Plumbers in Utrecht that AI assistants recommend
We asked ChatGPT, Claude and Gemini the four questions a buyer asks when looking for plumbers in Utrecht, three times each, in Dutch, and counted who they named. These are the businesses named in two or more of the 36 answers.
Names are printed as the assistants wrote them. We have not checked that any of them is good, open, or real.
- Answers
- 36
- Businesses named
- 35
- Named only once
- 16
- Named by 2+ assistants
- 12 of 19
- Named again on a rerun
- 39%
Edition September 2026. Download the data
Asked for plumbers in Utrecht, ChatGPT, Claude and Gemini most often named Loodgietersbedrijf Utrecht (39% of answers), Loodgieter Utrecht (36%) and RRS (Riool Reinigings Service) (28%). Across 36 answers they named 35 different businesses, 16 of them only once. Each of four buyer questions was asked three times, in Dutch, in September 2026.
The ranking
The AI Recommendation Rate is the fraction of the 36 answers that named a business. The range under it is a 95% confidence interval: where two ranges overlap, the gap between those businesses could be chance.
| # | Business | AI Recommendation Rate | ChatGPT | Claude | Gemini | Questions | Avg. position |
|---|---|---|---|---|---|---|---|
| 1 | Loodgietersbedrijf UtrechtIs this your business? | 95%: 25 to 55% | 0% | 17% | 100% | 4 of 4 | 1.2 |
| 2 | Loodgieter UtrechtIs this your business? | 95%: 23 to 52% | 58% | 50% | 0% | 4 of 4 | 1 |
| 3 | RRS (Riool Reinigings Service)Also written RRS Riool Reinigings Service, RRS Utrecht, RRS, RRS – Riool Reinigings ServiceIs this your business? | 95%: 16 to 44% | 42% | 42% | 0% | 3 of 4 | 2.2 |
| 4 | FeenstraAlso written Feenstra UtrechtIs this your business? | 95%: 16 to 44% | 50% | 33% | 0% | 3 of 4 | 2.4 |
| 5 | Van der Heijden InstallatietechniekAlso written Installatiebedrijf Van der Heijden, Van der Heijden LoodgietersbedrijfIs this your business? | 95%: 12 to 38% | 0% | 0% | 67% | 3 of 4 | 1.8 |
| 6 | Loodgieter Utrecht 24/7Is this your business? | 95%: 10 to 35% | 25% | 25% | 8% | 2 of 4 | 1.3 |
| 7 | Van der Velde InstallatieAlso written Loodgietersbedrijf Van der Velde, Van der Velde Installatiebedrijf Utrecht, Van der Velde Installatietechniek, Van der Velde LoodgietersIs this your business? | 95%: 8 to 32% | 33% | 17% | 0% | 3 of 4 | 2.3 |
| 8 | De Jong InstallatietechniekAlso written Installatiebedrijf De Jong UtrechtIs this your business? | 95%: 8 to 32% | 0% | 8% | 42% | 2 of 4 | 3 |
| 9 | Rioolservice UtrechtIs this your business? | 95%: 4 to 25% | 0% | 0% | 33% | 2 of 4 | 2 |
| 10 | Van der Velden RioleringsbeheerAlso written Van der Velden Rioleringsbeheer Utrecht, Van der Velden Rioleringsbeheer & InstallatietechniekIs this your business? | 95%: 4 to 25% | 8% | 17% | 8% | 3 of 4 | 2.8 |
| 11 | Van der Vlist InstallatiesAlso written Installatiebedrijf Van der Vlist, Van der Vlist LoodgietersIs this your business? | 95%: 3 to 22% | 17% | 8% | 0% | 2 of 4 | 2.3 |
| 12 | De Loodgieter UtrechtAlso written De loodgieter UtrechtIs this your business? | 95%: 3 to 22% | 0% | 8% | 17% | 2 of 4 | 2.7 |
| 13 | De Utrechtse LoodgieterAlso written Utrechtse LoodgieterIs this your business? | 95%: 3 to 22% | 8% | 0% | 17% | 1 of 4 | 2.7 |
| 14 | Loodgietersbedrijf De KoningIs this your business? | 95%: 3 to 22% | 0% | 0% | 25% | 1 of 4 | 3.3 |
| 15 | Spoed Loodgieter UtrechtIs this your business? | 95%: 3 to 22% | 0% | 0% | 25% | 1 of 4 | 4 |
| 16 | Eneco InstallatiebedrijvenIs this your business? | 95%: 2 to 18% | 17% | 0% | 0% | 1 of 4 | 2.5 |
| 17 | Van den Berg LoodgietersAlso written Installatiebedrijf Van den Berg UtrechtIs this your business? | 95%: 2 to 18% | 0% | 17% | 0% | 2 of 4 | 2.5 |
| 18 | Utrechtse Loodgieters CentraleIs this your business? | 95%: 2 to 18% | 0% | 0% | 17% | 1 of 4 | 4 |
| 19 | Van der Veen LoodgietersbedrijfAlso written Installatiebedrijf Van der VeenIs this your business? | 95%: 2 to 18% | 8% | 0% | 8% | 1 of 4 | 4 |
Each assistant column is the share of that assistant's own answers. Questions counts how many of the four produced the name at least once; position is where it came in the answer's list, 1 being first. 16 more names came up in a single answer and are counted above but not listed.
