Local SEO for Plumbers: A Guide Built on 691 AI Answers in 20 Cities
Local SEO for plumbers is the work of getting your company named when someone nearby needs a plumber: in Google's map pack and search results, and now in the AI answers people read before they click anything. Most guides cover the first half. We measured the second. We asked ChatGPT, Perplexity, Google AI Mode and Google AI Overviews five plumber questions in 20 US cities, twice, three days apart, and then looked up every plumber they agreed on.
The short answer: Google's AI reads your Google Business Profile, ChatGPT and Perplexity read directories and city ranking sites, and the plumbers all of them name are well reviewed, claimed and established. The steps below follow that order. Where a step rests on our data, we say so. Where it's standard practice we didn't test, we say that too.
Data captured November 6 and November 9, 2026. This page reports that capture and won't be updated with new data; later trades and re-runs get their own pages.
The Short Version
- Google Business Profile is the source for Google's AI. Google AI Mode linked profile cards in 152 of its 198 answers. All 152 consensus picks we could match had a claimed profile, against 77% of plumber listings overall.
- Reviews separate the named from the rest, but they aren't the whole story. The plumbers the engines agreed on had a median of 586 Google reviews. A claimed plumber with at least one review in the same cities had 24. Yet 1,454 plumber listings had at least 586 reviews, and only 73 of them were among the plumbers the engines agreed on.
- ChatGPT and Perplexity read other sites. 55% of ChatGPT answers and 74% of Perplexity answers cited a city "best plumbers" ranking site. Google's AI almost never did (1-2%).
- One brand is everywhere. Roto-Rooter was named in 46% of answers, in all 20 cities, and in 73% of answers to the emergency question.
- Engines disagree. Two engines answering the same question shared about 1 in 6 of the plumbers they named.
What We Measured
- Questions (5): "Who is the best plumber in [city]?", "I need an emergency plumber in [city] tonight. Who should I call?", "What's a reliable plumbing company in [city] for a clogged drain?", "Which plumbers in [city] are best for water heater replacement?" and "What are the top-rated plumbing companies in [city]?"
- Cities (20): New York, Los Angeles, Chicago, Houston, Phoenix, Philadelphia, Dallas, Atlanta, Miami, Seattle, Denver, Boston, Nashville, Minneapolis, Kansas City, Tulsa, Boise, Des Moines, Knoxville and Spokane.
- Engines (4): ChatGPT, Perplexity, Google AI Mode and Google AI Overviews. The city was in every question. The two Google engines also searched from that city; ChatGPT ran at US level and Perplexity without a location.
- Runs (2): November 6 and November 9, 2026, same questions. 800 attempts, 691 usable answers: Google showed an AI Overview for 93 of its 200 searches, and 10 calls failed.
- Consensus picks: the 154 plumbers named by three or more engines in a city in both runs. We checked every one against Google Business Profile data within 60 km of the city (152) or the firm's own website (2). All are real plumbing or HVAC companies in that metro.
- City baseline: every Google Business Profile listed as a plumber within 60 km of each city, 26,953 listings, so each pick can be compared with its own market.
Metrics were set before the first answer came in, and nothing was published until the second run confirmed the first.
Step 1: Google Business Profile for Plumbers Is What Google's AI Reads
Google AI Mode built its plumber answers from Business Profile listings. It linked profile cards (name, rating, address, website) in 152 of its 198 answers, and 58 answers linked straight to a firm's online booking page.
The plumbers all four engines agreed on looked alike on their profiles:
| Google Business Profile | AI consensus picks | All plumber listings, same 20 cities |
|---|---|---|
| Claimed by the owner | 152 of 152 | 77% |
| Primary category | Plumber for 136 of 152 (the rest HVAC, AC or furnace) | Plumber (all) |
| Median Google reviews | 586 | 24 (claimed, at least one review) |
| Median rating | 4.9 | 4.9 |
What to do, most of it standard practice that our data is consistent with:
- Claim and verify the profile. Every pick had. Almost a quarter of plumber listings haven't.
