Best plumbers in Los Angeles, CA, according to AI
We ask ChatGPT, Claude, Gemini, Perplexity and 8 more AI assistants the questions real customers ask — like “Who are the best plumbers in Los Angeles, CA?” — and publish who they name. Here is this month's answer, ranked by how often they name each business.
As of October 1, 2026, Rooter Hero Plumbing & Air is the plumber AI assistants most recommend in Los Angeles, CA, named by 5 of 12 assistants. Mike Diamond Services and Roto-Rooter rank next.
AI's top plumbers in Los Angeles for October 2026
Every business below was named by the AI assistants themselves when we asked for plumbers in Los Angeles, CA. The more assistants that name a business — and the more often — the higher it ranks.
Mike Diamond Servicesmikediamondservices.com
Named by 4 of 12 AIs · 9 times
Microsoft CopilotDeepSeekMeta AIMistral
Open AI profile
#3
Roto-Rooterrotorooter.com
Named by 5 of 12 AIs · 7 times
Microsoft CopilotDeepSeekGrokMeta AIMistral
Open AI profile
- RankWho the AIs name most often, and most in agreement.
- AIs that name itHow many of the 12 assistants we asked put this business in their answer.
- vs last monthUp, down or new since the previous monthly edition.
Every plumber AI named (24)
Tap a name for that business's AI profile: rank history, which assistants name it, and who's just ahead.| Rank | Business & the AIs that name it | AIs that name it | Times named | vs last month |
|---|---|---|---|---|
| 1 |
Microsoft CopilotDeepSeekGrokMeta AIMistral
|
5 of 12 | 10 | ▲ 5 places up |
| 2 |
Microsoft CopilotDeepSeekMeta AIMistral
|
4 of 12 | 9 | ▲ 9 places up |
| 3 |
Microsoft CopilotDeepSeekGrokMeta AIMistral
|
5 of 12 | 7 | ▼ 2 places down |
| 4 |
Google AI OverviewsGeminiGrokMistral
|
4 of 12 | 6 | ▲ 17 places up |
| 5 |
Google AI OverviewsGeminiSiri
|
3 of 12 | 6 | ▲ 2 places up |
| 6 |
ClaudeGeminiMistralSiri
|
4 of 12 | 5 | ▼ 1 places down |
| 7 |
ChatGPTMicrosoft Copilot
|
2 of 12 | 5 | ▲ 1 places up |
| 8 |
Google AI OverviewsChatGPTMicrosoft CopilotPerplexity
|
4 of 12 | 4 | ▼ 6 places down |
| 9 |
ChatGPTGeminiMeta AI
|
3 of 12 | 4 | ▼ 5 places down |
| 10 |
GeminiMeta AI
|
2 of 12 | 4 | new |
| 11 |
Microsoft CopilotMeta AIMistral
|
3 of 12 | 3 | new |
| 12 |
Microsoft CopilotGeminiPerplexity
|
3 of 12 | 3 | same |
| 13 |
ChatGPTClaudeGemini
|
3 of 12 | 3 | ▼ 10 places down |
| 14 |
Boss Plumbing GeminiSiri
|
2 of 12 | 3 | new |
| 15 |
 New Generation Plumbing newgenerationplumbing.com ClaudeMicrosoft Copilot
|
2 of 12 | 3 | ▼ 2 places down |
| 16 |
The Plumber You Can Trust (TPYCT) Mistral
|
1 of 12 | 3 | new |
| 17 |
Nautilus Plumbing Microsoft CopilotGemini
|
2 of 12 | 2 | new |
| 18 |
Papa's Plumbing AlexaClaude
|
2 of 12 | 2 | new |
| 19 |
 Sal’s Plumbing salsplumbing.com ChatGPTMicrosoft Copilot
|
2 of 12 | 2 | ▼ 1 places down |
| 20 |
All Service Plumbing, Heating & Air Conditioning Mistral
|
1 of 12 | 2 | new |
| 21 |
 Plotke Plumbing plotkeplumbinginc.com ChatGPT
|
1 of 12 | 2 | new |
| 22 |
Ritz Plumbing Meta AI
|
1 of 12 | 2 | new |
| 23 |
SWE Sewer Solutions & Engineering Mistral
|
1 of 12 | 2 | new |
| 24 |
United Plumbing Heating Air & Electric Perplexity
|
1 of 12 | 2 | new |
Asked the ways customers actually ask
The same assistants, the same week, three phrasings of one need — ranked separately. A business that wins “best” but loses “most affordable” is losing a different customer each time.
34 sources the assistants read
Every site behind this month's answers, ranked by share of all citations, with how many assistants relied on each. Earning a mention on the pages near the top is what moves a ranking — and nothing on this page can be bought.
