Cookies on AIGROW

We use necessary cookies to run the site. With your permission, we also use cookies for analytics, session recordings and marketing attribution.

Cookie Policy

Plumbers in Zurich that AI assistants recommend

H.P. Gasser AG is named most, in 31% of 36 answers.

The ranking

AI Recommendation Rate

Plumbers in Zurich named by AI assistants, November 2026

  1. 1H.P. Gasser AG31%

    95%: 18 to 47%

    ChatGPT
    0%
    Claude
    0%
    Gemini
    92%
    Questions
    4 of 4
    Avg. position
    1

    Named in answers to

    • Who is the best plumber in Zurich?, from Gemini
    • I have a leaking pipe at home in Zurich. Which plumbing company should I call?, from Gemini
    • I need an emergency plumber in Zurich tonight. Who would you recommend?, from Gemini
    • Which plumber in Zurich would you trust to replace a water heater?, from Gemini

    Also written H.P. Gasser AG Sanitär Heizung, H.P. Gasser AG Sanitär & Heizung, H.P. Gasser AG Sanitär-Heizung, H.P. Gasser AG Sanitär-Notfallservice, H.P. Gasser AG Sanitär-Spenglerei

    Is this your business?
  2. 2Sanitas Troesch AG17%

    95%: 8 to 32%

    ChatGPT
    0%
    Claude
    33%
    Gemini
    17%
    Questions
    3 of 4
    Avg. position
    2.5

    Named in answers to

    • Who is the best plumber in Zurich?, from Gemini
    • I have a leaking pipe at home in Zurich. Which plumbing company should I call?, from Claude
    • Which plumber in Zurich would you trust to replace a water heater?, from Claude

    Also written Sanitas Troesch

    Is this your business?
  3. 3Sanitär Notfall Zürich14%

    95%: 6 to 29%

    ChatGPT
    0%
    Claude
    25%
    Gemini
    17%
    Questions
    2 of 4
    Avg. position
    1.6

    Named in answers to

    • I have a leaking pipe at home in Zurich. Which plumbing company should I call?, from Claude
    • I need an emergency plumber in Zurich tonight. Who would you recommend?, from Gemini

    Also written Sanitär-Notfall Zürich

    Is this your business?
  4. 4Wüst14%

    95%: 6 to 29%

    ChatGPT
    0%
    Claude
    0%
    Gemini
    42%
    Questions
    2 of 4
    Avg. position
    2.2

    Named in answers to

    • I have a leaking pipe at home in Zurich. Which plumbing company should I call?, from Gemini
    • Which plumber in Zurich would you trust to replace a water heater?, from Gemini

    Also written Wüst Sanitär AG, Wüst Haustechnik AG

    Is this your business?
  5. 5Hälg & Co. AG11%

    95%: 4 to 25%

    ChatGPT
    33%
    Claude
    0%
    Gemini
    0%
    Questions
    3 of 4
    Avg. position
    2

    Named in answers to

    • Who is the best plumber in Zurich?, from ChatGPT
    • I have a leaking pipe at home in Zurich. Which plumbing company should I call?, from ChatGPT
    • Which plumber in Zurich would you trust to replace a water heater?, from ChatGPT

    Also written Hälg & Co. AG Zürich, Hälg & Co. AG, Zürich

    Is this your business?
  6. 6Koster AG11%

    95%: 4 to 25%

    ChatGPT
    33%
    Claude
    0%
    Gemini
    0%
    Questions
    3 of 4
    Avg. position
    2.3

    Named in answers to

    • Who is the best plumber in Zurich?, from ChatGPT
    • I have a leaking pipe at home in Zurich. Which plumbing company should I call?, from ChatGPT
    • Which plumber in Zurich would you trust to replace a water heater?, from ChatGPT

    Also written Koster AG Gebäudetechnik, Koster AG Haustechnik, Koster AG, Zürich

    Is this your business?
  7. 7Roto-Rooter AG11%

    95%: 4 to 25%

    ChatGPT
    17%
    Claude
    17%
    Gemini
    0%
    Questions
    2 of 4
    Avg. position
    2.5

    Named in answers to

    • I have a leaking pipe at home in Zurich. Which plumbing company should I call?, from Claude
    • I need an emergency plumber in Zurich tonight. Who would you recommend?, from ChatGPT and Claude

    Also written Roto-Rooter Sanitär Notdienst Zürich, Roto-Rooter Sanitär Zürich

    Is this your business?
  8. 8Rohrmax AG8%

    95%: 3 to 22%

    ChatGPT
    17%
    Claude
    8%
    Gemini
    0%
    Questions
    2 of 4
    Avg. position
    2

