Which plumber does AI say is the best in Pasadena?
We asked ChatGPT, Claude and Gemini the same question 15 times: “Who is the best plumber in Pasadena?” Here is exactly who they named, and how often.
Who AI names in Pasadena (31 businesses named)
14 of 15 questions got a real answer, so every count below is out of 14. One company came up often enough to call it the clear leader. Below that is everyone else AI named too, because in a market this open, showing up even once is worth knowing.
| # | Company | Standing | Named in |
|---|---|---|---|
| 1 | F & M Plumbing | Leader | 10 of 14 |
| 2 | Merry Plumbing | Also named | 5 of 14 |
| 3 | Moe Plumbing Services | Also named | 5 of 14 |
| 4 | Crown City Plumbing | Also named | 3 of 14 |
| 5 | Free Flo Rooter | Also named | 3 of 14 |
Don’t see your business on the list? You’re not alone — most Pasadena plumbers aren’t. That’s exactly why this market is worth checking.
For the business owner
If you run a plumber business in Pasadena
When a homeowner here asks an AI assistant who to call, they don’t get a page of search results back. They get three or four names, sometimes just one. If your business isn’t one of them, that’s a customer who never saw you and called somebody else.
The market is still open
We found 31 different companies named across just 14 answers, and 14 of those were named only once. Nobody has locked this up.
But the gap compounds
One name already shows up more than any other. The businesses AI already prefers get reinforced every time someone asks again.
Where AI is getting its information
AI doesn’t make these names up. When it recommends a plumber, it’s reading from somewhere else first — a directory, a review site, or the company’s own website. We counted 65 of these source mentions across 18 different websites, and sorted them by what kind of site they are.
- Directories and listing sites
- Company websites
- Forums, video and news
- Review sites
The takeaway: a plumber’s own website is part of what AI reads, and nowhere near all of it. Most of what it repeats about a business here was written somewhere that business does not control.
The sources AI reads here
These are the pages worth being on, in the order AI leaned on them.
- 1expertise.com7 mentions · directory
- 2angi.com6 mentions · directory
- 3fandmplumbing.com5 mentions · company site
- 4moeplumbing.com5 mentions · company site
- 5reddit.com5 mentions · forum
- 6threebestrated.com5 mentions · other
- 7homeadvisor.com4 mentions · directory
- 8merryplumbing.com4 mentions · company site
plus 8 more websites accounting for 16 mentions.