NamedTest

Which plumbers does AI name in Baltimore, MD?

Catons Plumbing, Heating & Air Conditioning and Len The Plumber were the plumbers AI named most often in Baltimore, MD, in 10 of 20 answers each in October 2026.

Across 20 answers to 10 customer questions, Perplexity and Gemini (model knowledge) named 33 different plumbers. The 6 named most often held 52% of all mentions.

Perplexity named Roto-Rooter most often (7 of 10 answers) and Gemini named Len The Plumber most often (10 of 10 answers).

Answers collected October 31, 2026. AI answers change from day to day.

The plumbers AI named most

BusinessAnswers naming it
Catons Plumbing, Heating & Air ConditioningNamed by Perplexity and Gemini10 of 20
Len The PlumberNamed by Gemini10 of 20
Roto-RooterNamed by Perplexity7 of 20
Heil PlumbingNamed by Gemini4 of 20
All Clear Plumbing & Drain ServiceNamed by Perplexity and Gemini2 of 20
C.A. Taciak & SonsNamed by Perplexity2 of 20
Jerry's Plumbing, Heating & AirNamed by Gemini2 of 20
Michael & SonNamed by Perplexity2 of 20
Michael Bonsby Heating & Air Conditioning (Plumbing Division)Named by Gemini2 of 20
Prime PlumbingNamed by Gemini2 of 20

Who each AI tool named

Perplexity

10 of its 10 answers named at least one business.

  1. Roto-Rooter (7)
  2. Catons Plumbing, Heating & Air Conditioning (3)
  3. C.A. Taciak & Sons (2)
  4. Michael & Son (2)
  5. Warrior Plumbing & Heating (2)
  6. Abbott Brothers Plumbing & Heating (1)
  7. Albright's Mechanical (1)
  8. All Clear Plumbing & Drain Service (1)
  9. BFMD (1)
  10. FJL Home Services (1)

Gemini (model knowledge)

10 of its 10 answers named at least one business.

  1. Len The Plumber (10)
  2. Catons Plumbing, Heating & Air Conditioning (7)
  3. Heil Plumbing (4)
  4. Jerry's Plumbing, Heating & Air (2)
  5. Michael Bonsby Heating & Air Conditioning (Plumbing Division) (2)
  6. Prime Plumbing (2)
  7. Ace Plumbing, Heating & Air Conditioning (1)
  8. Ace Plumbing, Heating & Cooling (1)
  9. All Clear Plumbing & Drain Service (1)
  10. Apple Plumbing & Heating (1)

What AI named for each question

The businesses each AI tool named in its answer to each question, in the order the answer named them.

  1. I need an emergency plumber in Baltimore, MD right now. Who should I call?

    Perplexity

    1. Catons Plumbing, Heating & Air Conditioning
    2. Roto-Rooter

    Gemini

    1. Len The Plumber
    2. Heil Plumbing
    3. Ace Plumbing, Heating & Air Conditioning

  2. How much does drain cleaning cost in Baltimore, MD, and which plumbers charge fair prices?

    Perplexity

    1. C.A. Taciak & Sons
    2. Michael & Son
    3. Save The Day Plumbing & Drain Cleaning
    4. Jackson Plumbing and Mechanical

    Gemini

    1. Len The Plumber
    2. Catons Plumbing, Heating & Air Conditioning
    3. Jerry's Plumbing, Heating & Air
    4. Michael Bonsby HVAC & Plumbing

  3. Who is the most trusted plumber in Baltimore, MD?

    Perplexity

    1. Roto-Rooter
    2. Warrior Plumbing & Heating

    Gemini

    1. Heil Plumbing
    2. Len The Plumber
    3. Ace Plumbing, Heating & Cooling
    4. Prime Plumbing

  4. Which plumbing company in Baltimore, MD is best for water heater repair?

    Perplexity

    1. Abbott Brothers Plumbing & Heating
    2. Mr. Rooter Plumbing of Greater Baltimore

    Gemini

    1. Len The Plumber
    2. Heil Plumbing
    3. Catons Plumbing, Heating & Air Conditioning
    4. Apple Plumbing & Heating

  5. My basement is flooding in Baltimore, MD. Which plumber can come today?

    Perplexity

    1. Catons Plumbing, Heating & Air Conditioning
    2. Roto-Rooter

    Gemini

    1. Len The Plumber
    2. All Clear Plumbing & Drain Service
    3. Catons Plumbing, Heating & Air Conditioning
    4. Michael Bonsby Heating & Air Conditioning (Plumbing Division)
    5. Servpro
    6. ServiceMaster