- Use "Plumber" as the primary category and add the secondary ones you do (drain cleaning, water heater installation). Most picks list Plumber first.
- Keep name, phone, hours and service area accurate, and match them to your website. AI Mode shows profile details such as name, rating and address in its answer.
- Add online booking if you take it. AI Mode linked booking pages in 58 answers. A link that books the job beats one that leads to a phone number.
Step 2: Reviews: Necessary, Not Sufficient
Ratings didn't separate anyone: the median was 4.9 for the picks and for everyone else, and no pick was below 4.5. Review count did. Against claimed, reviewed plumbers in their own city, the median pick sat at the 91st percentile, and 86% were in the top quarter.
But review count alone doesn't get you named. 1,454 plumber listings had at least 586 reviews, and only 73 of them were consensus picks. Only 27 of the 152 picks were among their city's 10 most-reviewed plumbers.
This is a correlation, not a test. Firms with hundreds of reviews tend to also have strong websites, directory listings and press, and we didn't separate those. What the data does say: a plumber with a handful of reviews is very unlikely to be the one every engine names, and a plumber with thousands isn't guaranteed to be.
What to do: ask every finished job for a review, reply to them, and treat count over time as the goal. A perfect rating on 12 reviews isn't the profile these engines were naming.
Step 3: Directories and Citations: What ChatGPT and Perplexity Read
ChatGPT and Perplexity don't read Business Profiles the way Google's AI does. They cite the open web, and for plumbers a large part of it is directories and lists. We classified every cited site by hand:
| Share of cited sites | Directories and marketplaces | Established rankings and media | City ranking and lead-gen sites | National brand sites | Local business sites and other |
|---|---|---|---|---|---|
| ChatGPT | 21% | 10% | 29% | 5% | 36% |
| Perplexity | 26% | 8% | 24% | 16% | 27% |
| Google AI Mode | 29% | 0% | 0% | 33% | 38% |
| Google AI Overviews | 21% | 2% | 2% | 3% | 71% |
Google's own links aren't in that table. The directories cited most often were Thumbtack, ConsumerAffairs, Angi, HomeAdvisor, BBB and Yelp.
What to do: claim and complete your listings on those directories with the same name, address and phone as your Business Profile. Consistent listings ("citations") are long-standing local SEO practice. Our data adds a second reason: they're the pages ChatGPT and Perplexity quote.
Step 4: Get on the City "Best Plumbers" Lists
This is the step most local SEO guides don't have yet. 55% of ChatGPT answers and 74% of Perplexity answers cited at least one city "best plumbers" ranking or lead-gen site. Google's two AI surfaces almost never did (1-2%).
Several of these sites say they score local businesses from Google Maps and review data and invite businesses to claim a listing. Some say placement can't be bought; at least one sells it directly ("Claim your spot in Kansas City to get featured in AI answers," with paid plans that "can add a capped, labeled boost"). Established ranking sites such as Expertise.com, ThreeBestRated and Best Pick Reports also appear, and one Minneapolis plumber was cited for its own "Best Plumbers in Minneapolis" blog post.
What to do: search "best plumbers in [your city]", read the first two pages, and note which lists exist and whether you're on them. Where a list takes submissions or lets you claim a profile, do it, and make sure the details match your Business Profile. Read how each one ranks before paying for anything: we measured which sites the engines cite, not whether paying a list gets you named.
About 15% of cited links pointed at a long tail we didn't review one by one, so these shares are a floor.
Step 5: Service Pages for the Jobs People Ask About
The question changes the answer more than the city does. Here's how often each question produced an answer naming Roto-Rooter, the one national brand present everywhere:
| Question | Answers naming Roto-Rooter |
|---|---|
| Emergency plumber tonight | 100 of 137 (73%) |
| Clogged drain | 78 of 144 (54%) |
| Water heater replacement | 69 of 131 (53%) |
| Top-rated plumbing companies | 45 of 140 (32%) |
| Best plumber | 26 of 139 (19%) |
Urgent, specific jobs pulled in the national brand. Open "who's best" questions mostly went to local firms. If you take emergency or drain work, that's where you compete with a national brand, and a page that plainly says what you do, where and when (24/7, the neighborhoods you cover) is standard on-page practice for exactly those searches.
