| Company | Share of responses | Answer Share | Citation Share |
|---|---|---|---|
| Evergreen Home Heating and Energy | 59.4% | 1.6% | |
| Green Heating, Cooling & Electric | 58.0% | 0.4% | |
| Glenn Baker’s Heating & Air Conditioning | 46.4% | n/d | |
| Seattle Heating & Cooling | 29.0% | n/d | |
| Arista Air Conditioning & Heating: | 15.9% | n/d | |
| H & H Heating | 14.5% | n/d | |
| Thunderbird HVAC | 13.8% | 0.4% | |
| Quinnair Heating & Air Conditioning | 10.9% | n/d | |
| GreenTop Heating | 10.1% | 0.0% | |
| AAA Northgate Heating & Air Conditioning | 10.1% | n/d | |
| JW Plumbing, Heating and Air | 8.7% | n/d | |
| Norell Heating & Air Conditioning | 8.0% | 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.