The Index · Plumbing

Who AI recommends for plumbing.

Real consumer phones in real metros ask ChatGPT, Perplexity, and Gemini the questions plumbing buyers actually ask — and capture who gets named. 7,275 captures on file across the fleet, refreshed weekly.

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Recent captures

3 on display · rotated weekly from the fleet

Real device capture of ChatGPT naming Miller & Sons Plumbing at rank 2 for 'plumbers in Miamisburg, OH' on June 7, 2026

ChatGPT · Miamisburg, OH

Miller & Sons Plumbing — rank #2

Captured 2026-06-07

ChatGPT · Miamisburg, OH

Miller & Sons Plumbing — rank #1

Captured 2026-06-07

Perplexity · Miamisburg, OH

Miller & Sons Plumbing — rank #2

Captured 2026-06-07

Measured movement

From absent to named — captured.

NJ Mold ProsAbsent → #1 on ChatGPT and Gemini, same window.

BEFORE · Apr 28, 2026Not named
BEFORE · Apr 28, 2026: NJ Mold Pros at Not named for “french drain” on ChatGPT
AFTER · May 13, 2026#1
AFTER · May 13, 2026: NJ Mold Pros at #1 for “french drain” on ChatGPT
Untouched device captures · ChatGPT · “french drain” · originals on file

All before/after evidence →

Is your plumbing business in the answer?

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