What to do: give each core job its own page (emergency plumbing, drain cleaning, water heater replacement), name the areas you serve on it, and match the services listed on your Business Profile. Add LocalBusiness or Plumber structured data with the same name, address and phone.
Step 6: Track It on Every Engine, More Than Once
The engines rarely agree. For the same question in the same city, two engines shared 13-23% of the plumbers they named. Some of that is noise, so the second run measured it: the same engine asked again three days later shared 33-51%.
| Engine | Same engine, 3 days later | First-named plumber unchanged |
|---|---|---|
| Perplexity | 0.51 | 63% of questions |
| ChatGPT | 0.49 | 54% of questions |
| Google AI Overviews | 0.35 (20 pairs) | 10 of 20 questions |
| Google AI Mode | 0.33 | 36% of questions |
The figures are an overlap score from 0 to 1, where 1 means the same list.
Two lessons. Being named by ChatGPT says little about Google's AI, so check each engine. And one answer is a weak signal: ask the same questions several times before deciding you're visible or invisible. Keep tracking the map pack and your call volume as usual; AI answers are an addition, not a replacement.
Who AI Recommends: the National Brand and the Local Crowd
Roto-Rooter was named in 318 of 691 answers (46%), in all 20 cities in both runs, and first in 98. We screened all 753 mentions of its name for warning language and read every flagged one: none told the reader to avoid it.
| National brand | Answers naming it (of 691) | Cities |
|---|---|---|
| Roto-Rooter | 318 (46%) | 20 of 20 |
| Mr. Rooter Plumbing | 80 (12%) | 14 |
| Zoom Drain | 32 (5%) | 11 |
| Benjamin Franklin Plumbing | 24 (3%) | 6 |
By engine, Perplexity named Roto-Rooter in 72% of its answers, Google AI Mode in 45%, AI Overviews in 44% and ChatGPT in 22%. Perplexity cited rotorooter.com in 128 answers, which goes some way to explaining its lean.
Everyone else was local. About 86% of businesses named were local or regional firms, 99% of answers named at least one, and a city produced about 43 different names per run. A handful came up again and again. These are the plumbers three or more engines named in both runs:
| City | Plumbers named by 3+ engines in both runs | Count |
|---|---|---|
| Atlanta, GA | Atlantis Plumbing · Fix & Flow Plumbing Co · Peach Plumbing & Drain · Atlanta Plumbing & Drain · Plumb Works Inc · Plumbing Express | 6 |
| Boise, ID | Beacon Plumbing · Five Star Service Pros Plumbing · Wickstrom Plumbing Heating & Cooling · Goodson Plumbing Services · McDaniel Plumbing LLC · Cloverdale Plumbing · Gary The Plumber LLC · Express Plumbing Heating & Air · Drake Mechanical | 9 |
| Boston, MA | Horvitz Plumbing & Heating · Vaughan Plumbing & Heating · Boston Standard Plumbing · Green Tech Plumbing & Heating | 4 |
| Chicago, IL | Rescue Plumbing · Goode Plumbing · Vanguard Plumbing and Sewer · J. Blanton Plumbing, Sewer & Drain · First Chicago Plumbing · Walsh & Son Plumbing and Sewer · Oasis Plumbing, Heating & Cooling · Plumbers 911 Chicago* | 8 |
| Dallas, TX | Workman Plumbing · Milestone Electric, A/C, & Plumbing · Public Service Plumbers · Cody & Sons Plumbing, Heating & Air · Berkeys Plumbing, A/C & Electrical · Metro Flow Plumbing · Baker Brothers Plumbing, Air & Electric · Mother Modern Plumbing · Anchor Plumbing Company | 9 |
| Denver, CO | Applewood Plumbing Heating & Electric · Speed Plumbing · Hyper Flow Service · Golden West Plumbing, Heating, Air Conditioning, and Electrical · A Better Plumber · Blue Sky Plumbing, Heating, Cooling & Electric · Brothers Plumbing, Heating & Electric · Cap Hill Plumbing · Rooterguy LLC · Mr. Perfect Plumbing | 10 |
