Central Air Conditioning in AI Search: A GEO Analysis of 108 Questions and 1,138 Citations Across Four Platforms
When buyers ask AI about central air conditioning, the four main Chinese assistants recommend very different brands for the same category, and brand websites make up only 17.4% of cited sources. Brands need to plan by platform, category and region, and make their own sites readable for AI.
Where the data comes from
In June 2026 we asked four AI assistants, Doubao, DeepSeek, Tongyi Qwen and Tencent Yuanbao, questions about central air conditioning and related heating and ventilation categories. We recorded every page each answer cited, and the brands each answer recommended and in what order. The questions cover buying criteria, brand recommendations and brand reputation.
| Metric | Value |
|---|---|
| Questions | 108 |
| Citations | 1,138 (Doubao 368, Yuanbao 303, Qwen 256, DeepSeek 211) |
| Distinct source websites | 439 |
| Share from brand websites | 17.4% |
| Share from trade and vertical media | 21.3% |
For brand recommendations we used five category questions: premium home central air conditioning, office building air conditioning, inverter split units, home floor heating and whole-home fresh air systems. This article names no brands and looks only at industry patterns. It is a point-in-time collection, and AI answers can change each time.
Finding 1: each platform draws on different sources
| Platform | Main cited sources | Leaning |
|---|---|---|
| Doubao | Toutiao, Douyin, shopping guides and tech media | Mass consumer |
| Qwen | Tech reviews, portals and official media | Authoritative news |
| DeepSeek | HVAC trade media and brand websites | Most specialist |
| Yuanbao | Content platforms, e-commerce and brand aggregators | Content distribution |
Across all citations, the top sources were Toutiao (53), Douyin (50), one brand's central air conditioning website (37), IT Home (35) and the shopping guide SMZDM (28). An HVAC trade publication, the complaints platform Heimao Tousu and Baidu Baike also made the top 20. Notably, several local mechanical installation contractors' websites were cited repeatedly, which shows AI turns to local service providers when answering installation and pricing questions.
Almost all 37 citations of that brand website came from DeepSeek. On DeepSeek, a substantial brand website earns citations directly; on Doubao, the volume of content on Toutiao and Douyin matters more.
Finding 2: same category, very different brand lists
| Category question | Brands named across the four platforms | Brands named on all four |
|---|---|---|
| Which brand is best for premium home central air conditioning? | 12 | 2 |
| Which whole-home fresh air system brand works best? | 15 | 2 |
| Which brand for comfortable, energy-efficient home floor heating? | 28 | 1 |
The more specialized the category, the more the platforms disagree. For floor heating, the four platforms named 28 brands between them and only one appeared on all four. For office building air conditioning, three different brands ranked first across the four platforms. For inverter split units, Doubao and Qwen put mass-market Chinese brands in the top two, while DeepSeek and Yuanbao put Japanese brands there.
A single brand's position also varies by platform and category. One leading brand we track ranked first for overall visibility on Doubao, DeepSeek and Yuanbao but only third on Qwen. By category, it ranked first on two or three platforms for premium central air conditioning and floor heating, but was not in the top two on any platform for fresh air systems, and Doubao did not mention it at all. A single overall score hides these gaps.
Finding 3: if AI cannot read your site, competitors get cited
Asked about what to watch for when installing central air conditioning, DeepSeek cited 10 pages, including installation guides on two competitors' websites with specific requirements such as refrigerant and condensate pipe gradients and bracket spacing. The brand we track also has installation guidance on its website, but published as images. AI cannot extract the text, so it was never cited.
Questions about selection, installation and maintenance often produce answers with no brand names, but the sources cited still shape who users see as the expert. Turning this knowledge into clearly structured text on the brand website is one of the cheapest and most direct GEO actions available.
Finding 4: Douyin content volume shapes Doubao's recommendations
Doubao cites Douyin and Toutiao heavily. We compared the Douyin footprint of three central air conditioning brands:
| Brand | Share of posts | Share of posting accounts | Share of engagement |
|---|---|---|---|
| Brand A | 28.2% | 33.2% | 12.6% |
| Brand B | 19.1% | 19.7% | 12.8% |
| Brand C | 52.7% | 47.2% | 74.6% |
Brand C accounts for about half of the posts and three quarters of the engagement. Douyin content does not only come from official brand accounts: posts by dealers, installers and home renovation creators are also picked up by AI. Raising visibility on Doubao means getting many parties to post on Douyin consistently, not just running an official account.
Finding 5: users in different regions ask different questions
Central air conditioning depends heavily on dealers for design and installation. Brands have different levels of channel control in different cities, so buyers worry about different risks:
- Core markets such as Shanghai and Beijing: can I see it in a showroom, and is it worth paying more at an authorized store?
- Developing markets: does the authorized store use its own installation team?
- Thinly covered markets: there is no store here, so who installs a unit I buy online?
One typical complaint: a buyer purchased online and found the heating inadequate, and after-sales service blamed a mismatch with the room size. The brand in fact offers free on-site measurement in some regions, but dealers provide the service and it is not explained in public information, so AI cannot mention it either. Publishing local service points, on-site measurement and installation guarantees answers these questions directly.
GEO recommendations for central air conditioning brands
- Focus on weak platforms and categories: measure visibility per platform and per category, and put resources into the weakest combinations rather than spreading them evenly.
- Set goals by question type: for standard-defining questions (causes, selection, standards, maintenance), track whether your content is cited; for brand recommendation questions, track whether and where your brand appears; for brand verification questions (comparisons, reputation, channels), track whether the information is accurate and current.
- Turn the website into a knowledge base AI can read: write selection, installation, maintenance and warranty information as text and tables, not images; keep terms and specs consistent; and answer each question up front.
- Plan third-party content by platform: for Doubao, focus on Toutiao and Douyin and bring in dealers and installers; for DeepSeek and Qwen, focus on HVAC trade media, tech reviews and encyclopedia entries.
- Do regional GEO: prepare content for core, developing and thinly covered markets, answering local questions about showrooms, authorized installation and after-sales service where there is no store.
- Base questions on real demand: build the question list from search suggestions and cross-platform checks, rather than writing content for questions nobody asks.
For a broader method, see our GEO starter guide. To assess how your brand performs across AI platforms, see our generative engine optimization (GEO) service.
Key Data & Sources
| Data | Value | Source |
|---|---|---|
| AI citation collection on central air conditioning questions (Doubao, DeepSeek, Qwen, Yuanbao) | 108 questions, 1,138 citations, 439 source websites | Collected by Dékuple China, June 2026 |
| Share of citations from brand websites | 17.4% | Same dataset |
FAQ
Which AI platform should a central air conditioning brand prioritize?
Start with the data. Platforms cite different sources and recommend different brands, and the same brand can rank first on three platforms and third on another. Measure visibility per platform and per category, then fix the weakest combinations first.
How important is the brand website for GEO in this industry?
Very, especially on DeepSeek. In our data one brand website was cited 37 times, almost all by DeepSeek. But the content must be crawlable text: installation guides published as images are not cited.
Why does regional GEO matter?
Central air conditioning is sold and installed through local dealers, and buyers in different cities worry about different things, from whether an authorized store is worth the price to who installs where there is no store. AI can only answer accurately if these local questions are answered publicly.
Is content without the brand name still worth producing?
Yes. Answers about selection, installation and maintenance often name no brand, but the cited sources shape who users see as the expert. Measure this content by whether it is cited, not by whether the brand appears.