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Practical LLM: Plumber Diagnose & Quote

Turn a messy customer description into probable causes, a parts list, and a tiered quote.

Published January 8, 2026

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Practical LLM: Electrician Safety-First Checklist

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Practical LLM: HVAC Tune & Triage

What you are practicing

Structure fuzzy complaints into a clear diagnosis workflow and price options.

Can You Guess?

Customer says: 'Basement drain backs up after laundry. Smells bad.' What should you ask the model to produce first?

Quote prompt pattern

Follow the steps and watch each checkpoint light up as you progress.

1

Step 1: Copy the complaint

Include location, symptoms, timing, odors, and fixtures affected.

2

Step 2: Request likely causes

Ask for 2–3 hypotheses ranked by likelihood.

3

Step 3: Ask for parts and labor

For each hypothesis, list parts, labor steps, and estimated time.

4

Step 4: Build tiered quotes

Provide standard vs urgent pricing with a short client explanation.

Create a draft quote

  • Paste a real customer message.
  • Prompt: “You are a licensed plumber. Based on this complaint, give top 3 likely causes with confidence, parts and labor per cause, and a standard vs urgent quote. Keep it under 200 words.”
  • Review and adjust rates, then regenerate.

    • Key Takeaways

    • ✓ Rank causes first; price against them.
    • ✓ List parts and labor so you can sanity-check costs.
    • ✓ Offer tiered pricing with a simple client explanation.

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    Lesson: Practical LLM: Plumber Diagnose & Quote

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