- 01 angi.comDirectory & reviews 8.1% 5 of 12 assistants
- 02 thumbtack.comDirectory & reviews 8.1% 3 of 12 assistants
- 03 yelp.comDirectory & reviews 6.5% 3 of 12 assistants
- 04 consumeraffairs.comDirectory & reviews 4.8% 2 of 12 assistants
- 05 airtasker.com 4.8% 1 of 12 assistants
- 06 homeadvisor.comDirectory & reviews 3.2% 2 of 12 assistants
- 07 trustanalytica.org 3.2% 2 of 12 assistants
- 08 bestprosintown.comDirectory & reviews 3.2% 2 of 12 assistants
Show 17 more sourcesShow fewer
- 09 m.yelp.comDirectory & reviews 3.2% 2 of 12 assistants
- 10 mrspeedyplumbing.com 3.2% 2 of 12 assistants
- 11 bestplumbingservicesinlosangeles.com 3.2% 2 of 12 assistants
- 12 bestinhood.com 3.2% 1 of 12 assistants
- 13 forbes.comDirectory & reviews 3.2% 1 of 12 assistants
- 14 local.yahoo.com 3.2% 1 of 12 assistants
- 15 www2.cslb.ca.govLicensing 3.2% 1 of 12 assistants
- 16 fordsplumbingandheating.comRanked #7 · Ford’s Plumbing & Heating 3.2% 1 of 12 assistants
-
17
plotkeplumbinginc.comRanked #21 · Plotke Plumbing
3.2%
1 of 12 assistants
- 18 reddit.comDirectory & reviews 3.2% 1 of 12 assistants
- 19 houzz.comDirectory & reviews 1.6% 1 of 12 assistants
- 20 serviceagent.ai 1.6% 1 of 12 assistants
-
21
pacificplumbingteam.comRanked #13 · Pacific Plumbing Team
1.6%
1 of 12 assistants
- 22 redlillyplumbing.comRanked #9 · Red Lilly Plumbing 1.6% 1 of 12 assistants
- 23 google.comDirectory & reviews 1.6% 1 of 12 assistants
- 24 bestplumbers.com 1.6% 1 of 12 assistants
- 25 mapquest.comDirectory & reviews 1.6% 1 of 12 assistants
+ 9 more sites cited less often, together 14.9% of citations.
No business can pay to be ranked · how this is measured
Is your business in this answer?
12 assistants answered “Who are the best plumbers in Los Angeles, CA?” this month and named 24 plumbers in Los Angeles, CA. Which side of that list you are on decides whether a customer asking that question ever hears your name.
On the list, and want to be higher?
Rank here is set by how many assistants repeat your name and which sources they read to decide it — the 25 sources above are the ones that shaped this answer. Our platform measures exactly that for one business: the same 12 assistants, daily instead of monthly, which of those sources you appear on and which you don't, and every fix tracked until the answer changes.
You're not on the list
Then for this question you were not in the answer at all — not ranked low, absent from the shortlist, with nothing to tell you it happened. That is the ordinary case: most plumbers in Los Angeles, CA are never named. AI Pulse shows you what each assistant says about your business and what to change so it names you.
Common questions
Who is the best plumber in Los Angeles, CA, according to AI?
As of October 1, 2026, Rooter Hero Plumbing & Air — named by 5 of 12 AI assistants, 10 times in all. Mike Diamond Services and Roto-Rooter rank next.
How many plumbers did AI assistants name in Los Angeles, CA?
67 businesses were named across 36 answers from 12 assistants, on 3 phrasings of the question. 24 of them were named often enough to rank.
How often is this ranking updated?
Every month. This edition covers October 2026; the next one publishes in November 2026. Each business's move since the last edition is shown in the "vs last month" column.
How is this ranking measured?
Fixed, unbranded consumer questions — including "Who are the best plumbers in Los Angeles, CA?" — are put to the same assistants every month. Named businesses are resolved to one entity, a name mentioned only once is dropped as unverifiable, and a cell publishes nothing until enough answers accumulate. No business can pay to appear or to rank higher.
The questions we ask
The prompt set is fixed and unbranded, so month-over-month movement means the assistants changed their answer — not that we changed the question.
- Who are the best plumbers in Los Angeles, CA?
- I need a plumber in Los Angeles, CA. Who do you recommend?
- Best affordable plumber near Los Angeles?
More Los Angeles rankings
Every category we track in Los Angeles, CA, measured the same way.
Plumbers in other cities
Move up this list
This page measures a whole market once a month, for free. Our software measures a single business across the same 12 assistants daily — which ones name you, which sources they trust to decide it, what to fix next, and whether the answer actually moved.
AI Pulse: all 12 AI assistants, every feature, cancel anytime.