NamedTest

Which plumbers does AI name in Washington, DC?

Magnolia Plumbing, Heating & Cooling was the plumber AI named most often in Washington, DC: in 8 of 20 answers in October 2026.

Across 20 answers to 10 customer questions, Perplexity and Gemini (model knowledge) named 31 different plumbers. The 6 named most often held 53% of all mentions.

Perplexity named District Capital Services most often (7 of 10 answers) and Gemini named Magnolia Plumbing, Heating & Cooling most often (8 of 10 answers).

Answers collected October 27, 2026. AI answers change from day to day.

The plumbers AI named most

BusinessAnswers naming it
Magnolia Plumbing, Heating & CoolingNamed by Gemini8 of 20
District Capital ServicesNamed by Perplexity7 of 20
Roto-RooterNamed by Perplexity and Gemini7 of 20
Spartan Plumbing, Heating & Air ConditioningNamed by Gemini6 of 20
Haynes PlumbingNamed by Perplexity4 of 20
John C. FloodNamed by Gemini4 of 20
Len The PlumberNamed by Perplexity and Gemini4 of 20
CroppMetcalfeNamed by Gemini3 of 20
MoCo PlumbingNamed by Perplexity2 of 20
W.H. Parnell Plumbing & HeatingNamed by Gemini2 of 20

Who each AI tool named

Perplexity

10 of its 10 answers named at least one business.

  1. District Capital Services (7)
  2. Roto-Rooter (6)
  3. Haynes Plumbing (4)
  4. MoCo Plumbing (2)
  5. F.H. Furr (1)
  6. Fry Plumbing (1)
  7. Handyman Gold Hands Washington D.C. (1)
  8. Len The Plumber (1)
  9. Mallick Plumbing (1)
  10. Michael & Son (1)

Gemini (model knowledge)

10 of its 10 answers named at least one business.

  1. Magnolia Plumbing, Heating & Cooling (8)
  2. Spartan Plumbing, Heating & Air Conditioning (6)
  3. John C. Flood (4)
  4. CroppMetcalfe (3)
  5. Len The Plumber (3)
  6. W.H. Parnell Plumbing & Heating (2)
  7. B&B Plumbing, Inc. (1)
  8. DC Water (1)
  9. H&A Plumbing (1)
  10. John G. Webster (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 Washington, DC right now. Who should I call?

    Perplexity

    1. Roto-Rooter

    Gemini

    1. CroppMetcalfe
    2. W.H. Appliance & Plumbing
    3. Spartan Plumbing, Heating & Air Conditioning
    4. Len The Plumber

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

    Perplexity

    1. Haynes Plumbing
    2. District Capital Services
    3. Roto-Rooter

    Gemini

    1. Magnolia Plumbing, Heating & Cooling
    2. Spartan Plumbing, Heating & Air Conditioning
    3. H&A Plumbing
    4. Warner Service

  3. Who is the most trusted plumber in Washington, DC?

    Perplexity

    1. District Capital Services
    2. MoCo Plumbing

    Gemini

    1. Magnolia Plumbing, Heating & Cooling
    2. Spartan Plumbing, Heating & Air Conditioning
    3. W.H.L. Plumbing & Heating
    4. B&B Plumbing, Inc.

  4. Which plumbing company in Washington, DC is best for water heater repair?

    Perplexity

    1. District Capital Services
    2. Roto-Rooter

    Gemini

    1. W.H. Fine Plumbing & Heating
    2. Len The Plumber
    3. Magnolia Plumbing, Heating & Cooling
    4. John C. Flood

  5. My basement is flooding in Washington, DC. Which plumber can come today?

    Perplexity

    1. Washington Plumbing Team
    2. Len The Plumber

    Gemini

    1. Magnolia Plumbing, Heating & Cooling
    2. W.H. Parnell Plumbing & Heating
    3. John C. Flood
    4. ServPro
    5. ServiceMaster
    6. DC Water

  6. Who is the most affordable plumber near Washington, DC?

    Perplexity

    1. Handyman Gold Hands Washington D.C.
    2. District Capital Services

    Gemini

    1. Magnolia Plumbing, Heating & Cooling
    2. Spartan Plumbing, Heating & Air Conditioning
    3. John C. Flood
    4. Mike's Plumbing & Heating

  7. Which plumbers in Washington, DC have the best reviews?

    Perplexity

    1. District Capital Services
    2. MoCo Plumbing
    3. Roto-Rooter
    4. Haynes Plumbing
    5. Fry Plumbing

    Gemini

    1. Magnolia Plumbing, Heating & Cooling
    2. John G. Webster
    3. W.H. Parnell Plumbing & Heating
    4. Stang Plumbing & Heating
    5. CroppMetcalfe

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

    Perplexity

    1. Roto-Rooter
    2. District Capital Services
    3. Haynes Plumbing

    Gemini

    1. W.L. Gary Company
    2. John C. Flood
    3. Magnolia Plumbing, Heating & Cooling
    4. CroppMetcalfe

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

    Perplexity

    1. Mallick Plumbing
    2. Roto-Rooter

    Gemini

    1. Magnolia Plumbing, Heating & Cooling
    2. Spartan Plumbing, Heating & Air Conditioning
    3. Roto-Rooter
    4. Washington Gas

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

    Perplexity

    1. Haynes Plumbing
    2. District Capital Services
    3. Vito Services
    4. F.H. Furr
    5. Michael & Son

    Gemini

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

Sources AI cited

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

  1. consumeraffairs.com (8)
  2. lentheplumber.com (6)
  3. thumbtack.com (6)
  4. serviceagent.ai (5)
  5. rotorooter.com (4)
  6. bestprosintown.com (2)
  7. checkbook.org (2)
  8. exceptionalplumberdc.com (2)
  9. fhfurr.com (2)
  10. forbes.com (2)

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

1 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.

1 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: 4 of them came up for urgent requests, 6 for questions about price, 5 for questions about trust and reviews, and 5 for questions about a specific service.

How we measured this

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

  • I need an emergency plumber in Washington, DC right now. Who should I call?
  • Who is the most trusted plumber in Washington, DC?
  • Which plumbing company in Washington, DC 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 27, 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.

Does AI name your business?

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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 Washington, DC?

Magnolia Plumbing, Heating & Cooling was the plumber AI named most often in Washington, DC: in 8 of 20 answers in October 2026.

Which AI tools were asked, and when?

Perplexity and Gemini, 10 customer questions each, answered between October 27, 2026 and October 27, 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.