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AI Visibility Index · September 2026

Plumbers in Bern that AI assistants recommend

We asked ChatGPT, Claude and Gemini the four questions a buyer asks when looking for plumbers in Bern, three times each, in German, and counted who they named. These are the businesses named in two or more of the 36 answers.

Check whether AI names youSee the ranking

Names are printed as the assistants wrote them. We have not checked that any of them is good, open, or real.

Plumbers · Bern
25%of answers named Brunner Sanitär AG
Answers
36
Businesses named
66
Named only once
44
Named by 2+ assistants
10 of 22
Named again on a rerun
22%

Edition September 2026. Download the data

Asked for plumbers in Bern, ChatGPT, Claude and Gemini most often named Brunner Sanitär AG (25% of answers), Schmid Sanitär AG (22%) and Hälg & Co. AG (19%). Across 36 answers they named 66 different businesses, 44 of them only once. Each of four buyer questions was asked three times, in German, 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.

Plumbers in Bern named by AI assistants, September 2026
#BusinessAI Recommendation RateChatGPTClaudeGeminiQuestionsAvg. position
1Brunner Sanitär AGAlso written Brunner Sanitär & Heizung AGIs this your business?25%95%: 14 to 41%0%0%75%4 of 43.9
2Schmid Sanitär AGAlso written Schmid Sanitär AG Bern, Schmid Sanitär Heizung AGIs this your business?22%95%: 12 to 38%17%0%50%3 of 42.1
3Hälg & Co. AGAlso written Hälg & Co. AG Bern, Hälg & Co. AG, BernIs this your business?19%95%: 10 to 35%8%8%42%3 of 41.6
4Wälchli Sanitär AGIs this your business?19%95%: 10 to 35%0%0%58%3 of 43.3
5Guggisberg Dachtechnik AGAlso written Guggisberg Dachtechnik AG, BernIs this your business?17%95%: 8 to 32%17%33%0%3 of 42.3
6Hans Leutenegger AG BernAlso written Hans Leutenegger AG, BernIs this your business?14%95%: 6 to 29%17%25%0%3 of 42.6
7Häfliger AGAlso written Häfliger Sanitär AGIs this your business?11%95%: 4 to 25%0%0%33%3 of 42
8H. R. Müller AGIs this your business?11%95%: 4 to 25%0%33%0%2 of 42.3
9Riedo Clima AGAlso written Riedo Clima AG BernIs this your business?11%95%: 4 to 25%25%8%0%3 of 42.5
10Krebs AGAlso written Krebs AG Bern, Krebs AG, BernIs this your business?8%95%: 3 to 22%25%0%0%3 of 42
11Bärtschi Sanitär AGAlso written A. Bärtschi Sanitär AGIs this your business?8%95%: 3 to 22%8%17%0%2 of 42.3
12Kull Sanitär AGIs this your business?8%95%: 3 to 22%0%0%25%2 of 42.7
13Wyss Sanitär AGIs this your business?8%95%: 3 to 22%0%0%25%2 of 43.7
14K. Schweizer AGAlso written K. Schweizer AG, BernIs this your business?6%95%: 2 to 18%8%8%0%2 of 41
15A. Lanz AGAlso written A. Lanz AG Sanitär Heizung Lüftung BernIs this your business?6%95%: 2 to 18%0%17%0%2 of 41.5
16Burkhalter Technics AGIs this your business?6%95%: 2 to 18%8%0%8%2 of 41.5
17RohrMax AGAlso written RohrMax AG BernIs this your business?6%95%: 2 to 18%0%17%0%1 of 42
18Sanitär Bern AGIs this your business?6%95%: 2 to 18%8%0%8%1 of 42.5
19Sanitär-Team BernAlso written Sanitär-Team Bern AG, Sanitär-Team Bern GmbHIs this your business?6%95%: 2 to 18%0%0%17%1 of 42.5
20Sanitas TroeschAlso written Sanitas Troesch AGIs this your business?6%95%: 2 to 18%0%0%17%2 of 43
21Bolliger Sanitär AGIs this your business?6%95%: 2 to 18%0%0%17%2 of 43.5
22Kunz AGAlso written Kunz AG Bern, Kunz Sanitär AGIs this your business?6%95%: 2 to 18%8%0%8%1 of 43.5

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. 44 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.

Check your businessNamed above? Add the badgeWhat the audit does

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.

#ChatGPTClaudeGemini
1Riedo Clima AG25%Guggisberg Dachtechnik AG33%Brunner Sanitär AG75%
2Krebs AG25%H. R. Müller AG33%Wälchli Sanitär AG58%
3Schmid Sanitär AG17%Hans Leutenegger AG Bern25%Schmid Sanitär AG50%
4Guggisberg Dachtechnik AG17%Bärtschi Sanitär AG17%Hälg & Co. AG42%
5Hans Leutenegger AG Bern17%A. Lanz AG17%Häfliger AG33%

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.

Correct or remove a listing
Named by AI assistants: Plumbers in Bern, AIGROW AI Visibility Index, September 2026
<a href="https://aigrow.gg/index/plumbers/bern"><img src="https://aigrow.gg/badges/index/2026-09/plumbers/bern.svg" width="312" height="100" alt="Named by AI assistants: Plumbers in Bern, AIGROW AI Visibility Index, September 2026"></a>

The questions

Asked word for word, three times each, to every assistant, in German. 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.

  1. 1Wer ist der beste Sanitärinstallateur in Bern?Who is the best plumber in Bern?
  2. 2Bei mir zu Hause in Bern leckt ein Rohr. Welchen Sanitärbetrieb soll ich anrufen?I have a leaking pipe at home in Bern. Which plumbing company should I call?
  3. 3Ich brauche heute Abend einen Sanitär-Notdienst in Bern. Wen empfiehlst du?I need an emergency plumber in Bern tonight. Who would you recommend?
  4. 4Welchem Sanitärinstallateur in Bern würdest du den Austausch eines Boilers anvertrauen?Which plumber in Bern would you trust to replace a water heater?

How to read this page

The full method
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 Switzerland. From the AI Source Map: 7 answers.

See every site for this category
local.ch
Read in 100% of the answers
reddit.com
Read in 86% of the answers
search.ch
Read in 71% of the answers

Elsewhere in the Index

Plumbers elsewhere
BaselGenevaLausanneLuganoZurichBerlin
Also in Bern
DentistsLawyersAccountantsGymsReal estate agenciesRestaurants

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.

Run the free AI scanRead the method

Edition September 2026 · published by Guglielmo Paesano, founder of AIGROW · data under CC BY 4.0