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Plumbers in Berlin that AI assistants recommend

Thermondo is named most, in 22% of 36 answers.

The ranking

AI Recommendation Rate

Plumbers in Berlin named by AI assistants, November 2026

  1. 1Thermondo22%

    95%: 12 to 38%

    ChatGPT
    17%
    Claude
    42%
    Gemini
    8%
    Questions
    3 of 4
    Avg. position
    3.1

    Named in answers to

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

    Also written Thermondo GmbH, Thermondo Notdienst

    Is this your business?
  2. 2Rohrreinigung Berlin 24h14%

    95%: 6 to 29%

    ChatGPT
    0%
    Claude
    42%
    Gemini
    0%
    Questions
    3 of 4
    Avg. position
    1

    Named in answers to

    • I have a leaking pipe at home in Berlin. Which plumbing company should I call?, from Claude
    • I need an emergency plumber in Berlin tonight. Who would you recommend?, from Claude
    • Which plumber in Berlin would you trust to replace a water heater?, from Claude
    Is this your business?
  3. 3B&O14%

    95%: 6 to 29%

    ChatGPT
    33%
    Claude
    0%
    Gemini
    8%
    Questions
    3 of 4
    Avg. position
    1.6

    Named in answers to

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

    Also written B&O Service Berlin GmbH, B&O Gebäudetechnik GmbH, Sanitär Notdienst Berlin 24

    Is this your business?
  4. 4Sanitär-Notdienst Berlin14%

    95%: 6 to 29%

    ChatGPT
    0%
    Claude
    8%
    Gemini
    33%
    Questions
    3 of 4
    Avg. position
    2.4

    Named in answers to

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

    Also written Sanitär Notdienst Berlin, Sanitär Notdienst Berlin GmbH

    Is this your business?
  5. 5K&S Sanitärtechnik11%

    95%: 4 to 25%

    ChatGPT
    0%
    Claude
    8%
    Gemini
    25%
    Questions
    2 of 4
    Avg. position
    1.8

    Named in answers to

    • Who is the best plumber in Berlin?, from Gemini
    • I need an emergency plumber in Berlin tonight. Who would you recommend?, from Claude and Gemini

    Also written Installateur Notdienst Berlin, Installateur Notdienst Berlin GmbH, Klempner Berlin Notdienst

    Is this your business?
  6. 6AIRA8%

    95%: 3 to 22%

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

    Named in answers to

    • I need an emergency plumber in Berlin tonight. Who would you recommend?, from ChatGPT

    Also written Aira Berlin, AIRA Notdienst Berlin

    Is this your business?
  7. 7Böhm & Sohn8%

    95%: 3 to 22%

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

    Named in answers to

    • Who is the best plumber in Berlin?, from Gemini
    • I need an emergency plumber in Berlin tonight. Who would you recommend?, from Gemini
    • Which plumber in Berlin would you trust to replace a water heater?, from Gemini

    Also written Böhm & Sohn GmbH, Böhm & Sohn Sanitär- und Heizungstechnik

    Is this your business?
  8. 8Bäder & Heizung Berlin GmbH8%

    95%: 3 to 22%

    ChatGPT
    0%
    Claude
    0%
    Gemini
    25%
    Questions
    2 of 4
    Avg. position
    1.3

    Named in answers to

    • Who is the best plumber in Berlin?, from Gemini
    • I have a leaking pipe at home in Berlin. Which plumbing company should I call?, from Gemini
    Is this your business?
  9. 9Bär & Ollenroth KG8%

    95%: 3 to 22%

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

    Named in answers to

    • Who is the best plumber in Berlin?, from ChatGPT
    Is this your business?
  10. 10Heizung Sanitär Berlin8%

    95%: 3 to 22%

    ChatGPT
    0%
    Claude
    17%
    Gemini
    8%
    Questions
    3 of 4
    Avg. position
    2.3

    Named in answers to

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

    Also written Heizung Sanitär Berlin GmbH, Klempner Berlin, Sanitär Heizung Berlin GmbH

    Is this your business?
  11. 11Berliner Wasserbetriebe Notdienst8%

    95%: 3 to 22%

    ChatGPT
    0%
    Claude
    25%
    Gemini
    0%
    Questions
    2 of 4
    Avg. position
    2.7

