We asked Copilot and ChatGPT for an Upper West Side plumber. They didn't name a single plumber in common.
In 30 seconds
- ChatGPT named Simply NYC Plumbing and Rooter in 9 of 10 answers. Copilot never named it.
- Asked about 72nd Street, Copilot sent the customer to East 72nd, across the park.
- ChatGPT showed a paid ad in 4 of 10 answers.
2AI assistants
20answers
31plumbers named by Copilot
18plumbers named by ChatGPT
What we found
In the AIs’ own words, from answers we got on October 22, 2026 (shortened).
“72nd Street” ended up on the wrong side of the park
Plumber near 72nd Street in Manhattan for a clogged drain
Copilot
#1: Rite Plumbing & Heating, 750 Lexington Ave, on the East Side.
vs
ChatGPT
#1: Simply NYC Plumbing and Rooter.
The Upper West Side is west of Central Park. Lexington Avenue is east of it.
“Affordable” went to whoever said it
Affordable plumber on the Upper West Side of Manhattan
Copilot
Bargain Plumbing and Heating: the “Bargain” name “suggests budget-friendly.”
vs
ChatGPT
#1: Glenn’s Plumbing Services, which advertises a $25–$50 new-customer discount.
Neither answer compared real prices.
Name the repair on your site, win the question
Who can fix a leaking radiator or steam pipe on the Upper West Side?
Copilot
#1: Rite Plumbing & Heating. “Explicitly repairs radiator leaks, steam leaks, and valve issues.”
Copilot picked the plumber whose own site names that exact repair.
Co-op renovation: two lists, zero overlap
Licensed plumber for a co-op bathroom renovation on the Upper West Side
Copilot
#1: Wynne Plumbing & Heating.
vs
ChatGPT
#1: Amanda Plumbing.
Copilot’s picks spelled out co-op and insurance details on their own sites. No company appeared on both lists.
Who each AI picked first
One dot per answer. Same color across a row means the assistants agreed.
| Copilot | ChatGPT | |
|---|---|---|
| Best plumber on the UWS | ||
| Emergency plumber, open 24 hours | ||
| Near 72nd St, clogged drain | ||
| How much does a plumber charge? | ||
| Co-op bathroom renovation | ||
| Water heater repair or replacement | ||
| Good reviews near Columbia | ||
| Leaking radiator or steam pipe | ||
| Same-day near Lincoln Center | ||
| Affordable plumber on the UWS |
Simply NYC Plumbing and RooterRite Plumbing & HeatingOtherNone named
See every #1 pick by name
| Question | Copilot | ChatGPT |
|---|---|---|
| Best plumber on the UWS | Sam's Plumbing Services | Mac Felder Plumbing |
| Emergency plumber, open 24 hours | Pemati Plumbing Services | Simply NYC Plumbing and Rooter |
| Near 72nd St, clogged drain | Rite Plumbing & Heating | Simply NYC Plumbing and Rooter |
| How much does a plumber charge? | none named | Simply NYC Plumbing and Rooter |
| Co-op bathroom renovation | Wynne Plumbing & Heating | Amanda Plumbing |
| Water heater repair or replacement | IPS Plumbing Corp | Tecumseh Plumbing and Heating |
| Good reviews near Columbia | Lopez Plumbing & Heating | Osborn Brothers Plumbing |
| Leaking radiator or steam pipe | Rite Plumbing & Heating | Gateway Plumbing & Heating |
| Same-day near Lincoln Center | Plumbing NYC | Simply NYC Plumbing and Rooter |
| Affordable plumber on the UWS | Hub Plumbing & Mechanical | Glenn's Plumbing Services |
What an Upper West Side plumber can do this month
- Give each service its own page (steam and radiators, water heaters, drains, co-op renovations) and name the neighborhood on it.
- Publish a starting price or an offer. Price and "affordable" questions go to whoever does.
- If you take emergency calls, make your listing hours say so (24 hours means 24 hours everywhere).
- State co-op paperwork plainly: license, insurance limits, COI turnaround.
- Check every assistant. Being strong on one says nothing about the others.
Is your business in the answer?
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