AI visibility reading
What AI assistants tell Diamond Bar homeowners who need plumbing work
On August 8, 2026 we asked ChatGPT, Perplexity and Gemini the same 12 questions a Diamond Bar homeowner types when they need plumbing work, once each. That produced 36 answers. This is what came back.
A single reading, not an average. Assistants word things differently run to run, so treat this as one honest snapshot of August 8, 2026, not a permanent ranking.
The 12 questions
Asked word for word, with no business name in any of them.
- best plumber in Diamond Bar
- who are the best plumbers near Diamond Bar
- emergency plumber Diamond Bar open now
- burst pipe who to call Diamond Bar
- no hot water emergency plumber Diamond Bar
- how much does a water heater replacement cost in Diamond Bar
- average cost to repipe a house in the Inland Empire and who to get quotes from
- plumber near me Diamond Bar
- is there a plumber near me open on Sunday in Diamond Bar
- licensed plumber near me in Diamond Bar
- my water heater is leaking, who should I call in Diamond Bar
- how do I find a plumber in Diamond Bar who won't rip me off
Who the assistants named
Companies named in at least a third of the 12 questions, most-named first.
- Roto-Rooter Named in 10 of 12 questions, by 2 of 3 assistants
- Alpine Plumbing, Heating, and Air Named in 7 of 12 questions, by 2 of 3 assistants
- All City Plumbing, Air & Electrical Named in 6 of 12 questions, by 2 of 3 assistants
- Top Notch Plumbing Inc. Named in 5 of 12 questions, by 2 of 3 assistants
Of the 8 companies we found ranking in this market, 4 were named in fewer than a third of the questions. Names are not listed here. If that is your company, the invitation below is for you.
What the assistants were reading
Domains cited most often, counted by how many of the 12 questions cited them at least once. A domain cited three times inside one answer is one question, not three.
| Source | Questions citing it |
|---|---|
| diamondbarplumbingco.com | 11 of 12 |
| alpineplumbingandair.com | 10 of 12 |
| angi.com | 10 of 12 |
| rotorooter.com | 10 of 12 |
| allcityplumbing4u.com | 9 of 12 |
| anthonyplumber.com | 9 of 12 |
| pomonavalleyplumbinghvac.com | 9 of 12 |
| yelp.com | 8 of 12 |
| proplumberdiamondbar.com | 7 of 12 |
| rooterhero.com | 7 of 12 |
| youngsplumbingandrooter.com | 7 of 12 |
| mapquest.com | 6 of 12 |
115 distinct domains were cited across the 36 answers. 40 of them were cited under more than one question.
Not named here?
That does not mean assistants have nothing to say about you. Usually it means we have not looked yet. Ask for a reading of your own business and we will run these same 12 questions and send you exactly what comes back, including the answers that do not flatter us.
guidepost reads public AI answers, the ones any homeowner already sees. It does not connect to your accounts, your website, or your software. See every market we have read.