| Company | Share of responses | Answer Share | Citation Share |
|---|---|---|---|
| All Temp Chicagoland Heating & Air Conditioning | 52.9% | 0.4% | |
| Deljo Heating, Cooling & Plumbing | 50.0% | 1.8% | |
| Oasis Heating and Cooling | 42.8% | 0.3% | |
| Browns Heating & Cooling | 38.4% | 0.2% | |
| Global Heating & Cooling | 31.2% | n/d | |
| Guardian Heating & Cooling | 29.7% | 0.4% | |
| LC Heating, LA Air Conditioning, and Air Dept | 20.3% | n/d | |
| Four Seasons Heating & Cooling | 13.0% | 3.2% | |
| Four Seasons Heating, Air Conditioning, Plumbing, & Electric | 10.9% | n/d | |
| Chicago HVAC Repair Doctor | 10.1% | n/d | |
| Chicago Heating & Cooling | 10.1% | n/d | |
| Arista Air Conditioning & Heating: | 9.4% | 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.