    Named in answers to

    • I have a leaking pipe at home in Zurich. Which plumbing company should I call?, from Claude
    • I need an emergency plumber in Zurich tonight. Who would you recommend?, from ChatGPT

    Also written Rohrmax, RohrMax AG

    Is this your business?
  9. 9Neukom AG8%

    95%: 3 to 22%

    ChatGPT
    25%
    Claude
    0%
    Gemini
    0%
    Questions
    1 of 4
    Avg. position
    2.3

    Named in answers to

    • Who is the best plumber in Zurich?, from ChatGPT

    Also written Neukom Installationen AG

    Is this your business?
  10. 10Meier Tobler AG8%

    95%: 3 to 22%

    ChatGPT
    17%
    Claude
    0%
    Gemini
    8%
    Questions
    3 of 4
    Avg. position
    2.7

    Named in answers to

    • Who is the best plumber in Zurich?, from Gemini
    • I have a leaking pipe at home in Zurich. Which plumbing company should I call?, from ChatGPT
    • Which plumber in Zurich would you trust to replace a water heater?, from ChatGPT

    Also written Meier Tobler AG Zürich

    Is this your business?
  11. 11Käppeli Sanitär AG8%

    95%: 3 to 22%

    ChatGPT
    0%
    Claude
    0%
    Gemini
    25%
    Questions
    3 of 4
    Avg. position
    3

    Named in answers to

    • Who is the best plumber in Zurich?, from Gemini
    • I need an emergency plumber in Zurich tonight. Who would you recommend?, from Gemini
    • Which plumber in Zurich would you trust to replace a water heater?, from Gemini
    Is this your business?
  12. 12Hans Leutenegger AG6%

    95%: 2 to 18%

    ChatGPT
    17%
    Claude
    0%
    Gemini
    0%
    Questions
    2 of 4
    Avg. position
    1.5

    Named in answers to

    • I have a leaking pipe at home in Zurich. Which plumbing company should I call?, from ChatGPT
    • I need an emergency plumber in Zurich tonight. Who would you recommend?, from ChatGPT

    Also written Hans Leutenegger AG – Zürich

    Is this your business?
  13. 13Ruckstuhl AG6%

    95%: 2 to 18%

    ChatGPT
    17%
    Claude
    0%
    Gemini
    0%
    Questions
    2 of 4
    Avg. position
    1.5

    Named in answers to

    • Who is the best plumber in Zurich?, from ChatGPT
    • I need an emergency plumber in Zurich tonight. Who would you recommend?, from ChatGPT

    Also written Ruckstuhl Gebäudetechnik AG

    Is this your business?
  14. 14Sanitär Notdienst Zürich6%

    95%: 2 to 18%

    ChatGPT
    0%
    Claude
    0%
    Gemini
    17%
    Questions
    1 of 4
    Avg. position
    1.5

    Named in answers to

    • I need an emergency plumber in Zurich tonight. Who would you recommend?, from Gemini
    Is this your business?
  15. 15PB Sanitär AG6%

    95%: 2 to 18%

    ChatGPT
    0%
    Claude
    17%
    Gemini
    0%
    Questions
    1 of 4
    Avg. position
    2

    Named in answers to

    • I have a leaking pipe at home in Zurich. Which plumbing company should I call?, from Claude
    Is this your business?
  16. 16Sanitär Müller AG6%

    95%: 2 to 18%

    ChatGPT
    0%
    Claude
    0%
    Gemini
    17%
    Questions
    2 of 4
    Avg. position
    2.5

    Named in answers to

    • Who is the best plumber in Zurich?, from Gemini
    • I have a leaking pipe at home in Zurich. Which plumbing company should I call?, from Gemini
    Is this your business?
  17. 17Baur & Co. AG6%

    95%: 2 to 18%

    ChatGPT
    17%
    Claude
    0%
    Gemini
    0%
    Questions
    1 of 4
    Avg. position
    3

    Named in answers to

    • I need an emergency plumber in Zurich tonight. Who would you recommend?, from ChatGPT
    Is this your business?
  18. 18Bieri6%

    95%: 2 to 18%

    ChatGPT
    0%
    Claude
    17%
    Gemini
    0%
    Questions
    2 of 4
    Avg. position
    3

    Named in answers to

    • I have a leaking pipe at home in Zurich. Which plumbing company should I call?, from Claude
    • Which plumber in Zurich would you trust to replace a water heater?, from Claude

    Also written Bieri Haustechnik AG, Bieri Sanitär AG

    Is this your business?
  19. 19Hauser Haustechnik AG6%

    95%: 2 to 18%

    ChatGPT
    0%
    Claude
    17%
    Gemini
    0%
    Questions
    2 of 4
    Avg. position
    3

    Named in answers to

    • Who is the best plumber in Zurich?, from Claude
    • Which plumber in Zurich would you trust to replace a water heater?, from Claude
    Is this your business?
  20. 20Notfall24 Sanitär Zürich6%

    95%: 2 to 18%

    ChatGPT
    0%
    Claude
    17%
    Gemini
    0%
    Questions
    1 of 4
    Avg. position
    3

    Named in answers to

    • I need an emergency plumber in Zurich tonight. Who would you recommend?, from Claude
    Is this your business?

