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AI Visibility Index · September 2026

Plumbers in Lisbon that AI assistants recommend

We asked ChatGPT, Claude and Gemini the four questions a buyer asks when looking for plumbers in Lisbon, three times each, in Portuguese, 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 · Lisbon
67%of answers named Canalizador 24 Horas
Answers
36
Businesses named
37
Named only once
19
Named by 2+ assistants
9 of 18
Named again on a rerun
35%

Edition September 2026. Download the data

Asked for plumbers in Lisbon, ChatGPT, Claude and Gemini most often named Canalizador 24 Horas (67% of answers), Reparações 24 Horas (33%) and Desentupimentos Lisboa 24H (28%). Across 36 answers they named 37 different businesses, 19 of them only once. Each of four buyer questions was asked three times, in Portuguese, 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 Lisbon named by AI assistants, September 2026
#BusinessAI Recommendation RateChatGPTClaudeGeminiQuestionsAvg. position
1Canalizador 24 HorasAlso written Canalizador Lisboa 24H, Canalizador Lisboa 24h, Canalizador 24 Horas Lisboa, Canalizador 24h Lisboa, Canalizador 24 Lisboa, Canalizador Lisboa 24 HorasIs this your business?67%95%: 50 to 80%83%75%42%4 of 41.2
2Reparações 24 HorasAlso written Reparações 24h, Reparações 24 horas, Reparações 24h Lisboa, Reparações 24 horas Lisboa, Reparações 24 Horas Lisboa, Reparações 24H LisboaIs this your business?33%95%: 20 to 50%0%0%100%4 of 42.1
3Desentupimentos Lisboa 24HAlso written Desentupimentos Lisboa 24 Horas, Desentupimentos Lisboa 24hIs this your business?28%95%: 16 to 44%50%33%0%3 of 42.3
4SOS CanalizadorAlso written SOS Canalizador LisboaIs this your business?28%95%: 16 to 44%17%25%42%4 of 42.9
5FixandoIs this your business?19%95%: 10 to 35%8%25%25%3 of 43
6SOS CanalizaçõesAlso written SOS Canalizações LisboaIs this your business?14%95%: 6 to 29%0%0%42%3 of 42.6
7Canalizadores Lisboa 24HAlso written Canalizadores 24 Horas Lisboa, Canalizadores Lisboa 24hIs this your business?11%95%: 4 to 25%0%0%33%3 of 41
8ZaaskIs this your business?11%95%: 4 to 25%8%25%0%2 of 42.3
9Canalizador Urgente LisboaIs this your business?11%95%: 4 to 25%17%8%8%3 of 43
10Desentupimentos LisboaAlso written Desentupimentos de LisboaIs this your business?11%95%: 4 to 25%0%17%17%2 of 43
11Lisboa CanalizaçõesIs this your business?11%95%: 4 to 25%0%0%33%4 of 43.8
12Canalizador LisboaIs this your business?8%95%: 3 to 22%0%0%25%1 of 41.7
13Lusíadas GásIs this your business?6%95%: 2 to 18%17%0%0%1 of 41
14Canalizador.ptIs this your business?6%95%: 2 to 18%17%0%0%1 of 42
15Canalizador Expresso LisboaIs this your business?6%95%: 2 to 18%8%8%0%2 of 42.5
16Canalizador SOS LisboaIs this your business?6%95%: 2 to 18%8%8%0%2 of 42.5
17LuságuaAlso written Luságua – Canalizadores 24h, Luságua CanalizaçõesIs this your business?6%95%: 2 to 18%17%0%0%2 of 42.5
18Canalizadores.ptIs this your business?6%95%: 2 to 18%0%0%17%2 of 44.5

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. 19 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
1Canalizador 24 Horas83%Canalizador 24 Horas75%Reparações 24 Horas100%
2Desentupimentos Lisboa 24H50%Desentupimentos Lisboa 24H33%Canalizador 24 Horas42%
3SOS Canalizador17%SOS Canalizador25%SOS Canalizador42%
4Canalizador Urgente Lisboa17%Fixando25%SOS Canalizações42%
5Lusíadas Gás17%Zaask25%Canalizadores Lisboa 24H33%

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

The questions

Asked word for word, three times each, to every assistant, in Portuguese. 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. 1Quem é o melhor canalizador em Lisboa?Who is the best plumber in Lisbon?
  2. 2Tenho um cano a pingar na minha casa em Lisboa. A que empresa de canalização devo ligar?I have a leaking pipe at home in Lisbon. Which plumbing company should I call?
  3. 3Preciso de um canalizador de urgência em Lisboa esta noite. Quem me recomendas?I need an emergency plumber in Lisbon tonight. Who would you recommend?
  4. 4Que canalizador em Lisboa escolherias para substituir um esquentador?Which plumber in Lisbon 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.

Elsewhere in the Index

Plumbers elsewhere
PortoBelo HorizonteRio de JaneiroSão PauloAarhusAmsterdam
Also in Lisbon
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