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Lab study · Plumbers in Sofia

Which Plumber in Sofia Does AI Recommend?

We asked ChatGPT, Gemini and Perplexity four questions about plumbers in Sofia, three times each, and searched the same questions on Google from Sofia. Between them the assistants named 70 plumbers. Not one was named by all three.

The questions: „Препоръчай добър водопроводчик в София“ (Recommend a good plumber in Sofia); „Спешен водопроводчик в София, денонощно“ (An emergency plumber in Sofia, round the clock); „Колко струва водопроводчик в София и кого да повикам?“ (How much does a plumber cost in Sofia and who should I call?); "How do I find a reliable plumber in Sofia?".

  • 36 AI answers
  • 70 named
  • 0 by all three
  • 40 by Gemini

Same question, four different answers

Pick a question. These are the names each assistant gave the first time we asked, in their order, next to Google's map for the same search in Sofia. A glowing name came up in more than one answer.

We asked

„Препоръчай добър водопроводчик в София“

Recommend a good plumber in Sofia

ChatGPT

  1. ВиК София Експресен Водопроводчик
  2. Спешни ВиК услуги
  3. Спешни ВиК услуги София и смяна на щрангове
  4. Тубо ЕООД, ВиК услуги

Gemini

  1. ВиК София ЕООД
  2. Водата Ми
  3. 151.bg

Perplexity

  1. Александър
  2. Евгений
  3. ВиК екипът (02

Google's map

Google showed no map for this search.

We asked

„Спешен водопроводчик в София, денонощно“

An emergency plumber in Sofia, round the clock

ChatGPT

  1. Спешни ВиК услугиAlso named in another answer
  2. Аварийни ВиК услуги и смяна на щрангове
  3. Домашен майстор
  4. Тубо ЕООД, ВиК услуги
  5. vikuslugi-sofiaAlso named in another answer
  6. денонощни ВиК услуги (vik-avarii.com,

Gemini

  1. Денонощни аварийни ВиК ремонти и спиране на течове
  2. Спешни аварийни ВиК услуги, 411.bg
  3. vikuslugi-sofiaAlso named in another answer
  4. Бърза реакция при ВиК аварии
  5. Дежурни ВиК ремонти, avariq.com
  6. Експресни аварийни ВиК услуги и отпушване

Perplexity

  1. ВиК София
  2. Vikkanal

Google's map

  1. Спешни ВиК услугиAlso named in another answer
  2. Вик Услуги София Експресен Водопроводчик
  3. ВиК Услуги и Водопроводчик Денонощно

We asked

„Колко струва водопроводчик в София и кого да повикам?“

How much does a plumber cost in Sofia and who should I call?

ChatGPT

  1. Спешни ВиК услуги
  2. ВиК София ЕООДAlso named in another answer
  3. Тубо ЕООД, ВиК услуги
  4. Интер канали

Gemini

  1. SOS ВиК
  2. ВиК София ЕООДAlso named in another answer
  3. vikuslugi-sofia

Perplexity

It named no business.

Google's map

Google showed no map for this search.

We asked

„How do I find a reliable plumber in Sofia?“

ChatGPT

  1. Спешни ВиК услуги
  2. Тубо ЕООД, ВиК услуги
  3. Синая 90 ЕООД
  4. Интер канали

Gemini

  1. 151.bg
  2. VikSofia.com
  3. Avarni-Vik-Uslugi.com

Perplexity

It named no business.

Google's map

  1. Vik Services Sofia Express Repair
  2. ВиК услуги София, Капитал Сити
  3. Emergency plumbing services Sofia and replacement of risers

First of three runs, 30 October 2026. ChatGPT as people see it in Bulgaria; Gemini and Perplexity with web search on; Google searched from Sofia.

How much do they agree?

Across all 36 answers, Gemini named 40, ChatGPT 24 and Perplexity 9. The middle is empty: nobody was named by all three.

