Which plumbers do AI assistants recommend in Philadelphia, PA?
We ask Google Gemini (with Google Search) the questions people really type, such as “Who is the best plumber in Philadelphia, PA?”, every week, sampling each question several times, and count which businesses they name. Period: 2026-W43. Updated 2026-10-20.
Businesses named by AI assistants
| # | Business | Mention rate | 95% confidence interval | Named first |
|---|---|---|---|---|
| 1 | Plumbing Pals Google Gemini 6/6 | 100% 6 of 6 answers | 61% to 100% | 1 |
| 2 | VinKo Plumbing Google Gemini 6/6 | 100% 6 of 6 answers | 61% to 100% | 0 |
| 3 | Goodman Plumbing Google Gemini 6/6 | 100% 6 of 6 answers | 61% to 100% | 4 |
| 4 | Gorilla Inc. Google Gemini 4/6 | 67% 4 of 6 answers | 30% to 90% | 0 |
| 5 | Mr. Tubs Plumbing & Heating Google Gemini 3/6 | 50% 3 of 6 answers | 19% to 81% | 1 |
| 6 | Roger Ross Plumbing & Heating Google Gemini 2/6 | 33% 2 of 6 answers | 10% to 70% | 0 |
| 7 | Joseph’s Affordable Plumbing & Heating Google Gemini 1/6 | 17% 1 of 6 answers | 3% to 56% | 0 |
| 8 | IFIXDIT, LLC Google Gemini 1/6 | 17% 1 of 6 answers | 3% to 56% | 0 |
| 9 | Bill Frusco Plumbing, Heating & Air Conditioning Google Gemini 1/6 | 17% 1 of 6 answers | 3% to 56% | 0 |
| 10 | Joseph Giannone Plumbing, Heating & Air Conditioning Google Gemini 1/6 | 17% 1 of 6 answers | 3% to 56% | 0 |
| 11 | East Philly Plumbing and Heating Google Gemini 1/6 | 17% 1 of 6 answers | 3% to 56% | 0 |
| 12 | Philly Plumbing Pros Google Gemini 1/6 | 17% 1 of 6 answers | 3% to 56% | 0 |
| 13 | Bill Frusco Plumbing, Heating & Cooling Google Gemini 1/6 | 17% 1 of 6 answers | 3% to 56% | 0 |
| 14 | Pressman Home Services Google Gemini 1/6 | 17% 1 of 6 answers | 3% to 56% | 0 |
Mention rate = share of answers that name the business. The interval shows the range compatible with the sample: when two intervals overlap, the difference may be noise.
Where the AI assistants look
| Source cited | Share of answers |
|---|---|
| reddit.com | 100% |
| phillymag.com | 100% |
| consumeraffairs.com | 67% |
| checkbook.org | 50% |
| angi.com | 50% |
| phillyplumbingpros.com | 33% |
| goodmanplumbers.com | 33% |
| josephsaffordable.com | 17% |
| thumbtack.com | 17% |
| jgiannoneplumbingheating.com | 17% |
We can run the same measurement for your business, your competitors and your own questions, across more AI assistants. Write to jovianlabsstudio@gmail.com.
Questions
Does this mean these plumbers are the best?
No. It measures what AI assistants say, not service quality. AI answers can be incomplete or outdated.
Why do the results change from one answer to the next?
AI assistants do not give the same answer every time. That is why we sample each question several times and report confidence intervals.
How can a business appear more often?
The answers rely on the sources listed above: being present and well reviewed there is a good start. See the methodology.