| Company | Share of responses | Answer Share | Citation Share |
|---|---|---|---|
| Boston Standard Plumbing, Heating & Cooling | 39.1% | 1.0% | |
| Deljo Heating, Cooling & Plumbing | 32.8% | n/d | |
| Ethridge Heating and Air | 20.3% | 0.1% | |
| Browns Heating & Cooling | 18.8% | n/d | |
| Guin Service | 18.8% | 0.8% | |
| Grissom Brother Service Company | 15.6% | 0.1% | |
| One Hour Air Conditioning & Heating of Houston | 14.1% | 0.3% | |
| City Air Experts | 14.1% | n/d | |
| Aire Serv of Birmingham | 12.5% | n/d | |
| Day & Night Air Conditioning, Heating and Plumbing | 10.9% | n/d | |
| Perfect Service Heating & Air | 10.9% | 0.4% | |
| Freedom Heating & Cooling | 10.9% | n/d |
Every week, the same frozen set of 4 question phrasings is sent to OpenAI, Anthropic, Google Gemini, and Perplexity — through each provider’s official API, with active web search, never through a consumer chat interface.
Same market, same questions, repeated on a fixed schedule — not a single sample. No AI model is paid or influenced; this page reports what each one already says.
Answer Share — the share of measured responses that name a given company. 55.6% means the company appeared in 55.6% of the responses collected for this market.
Market concentration — the share of responses naming at least one of the top 3 companies: how fragmented or concentrated the answers are for this market.
Citation Share — the share of citations linking directly to a company’s own website, among companies whose domain we’ve matched. Shown as n/d where we haven’t matched a domain, or 0% where the domain is known but never cited directly — AI models often cite a review aggregator instead of the company’s own site.
The date at the top of this page is when this market was last measured. Numbers refresh weekly.