On August 26, 2026, Kodec ran the exact question a San Antonio homeowner asks when the AC dies — "I need a good HVAC company in San Antonio TX for an AC repair. Who do people actually recommend, and what should I look for to pick a good one?" — through ChatGPT and Google AI Mode, and published what came back. If you own an HVAC company here, this is the list you aren't in yet.
One Name. That's the Overlap.
Across the 17+ companies ChatGPT surfaced and the five Google AI Mode led with, exactly one name appears in both answers: Rosenberg Plumbing & Air. ChatGPT's most prominent picks were Honeycomb Air Heating & Cooling, Jon Wayne Service Company, Daley Air, Goettl Air Conditioning and Plumbing, and Rosenberg Plumbing & Air. Google AI Mode's were Shafer Services Plus, Zimmermann Air Conditioning & Heating, Champion AC, Rosenberg Plumbing & Air, and My Father's AC & Heating. Everything else — Air Texas, Pepcal Heating & Air Conditioning, Cowboys Air Conditioning & Heating, Elmer’s, Airtegrity Comfort Solutions, Apollo Air Heating & Cooling, A&A Plumbing, Air Pros of S.A., Wilks Air Conditioning, Mr. Wilson Heating & Air, Above All Air, and the rest of ChatGPT's list — appears on one side only.
What the AI Actually Read
ChatGPT built its answer from ranking aggregators (expertise.com, hvacservice.io, reviews.birdeye.com, bestprosintown.com), a national marketplace (homeadvisor.com), local media (mysanantonio.com), Reddit (reddit.com), and one competitor's own blog: honeycombair.com. That last one matters. The page that "named" Honeycomb Air Heating & Cooling the top pick is Honeycomb's own 2026 rankings post. The AI is repeating a self-serving ranking as if it were independent. Google AI Mode read a completely different layer: 22 sources, nearly all google.com/searchviewer pages pulling Google Business Profile data. No ranking sites. No Reddit. No marketplace. Just Google's own map data and local listings.
Local Journalism Is In One Answer, Missing From the Other
There is no single "local evidence" layer the AI reads. ChatGPT cited mysanantonio.com's Best Heating & A/C Services roundup — that's local journalism, present and cited. Google AI Mode's source set contains no San Antonio publication at all; it leaned entirely on its own Business Profile listings. Same city, same question, two different versions of what counts as local.
How the AI Builds the List
Neither engine sent a technician to check a truck or grade a workmanship guarantee. The AI reads what other sites say about a company and repeats names that are cited often enough to feel safe. Your citation footprint — how consistently your exact business name, TDLR license, service area, and review volume appear across the sources above — is the raw material the answer is built from.
What This Means for a San Antonio HVAC Owner
The homeowner's research window ends inside an AI answer. If your name isn't in it, the call doesn't go to you — the conversation already happened between the homeowner and the AI, and you weren't a party to it. You don't lose on price or quality; you lose on absence.
Measured Outcome: What Fixing the Sources Does
Here's what happened to a Bay Area HVAC contractor's site we tracked after making its business identity consistent — fixing navigation, adding area pages, and reinforcing the same name/address/services across the sources an AI cross-checks. Daily impressions went from roughly 206 to 2,038 (+421%). AI-referred engagement ran at about 50% vs 24.1% for non-AI traffic — a 2.08× lift — within a small 30-day sample (4 AI sessions vs 399 non-AI). The mechanism wasn't link-buying or a content blitz. It was giving the AI a consistent, citable identity to quote.
of consumers now use AI to find local services — up from ~6% a year earlier
BrightLocal 2026 Consumer Review
of local businesses are named by ChatGPT in local-service answers
SOCi 2026 Local Visibility Index
of independent HVAC/plumbing contractors have effectively zero AI citation share in their own metro
5W HVAC & Plumbing AI Visibility Index 2026