    Named in answers to

    • I have a leaking pipe at home in Berlin. Which plumbing company should I call?, from Claude
    • I need an emergency plumber in Berlin tonight. Who would you recommend?, from Claude
    Is this your business?
  12. 12Klempner Berlin 24h Notdienst6%

    95%: 2 to 18%

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

    Named in answers to

    • Who is the best plumber in Berlin?, from Gemini
    Is this your business?
  13. 13Haustechnik Berlin GmbH6%

    95%: 2 to 18%

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

    Named in answers to

    • Which plumber in Berlin would you trust to replace a water heater?, from Claude
    Is this your business?
  14. 14Sanitär Heinze6%

    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 Berlin. Which plumbing company should I call?, from Claude
    Is this your business?
  15. 15Meisterbetrieb Sanitär Schmidt6%

    95%: 2 to 18%

    ChatGPT
    0%
    Claude
    17%
    Gemini
    0%
    Questions
    2 of 4
    Avg. position
    4.5

    Named in answers to

    • I have a leaking pipe at home in Berlin. Which plumbing company should I call?, from Claude
    • I need an emergency plumber in Berlin 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 Berlin: is this your field?

68different names in 36 answers, 53 of them only once. The assistants change their minds from one answer to the next.

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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 Berlin, ChatGPT, Claude and Gemini named Thermondo most often, in 22% of answers (its AI Recommendation Rate), then Rohrreinigung Berlin 24h (14%) and B&O (14%). Across 36 answers they named 68 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 · Berlin

22% of answers named Thermondo

Answers
36
Businesses named
68
Named only once
53
Named by 2+ assistants
5 of 15
Named again on a rerun
16%

Edition November 2026. Download the data

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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
1B&O33%Thermondo42%Sanitär-Notdienst Berlin33%
2AIRA25%Rohrreinigung Berlin 24h42%K&S Sanitärtechnik25%
3Bär & Ollenroth KG25%Berliner Wasserbetriebe Notdienst25%Böhm & Sohn25%
4Thermondo17%Heizung Sanitär Berlin17%Bäder & Heizung Berlin GmbH25%
5No other name twiceHaustechnik Berlin GmbH17%Klempner Berlin 24h Notdienst17%

Claude named no business in 3 of its 12 answers.

Questions about plumbers in Berlin

How AI assistants recommend plumbers

ChatGPT, Claude and Gemini named Thermondo most often, in 22% of 36 answers, then Rohrreinigung Berlin 24h (14%) and B&O (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 B&O most often (33% of its answers), Claude Thermondo (42%) and Gemini Sanitär-Notdienst Berlin (33%). 5 of the 15 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, 16% 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 Berlin, AIGROW AI Visibility Index, November 2026
<a href="https://aigrow.gg/index/plumbers/berlin"><img src="https://aigrow.gg/badges/index/2026-11/plumbers/berlin.svg" width="312" height="100" alt="Named by AI assistants: Plumbers in Berlin, 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 Klempner in Berlin?Who is the best plumber in Berlin?
  2. 2Bei mir zu Hause in Berlin leckt ein Rohr. Welchen Sanitärbetrieb soll ich anrufen?I have a leaking pipe at home in Berlin. Which plumbing company should I call?
  3. 3Ich brauche heute Abend einen Notdienst-Installateur in Berlin. Wen empfiehlst du?I need an emergency plumber in Berlin tonight. Who would you recommend?
  4. 4Welchem Installateur in Berlin würdest du den Austausch eines Warmwasserspeichers anvertrauen?Which plumber in Berlin 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 Germany. From the AI Source Map: 8 answers.

See every site for this category
trustlocal.de
Read in 88% of the answers
reddit.com
Read in 88% of the answers
werkenntdenbesten.de
Read in 75% of the answers

AI Visibility Index

Elsewhere in the Index

Plumbers elsewhere
CologneDüsseldorfFrankfurtHamburgHanoverLeipzig
Also in Berlin
DentistsLawyersAccountantsGymsReal estate agenciesRestaurants

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

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Read the method

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