  6. Who is the most affordable plumber near Baltimore, MD?

    Perplexity

    1. FJL Home Services

    Gemini

    1. Len The Plumber
    2. Jerry's Plumbing, Heating & Air
    3. Catons Plumbing, Heating & Air Conditioning
    4. Budget Plumbing & Heating

  7. Which plumbers in Baltimore, MD have the best reviews?

    Perplexity

    1. Roto-Rooter
    2. Wes Plumbing, Heating & Drain
    3. Warrior Plumbing & Heating
    4. All Clear Plumbing & Drain Service
    5. Saffer Total Home
    6. Mahon Plumbing

    Gemini

    1. Heil Plumbing
    2. Len The Plumber
    3. F.H. Furr Plumbing, Heating, Air Conditioning & Electrical
    4. Catons Plumbing, Heating & Air Conditioning
    5. Mike’s Plumbing & Heating

  8. I need water heater installation in Baltimore, MD. Which local plumber do you recommend?

    Perplexity

    1. Albright's Mechanical
    2. Roto-Rooter

    Gemini

    1. Len The Plumber
    2. Michael Bonsby Heating & Air Conditioning (Plumbing Division)
    3. Catons Plumbing, Heating & Air Conditioning
    4. Falcon Plumbing

  9. Is there a 24 hour plumber in Baltimore, MD that answers the phone at night?

    Perplexity

    1. Catons Plumbing, Heating & Air Conditioning
    2. Roto-Rooter

    Gemini

    1. Prime Plumbing
    2. Len The Plumber
    3. Billy Gould Plumbing
    4. B&D Plumbing, Heating & Air

  10. What is a reasonable price for sewer line repair in Baltimore, MD, and who should I get quotes from?

    Perplexity

    1. C.A. Taciak & Sons
    2. Michael & Son
    3. BFMD
    4. Roto-Rooter

    Gemini

    1. Len The Plumber
    2. Catons Plumbing, Heating & Air Conditioning

Sources AI cited

10 of the 20 answers cited sources. The sites cited most, by the number of answers citing them:

  1. consumeraffairs.com (7)
  2. thumbtack.com (6)
  3. homeadvisor.com (5)
  4. rotorooter.com (5)
  5. lentheplumber.com (4)
  6. michaelandson.com (4)
  7. mrrooter.com (4)
  8. callcatons.com (3)
  9. companionlink.com (3)
  10. fastplumbernearme.com (3)

Gemini (model knowledge) answers from what it learned in training, without a web search, so it cites no sources.

What the most-named plumbers have in common

2 of the 6 were named by both Perplexity and Gemini. The rest were named by one tool only, which is common: the tools search and remember differently.

4 of the 6 had their own website among the sources the answers cited, and AI gave a website for 4 of them.

By the kind of question: 5 of them came up for urgent requests, 4 for questions about price, 5 for questions about trust and reviews, and 4 for questions about a specific service.

How we measured this

We asked 10 questions a customer might ask about plumbers in Baltimore, MD, once on each AI tool, through each tool's official API. For example:

  • I need an emergency plumber in Baltimore, MD right now. Who should I call?
  • Who is the most trusted plumber in Baltimore, MD?
  • Which plumbing company in Baltimore, MD is best for water heater repair?

Perplexity searches the web and shows its sources. Gemini (model knowledge) answers without a web search, from what the model learned in training, so its picks can be out of date. A language model read each answer and listed the businesses it named, and a business counts once per answer. These results describe what AI said on these dates. They are not a rating of any business's work.

Data as of October 31, 2026.

Corrections

If a business name was misread, or a business is listed that has closed, email hello@namedtest.com. We check it against the stored answers and correct the page.

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Read the guide: How to get AI to recommend your plumbing business

Questions about this page

Which plumbers does AI name most in Baltimore, MD?

Catons Plumbing, Heating & Air Conditioning and Len The Plumber were the plumbers AI named most often in Baltimore, MD, in 10 of 20 answers each in October 2026.

Which AI tools were asked, and when?

Perplexity and Gemini, 10 customer questions each, answered between October 31, 2026 and October 31, 2026. Gemini (model knowledge) answers from what the model learned in training, without a web search.

How can a plumber get named by AI more often?

Make the business easy for AI to read and to trust: let AI crawlers into your website, keep your name, address and phone the same everywhere, answer common customer questions on your site, and earn reviews on the sites AI cites. The free check shows whether AI names your business today.