Is this your business?
See what the assistants say about your business today. The free checker asks ChatGPT, Claude, Gemini and Grok two of the Index questions for this category, with the category and the place already filled in, and shows every answer word for word. About 30 seconds, no sign-up.
What each assistant said
The same questions, the same number of times, and often different names. Each column is one assistant's top five from the ranking above, with the share of its own answers that named them.
| # | ChatGPT | Claude | Gemini |
|---|---|---|---|
| 1 | Loodgieter Utrecht58% | Loodgieter Utrecht50% | Loodgietersbedrijf Utrecht100% |
| 2 | Feenstra50% | RRS (Riool Reinigings Service)42% | Van der Heijden Installatietechniek67% |
| 3 | RRS (Riool Reinigings Service)42% | Feenstra33% | De Jong Installatietechniek42% |
| 4 | Van der Velde Installatie33% | Loodgieter Utrecht 24/725% | Rioolservice Utrecht33% |
| 5 | Loodgieter Utrecht 24/725% | Loodgietersbedrijf Utrecht17% | Loodgietersbedrijf De Koning25% |
Named here? Put it on your site
Every business in the ranking was named in two or more answers. The badge says that and nothing more: no position, because the ranges above do not support one. It links back to this page, so anyone can check.
<a href="https://aigrow.gg/index/plumbers/utrecht"><img src="https://aigrow.gg/badges/index/2026-09/plumbers/utrecht.svg" width="312" height="100" alt="Named by AI assistants: Plumbers in Utrecht, AIGROW AI Visibility Index, September 2026"></a>The questions
Asked word for word, three times each, to every assistant, in Dutch. The English under each is our translation. The prompt is the one the free scan uses. No web search, no location and no chat history, so every answer starts from the same place.
- 1Wie is de beste loodgieter in Utrecht?Who is the best plumber in Utrecht?
- 2Ik heb thuis in Utrecht een lekkende leiding. Welk loodgietersbedrijf kan ik het beste bellen?I have a leaking pipe at home in Utrecht. Which plumbing company should I call?
- 3Ik heb vanavond in Utrecht een loodgieter nodig voor een noodgeval. Wie raad je aan?I need an emergency plumber in Utrecht tonight. Who would you recommend?
- 4Welke loodgieter in Utrecht zou jij vertrouwen om mijn boiler te vervangen?Which plumber in Utrecht would you trust to replace a water heater?
How to read this page
- What it measures
- Which names these models produce when asked cold, from what they learned in training. It is not a review, a rating or our recommendation, and a business missing here may simply be one the models were never shown.
- Why the ranges matter
- 36 answers is a sample. Asked again next month, most shares will move by a few points; the ranges say how far they could move by chance alone.
- One business, several spellings
- Branches, legal suffixes and spellings of one business are merged, and the other spellings are printed under its name. Names that might be two businesses are kept apart.
- A name is wrong
- If a business here is closed, misnamed or yours and you want it removed, tell us. We correct or remove it when the page is next published.
Where the assistants look
The sites read most often, with web search on, before the assistants answer about this category in the Netherlands. From the AI Source Map: 5 answers.
- trustoo.nl
- Read in 100% of the answers
- werkspot.nl
- Read in 80% of the answers
- lecoskeuze.nl
- Read in 80% of the answers
Elsewhere in the Index
Is your business on this list?
The free scan asks the same assistants the questions your customers ask, scores whether they name you, and lists who they name instead.
Edition September 2026 · published by Guglielmo Paesano, founder of AIGROW · data under CC BY 4.0