes diagnosing, realizes they need a specific thermopile or a tall 50-gallon natural-gas unit, and burns an hour driving to the supply house—costing the shop a full extra service call that afternoon.
How the AI agent workflow operates
Immediately after an appointment is booked, the SMS agent texts the homeowner: "Want to save time on your visit? Snap a quick photo of the problem area and the sticker label on the side of the unit." Vision OCR extracts the manufacturer, model, serial number (decoding manufacture year), fuel type, and visible piping setup, attaching a 1-page tech brief directly to the job ticket.
What changed
Plumbers arrive on the first trip knowing the exact age of the water heater, fuel type, vent style, and shutoff valve condition—turning two-trip jobs into single-visit completions.
Step-by-step architecture4 stages with human approval gates
1 Stage 1Customer / Trigger
Post-Booking MMS Photo Request
As soon as a plumbing call is booked, the customer gets an SMS asking for 1 wide photo of the fixture/pipe and 1 close-up of any manufacturer label.
2 Stage 2AI Agent
Vision OCR & Serial-Age Decoder
Reads brand, model, serial number (calculating tank age), gallon capacity, fuel type, and visible pipe material (PEX, copper, CPVC, galvanized, cast iron).
3 Stage 3System / Tool
Truck-Stock & Repair-vs-Replace Brief
Flags if a tank is 10+ years old (so the tech brings replacement financing options) and lists likely parts needed.
4 Stage 4Human Approval Gate
Dispatcher / Lead Tech Review
Attaches the structured photo brief to the Jobber / Housecall Pro / ServiceTitan work order before the tech dispatches.
Attach a photo of a water heater label, under-sink trap, or toilet tank inside Claude or ChatGPT with this prompt to see the technician brief it generates.
You are a Master Service Plumber & Dispatch Diagnostician.
Analyze the attached homeowner photo(s) and their note to prepare a pre-arrival briefing for our service technician.
Output a clean 4-part Technician Pre-Arrival Brief:
1. EQUIPMENT & DATA PLATE EXTRACTION
- Brand, Model Number, Serial Number, Estimated Manufacture Year (decode from serial format if visible), Fuel/Power Type, Capacity.
2. VISIBLE PIPING & ACCESS CONDITIONS
- Pipe material visible (Copper, PEX, CPVC, PVC, Galvanized, Cast Iron), shutoff valve type (ball valve vs. old multi-turn gate/angle stop), and any tight-access or code issues visible (e.g., missing expansion tank or pan).
3. LIKELY ROOT CAUSE & PARTS TO STOCK ON TRUCK
- Top 2 likely causes and the specific parts/tools the tech should verify are on the truck before rolling.
4. REPAIR VS. REPLACE HEADS-UP
- If the unit appears 10+ years old or shows tank corrosion, flag for the tech to bring Good-Better-Best replacement options.
Two ways to deploy thisDIY recipe pack or done-for-you build
Download the production recipe pack, or have me wire it into your business.
Option 1 · Self-Serve Commercial Recipe Pack
Unlock the Full Production Recipe
$97one-time download · 3 verification test cases included
Everything your developer or technical operator needs to deploy this workflow safely in production without weeks of trial-and-error prompt tuning:
100% Implementation Credit: Credited 100% into a $500 discovery session or a $2,500+ workflow build within 30 days.
Option 2 · Done-For-You by David He
Want me to install, test, and run this for your team?
Skip the API keys, webhook debugging, and carrier registration. I connect this workflow directly to the phone numbers, calendars, and software your business already uses.
Step 1 ($0 · 15 min): 15-minute fit call to inspect your current process and confirm fit.
Step 2 ($500): 60 to 90 minute working session + written implementation plan in 48 hours (credited into the build).
Step 3 (Fixed quote): Voice receptionist setups for 2 to 9 person shops start at $700 to $1,000 setup plus $150 to $375 per month; custom multi-system workflows start from $2,500 setup.
You own everything at handoff: Phone numbers, prompts, transcripts, calendars, and the off switch.
Not sure whether to buy the recipe or book a call?
Start with the free 15-minute fit call. Bring your current phone, dispatch board, or Shopify workflow and I will tell you honestly what I would automate first.