213882100
  • ChatGPT
  • Gemini
  • Perplexity
  • All three
  • Only ChatGPT: 21
  • Only Gemini: 38
  • Only Perplexity: 8
  • ChatGPT and Gemini: 2
  • ChatGPT and Perplexity: 1
  • Gemini and Perplexity: 0
  • All three: 0

The most named plumbers in Sofia

Named most often across all 36 AI answers, which assistants named them, and whether Google's map showed them for any of our searches.
#BusinessAnswers it was inWho named itOn Google's map
1Спешни ВиК услуги12ChatGPT: YesGemini: NoPerplexity: NoYes
2Тубо ЕООД, ВиК услугиnamed under 5 spellings9ChatGPT: YesGemini: NoPerplexity: NoNo
3ВиК София ЕООД5ChatGPT: YesGemini: YesPerplexity: NoNo
4vikuslugi-sofianamed under 3 spellings4ChatGPT: YesGemini: YesPerplexity: NoNo
5151.bg3ChatGPT: NoGemini: YesPerplexity: NoNo
6Vikkanal3ChatGPT: NoGemini: NoPerplexity: YesNo
7Александърnamed by first name only3ChatGPT: NoGemini: NoPerplexity: YesNo
8ВиК София3ChatGPT: NoGemini: NoPerplexity: YesNo
9Евгенийnamed by first name only3ChatGPT: NoGemini: NoPerplexity: YesNo
10Интер канали3ChatGPT: YesGemini: NoPerplexity: NoNo
11Vik Services Sofia Express Repair2ChatGPT: YesGemini: NoPerplexity: NoYes
12VikSofia.com2ChatGPT: NoGemini: YesPerplexity: NoNo

A business is counted once per answer. Different spellings of the same name were joined using rules we checked by hand.

Where the assistants read about plumbers

The websites the assistants cited when answering these four questions, sized by how often.

  • viksofia-eood.com10 times
  • maistorplus.com9 times
  • rabotilo.bg8 times
  • vikpomosht.com7 times
  • rabotilo.bg7 times
  • vikuslugi-sofia.com7 times
  • burzo.net6 times
  • daibau.bg6 times
  • vikremont.com6 times
  • sites.google.com6 times
  • sofiyskavoda.bg6 times
  • justdial.com6 times
  • sinaia-vik.com6 times
  • vodoprovodchikuslugi.com5 times
  • viksofia.eu5 times
  • daibau.bg4 times

Lime: a business's own website. Outlined: a list, directory, booking site or forum. Crossed out: a foreign directory with nothing to do with Sofia.

Four lessons for plumbers in Sofia

What the assistants got wrong

What plumbers in Sofia can do

0 of 6 checked on your site

  1. Make your Google Business Profile complete and exact

    ChatGPT reads your rating, reviews, hours and address straight from Google Maps. Fill in every field, choose the right categories and keep your hours current.

  2. Build a full profile on MaistorPlus and Rabotilo

    Perplexity sent people there in half its answers. Use your full name and company, not just a first name.

  3. Say "round the clock" only if you are

    The emergency question favoured whoever said round the clock. Make sure your hours everywhere match.

  4. Use one name, one phone and one address everywhere

    In Bulgarian and in Latin letters, identical on your site, Google, Facebook and every directory. Every new spelling splits you in two.

  5. Publish your prices in euro, in plain words

    Price questions were answered from pages that state prices as text. Old prices in leva are still being repeated.

  6. Ask the assistants about yourself every month

    The four questions on this page are a good start. Fix any wrong fact where it comes from.

Questions

Which plumber in Sofia does AI recommend?

None was named by all three assistants. ChatGPT named Спешни ВиК услуги (Emergency Plumbing Services) most often; Perplexity often pointed people to MaistorPlus and Rabotilo instead.

How can plumbers in Sofia get recommended by ChatGPT?

ChatGPT leans on Google Maps, so start with a complete and exact Google Business Profile. Then use one name everywhere, be on the lists the assistants read for your sector, and say plainly on your own site what you do and what it costs, in euro.

How did you test this?

We asked ChatGPT, Gemini and Perplexity the four questions on this page, three times each, on 30 October 2026, and searched the same questions on Google from Sofia. The method and all the data are on the main study page.

Keep reading

What does AI say about your business?

We check what ChatGPT, Gemini and Perplexity say about you, where they read it and what they get wrong, then fix it with you.

Ask us to check yoursAll ten sectors

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