| Des Moines, IA | Holt Plumbing & Heating, Inc · Clog Busters Drain Cleaning & Repair · Schaal Plumbing, Heating and Cooling · Bell Brothers Heating, Cooling & Plumbing · Thrasher Service Corp · Golden Rule Plumbing, Heating, Cooling & Electrical | 6 |
| Houston, TX | Wedgeworth Plumbing · Nick's Plumbing & Air Conditioning · H-Town Plumbers · Abacus Plumbing, Air Conditioning, & Electrical · Village Plumbing, Air & Electric · John Moore Services · Texas Quality Plumbing · Hot Water Guys · Hugo Plumbing | 9 |
| Kansas City, MO | Quality Plumbing Inc · Anthony Plumbing, Heating, Cooling & Electric · Inception Plumbing · A.B. May Heating, A/C, Plumbing & Electrical · Buckner's Heating, Cooling, and Plumbing · Poor John's Plumbing | 6 |
| Knoxville, TN | Tennessee Standard Plumbing · Hard Knox Plumbing · The Plumbing Authority · Pipe Wrench Plumbing, Heating & Cooling · Lawrence Plumbing LLC · WHiZPRO PLUMBER · Hiller Plumbing, Heating, Cooling & Electrical · Best Plumber | 8 |
| Los Angeles, CA | John's Plumbing & Drain Services · Red Lilly Plumbing · A-1 Total Service Plumbing · Pacific Plumbing Team · JW Plumbing, Heating and Air · Monkey Wrench Plumbing, Heating, Air & Electric · Coast to Coast Plumbing | 7 |
| Miami, FL | Oasis Plumbing · Main Plumbing Services · Mr. Clog Plumbing · Hernandez Plumbing Co · Miami 305 Plumbing · Miami 24/7 Plumbing | 6 |
| Minneapolis, MN | Paul Bunyan Plumbing & Drains · Erik Nelson Plumbing LLC · Ron the Sewer Rat · Cichy's Water & Sewer · Water Heaters Now! | 5 |
| Nashville, TN | Doctor Drips Plumbing · 100 Percent Plumbing · Hiller Plumbing, Heating, Cooling & Electrical · Parthenon Plumbing, Heating, & AC Repair · Smooth Saling Plumbing & Water Heater Replacement | 5 |
| New York, NY | A&E NYC Plumbing · Vigilante Plumbing, Heating & Air Conditioning · Aladdin Plumbing Corp · Petri Plumbing, Heating, Cooling & Drain Cleaning · Taylor Group Plumbing, Heating, Mechanical & Sprinkler · Consider It Done Plumbing, Water Heaters, and Drain Cleaning · Joe The Plumber - Plumbing & Heating | 7 |
| Philadelphia, PA | Plumbing Pals · IFixdit Plumbing & Drains · Roger Ross Plumbing & Heating · Goodman Plumbing · KCS Plumbing · East Philly Plumbing & Heating · Ring The Bell Plumbing, Heating & Drains · Guaranteed Plumbing & Heating | 8 |
| Phoenix, AZ | Robins Plumbing, Inc · The Aussie Plumber · Parker & Sons · Wyman Plumbing & Mechanical LLC · Day & Night Air Conditioning, Heating & Plumbing · Somers Plumbers · Pink Plumbing & Sewer · Affordable Plumbing, Rooter and Water Heaters · HQ Plumbing & Air · Peerless Plumbing & NuDrain Phoenix · Maloney Plumbing & Drain Services | 11 |
| Seattle, WA | Bee's Plumbing and Heating · 2 Sons Plumbing & Sewer · Beacon Plumbing · Gene Johnson Plumbing & Heating · South West Plumbing · Bob Oates Sewer & Rooter · Ben's Plumbing & Drain Cleaning · Best Plumbing · Anthony's Plumbing · Craftsman Plumbing | 10 |
| Spokane, WA | Bulldog Rooter · Shaw Plumbing Heating & Air Conditioning · Raptor Rooter & Plumbing · JLR Plumbing · Action Drain & Plumbing · Division One Plumbing · Gold Seal Plumbing · Cole's Plumbing · Tactical Plumbing & Piping · Action Craft Experts · Platinum Rooter & Plumbing · Top Dog Plumbing & Drain · Plumb Zebra | 13 |
| Tulsa, OK | Williams Plumbing & Drain Service · Half Moon Plumbing & Electric · Maston's Plumbing & Drain · Acts Of Service Plumbing · Tulsa Plumbing and Remodeling, LLC · O'Connor Plumbing · York Plumbing | 7 |
* Plumbers 911 is a national network of affiliated local plumbers.