Open a row to see each assistant's share of its 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. 53 more names came up in a single answer and are counted above but not listed.

Plumbers in Zurich: is this your field?

73different names in 36 answers, 53 of them only once. The assistants change their minds from one answer to the next.

Check whether AI names you
Is this your business?

Named on this list? Get the badge for your website and a free scan of who AI assistants recommend to your customers. Use the badge only for a business named here. It records this edition, without verifying ownership or promising future mentions.

See the badge codeSee the AI Local Fix for $190Read the trade pageAll done-for-you services
How the AIGROW Score is measured

No business can pay to appear in the Index, rise in it or be removed from it. How the Index stays neutral

AI Visibility Index · November 2026

Asked about plumbers in Zurich, ChatGPT, Claude and Gemini named H.P. Gasser AG most often, in 31% of answers (its AI Recommendation Rate), then Sanitas Troesch AG (17%) and Sanitär Notfall Zürich (14%). Across 36 answers they named 73 different businesses, 53 of them only once. Each of four buyer questions was asked three times, in German, in November 2026.

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.

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

Plumbers · Zurich

31% of answers named H.P. Gasser AG

Answers
36
Businesses named
73
Named only once
53
Named by 2+ assistants
5 of 20
Named again on a rerun
24%

Edition November 2026. Download the data

Share this rankingLinkedInX

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
1Hälg & Co. AG33%Sanitas Troesch AG33%H.P. Gasser AG92%
2Koster AG33%Sanitär Notfall Zürich25%Wüst42%
3Neukom AG25%Roto-Rooter AG17%Käppeli Sanitär AG25%
4Roto-Rooter AG17%PB Sanitär AG17%Sanitas Troesch AG17%
5Rohrmax AG17%Bieri17%Sanitär Notfall Zürich17%

Claude named no business in 1 of its 12 answers.

Questions about plumbers in Zurich

How AI assistants recommend plumbers

ChatGPT, Claude and Gemini named H.P. Gasser AG most often, in 31% of 36 answers, then Sanitas Troesch AG (17%) and Sanitär Notfall Zürich (14%). The names come from what the assistants answered to four buyer questions in November 2026; we have not checked that any of them is good, open or real.

Not always. ChatGPT named Hälg & Co. AG most often (33% of its answers), Claude Sanitas Troesch AG (33%) and Gemini H.P. Gasser AG (92%). 5 of the 20 listed businesses were named by two or more of them.

Each question was asked three times. Of the names an assistant gave for a question, 24% came back in two or more of those runs; the rest came up once. The 95% range beside each rate in the ranking shows how far it could move by chance.

Run the free checker: it asks ChatGPT, Claude, Gemini and Grok two of the Index questions for plumbers, with the category and the place already filled in, and shows every answer word for word. About 30 seconds, no sign-up. The page on how AI assistants recommend plumbers shows what an owner can work on. Nothing can guarantee that an assistant names you.

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 Zurich, AIGROW AI Visibility Index, November 2026
<a href="https://aigrow.gg/index/plumbers/zurich"><img src="https://aigrow.gg/badges/index/2026-11/plumbers/zurich.svg" width="312" height="100" alt="Named by AI assistants: Plumbers in Zurich, AIGROW AI Visibility Index, November 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 Zürich?Who is the best plumber in Zurich?
  2. 2Bei mir zu Hause in Zürich leckt ein Rohr. Welchen Sanitärbetrieb soll ich anrufen?I have a leaking pipe at home in Zurich. Which plumbing company should I call?
  3. 3Ich brauche heute Abend einen Sanitär-Notdienst in Zürich. Wen empfiehlst du?I need an emergency plumber in Zurich tonight. Who would you recommend?
  4. 4Welchem Sanitärinstallateur in Zürich würdest du den Austausch eines Boilers anvertrauen?Which plumber in Zurich 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

AI Visibility Index

Elsewhere in the Index

Plumbers elsewhere
BaselBernGenevaLausanneLuganoBerlin
Also in Zurich
DentistsLawyersAccountantsGymsReal estate agenciesRestaurants

Not on this list? See what ChatGPT says about your business

Plumbers, Zurich: see whether the assistants name you, or someone else.

Free, no account, no card. About a minute.

Read the method

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