Which St. George plumbers does AI recommend?
We asked an OpenAI model with live web search (through its API) 20 questions that customers ask about plumbers in St. George, 3 times each. Consumer AI apps can answer differently. Of 34 plumbers we found serving St. George, 18 were never named in 60 answers.
The short version
- 18 of 34 plumbers serving St. George were not named in any of the 60 answers.
- 45 of 60 answers named at least one of the same three businesses.
The plumbers AI named most
Counts are how many of the 60 answers named the business, and in how many of the 20 different questions it came up at least once.
| # | Plumber | Answers naming it | Questions it came up in |
|---|---|---|---|
| 1 | Marlin Plumbing Services | 31 of 60 | 16 of 20 |
| 2 | Thompson Plumbing, Heating, Cooling & Electrical | 22 of 60 | 10 of 20 |
| 3 | Red Rock Plumbing and Drain Cleaning | 16 of 60 | 9 of 20 |
| 4 | Element Plumbing, Heating and Air | 15 of 60 | 6 of 20 |
| 5 | Mr. Rooter Plumbing of St. George | 12 of 60 | 7 of 20 |
| 6 | Roto-Rooter Plumbing & Water Cleanup | 12 of 60 | 6 of 20 |
| 7 | Precision Plumbing / Water Heater Pros | 9 of 60 | 5 of 20 |
| 8 | S&S Mechanical - Plumbing Heating Cooling | 9 of 60 | 4 of 20 |
| 9 | Five Star Plumbing | 8 of 60 | 5 of 20 |
| 10 | Iron Mountain Plumbing, Heating & Air | 8 of 60 | 4 of 20 |
We are not publishing the list of the 18 that were never named: a missing result is fixable, and it says nothing about the quality of anyone's work.
What usually decides who gets named
The assistant is not judging who does the best work. It names the businesses it can describe with confidence from what it finds in a live search. For a plumber, that points to three things worth checking:
- Your own site does the most work. Each service you want to be found for deserves its own page that says what it is, who it is for and that you offer it in St. George, in plain text.
- Say where you work in words. A site that names the cities and neighborhoods it serves is easier to match to "near me" and "in St. George" questions.
- Make your listings agree. When your name, address, phone and services match across Google, Yelp, BBB and the directories, the assistant has several sources agreeing about you.
Our guide on why AI recommends your competitor explains these causes in more depth, and the AI visibility checklist turns them into steps.
How we did this
- Questions: 20 questions written the way customers ask an assistant: "best" and "near me", emergencies, price, specific jobs and trust. The full list is below.
- Engine: OpenAI's GPT-5.6 with live web search, set up as a consumer assistant answering a customer in St. George. It was never told which businesses we were looking for.
- Repeats: each question was asked 3 times, because AI answers vary from run to run. A run without a completed live web search is discarded, not counted.
- The list of 34: plumbers serving St. George in October 2026, each confirmed against its own website or a public listing.
- Limits: this is one engine on one day. ChatGPT, Gemini, Claude and Google's AI answers differ from each other and change over time. Treat it as a snapshot, not a ranking.
The 20 questions
- Who's the best plumber in St. George?
- Who are the top-rated plumbers in St. George, Utah?
- I need an emergency plumber in St. George right now, who should I call?
- Who can fix a leaking water heater in St. George?
- Best company for water heater replacement in St. George?
- How much does a plumber cost in St. George, and who's fair on price?
- Who does drain cleaning for a clogged main line in St. George?
- Plumber near me in St. George with good reviews
- Who should I hire to install a tankless water heater in St. George?
- Who can find and fix a slab leak in St. George?
- Best plumber in St. George for repiping an older house?
- Who does sewer line camera inspection and repair in St. George?
- Which St. George plumbers offer upfront pricing and same-day service?
- Who can fix a burst pipe in St. George on a weekend?
- Best plumber in St. George for a bathroom remodel?
- Who installs water softeners in St. George?
- Which plumbing company in St. George is honest and won't upsell?
- Who repairs garbage disposals and kitchen sinks in St. George?
- Is there a family-owned plumbing company in St. George you'd recommend?
- Who should I call for a running toilet or low water pressure in St. George?
Run a St. George plumber business?
The free scan checks one buying question about your business, live, and shows you whether you are named, who is, and why. The $149 report asks 25 questions written around your own services.
Run the free 60-second scan