"Local or regional" means a locally branded firm. Some are large multi-location companies, and we didn't check who owns them. Download the full list as CSV, with the engines and answer counts behind each name.
Limits of This Study
- One trade, 20 cities, 5 questions, two runs, one week. 32-37 usable answers per city. Each city's list is a snapshot, not a ranking.
- Locations differ by engine. The Google engines searched from each city; ChatGPT ran at US level and Perplexity without a location. All four had the city in the question.
- AI Overviews often didn't appear: 93 of 200 searches, so their figures rest on fewer answers.
- Names came from automated extraction, grouped by rule. Every name printed here was checked by hand.
- Nothing here is causal. Reviews, profiles, directory listings and ranking-site placement go together in established firms, and we didn't test which of them makes an engine pick a business.
- The map pack wasn't measured. This study covers AI answers. Map-pack rankings follow Google's own local ranking, which this page doesn't test.
Check What AI Says About Your Plumbing Company
The free AI visibility checker asks ChatGPT, Google AI Overviews, Google AI Mode and Perplexity about your business, twice, and shows who gets named instead of you. You can edit the questions it proposes, so put your city and your main jobs in them. For the same two-run design applied to the sources AI cites, see how often AI citations change.
Frequently Asked Questions
What is local SEO for plumbers?
Local SEO for plumbers is the work of getting a plumbing company found when people nearby search for one: in Google's map pack, in local search results, and now in AI answers from Google AI Mode, AI Overviews, ChatGPT and Perplexity. The core of it is a complete, claimed Google Business Profile, steady reviews, consistent directory listings and clear service pages.
How important is Google Business Profile for plumbers?
Very, and more so with AI search. In our test of 20 US cities, Google AI Mode linked Business Profile cards in 152 of its 198 plumber answers. Every one of the 152 plumbers we could match among those the AI engines agreed on had a claimed profile, against 77% of plumber listings overall.
Do reviews help a plumber get recommended by AI?
They're strongly associated with it. The plumbers four AI engines agreed on had a median of 586 Google reviews, against 24 for a claimed, reviewed plumber in the same cities. But of 1,454 plumbers with at least 586 reviews, only 73 were among them, so reviews alone don't explain it, and ratings didn't separate anyone (median 4.9 for both groups).
Where does ChatGPT get its plumber recommendations?
From the open web. In our test, ChatGPT and Perplexity cited directories such as Thumbtack, Angi, BBB and Yelp, plus city "best plumbers" ranking sites: 55% of ChatGPT answers and 74% of Perplexity answers cited at least one ranking site. Google's AI surfaces almost never cited those sites and used Business Profile listings instead.
Can a local plumber compete with Roto-Rooter in AI answers?
On most questions, yes. Roto-Rooter was named in 46% of answers overall, but about 86% of the businesses named were local or regional firms. The national brand was strongest on urgent jobs: 73% of answers to the emergency question named it, against 19% when people asked for the best plumber.
