Why 87% of Independent HVAC and Plumbing Contractors Have Zero AI Citations

Our June 12, 2026 investigation of AI citation share in home services found that 87% of independent HVAC and plumbing contractors in the United States have zero measurable AI citation share across major platforms. The US market has approximately 230,000 independent contractors across those two trades. The overwhelming majority of them are completely absent from AI recommendations — and most have no idea.

That number isn't a call to panic. It's a clarifying data point. It tells you who contractors are actually competing against, and why the standard advice about review volume and website quality is largely addressing the wrong problem.

Review count doesn't explain AI citation share

The most consistent finding from our June 12, 2026 home services citation investigation was one of the more counterintuitive ones: contractors with 800+ verified Google reviews showed the same AI citation rate as contractors with fewer than 50.

Reviews carry real weight in Google Maps and traditional local rankings. They carry almost no independent weight in AI recommendation decisions. The platforms that determine whether your business gets recommended — ChatGPT, Perplexity, Gemini, Claude — don't retrieve your Google review count and convert it to trust. They look for entity signals: is this business confirmed across multiple third-party sources as a verified, operating entity with a stable identity?

A contractor with 850 reviews and a single-source online presence is less citable, in this framework, than one with 30 reviews and consistent verified listings across Google Business Profile, Bing Places, BBB, and two trade-specific directories. The signal that moves AI citations is entity confirmation, not social proof volume. For contractors who spent years building a review base expecting it to drive all digital visibility, this requires a different mental model.

Who is actually getting cited — and why

Our June 12 investigation found that national chains capture a disproportionate share of AI citations in the HVAC and plumbing category. Roto-Rooter, ARS Rescue Rooter, and similar brands represent roughly 19% of total citation share in their respective trades, despite being a small fraction of total market operators.

The more unexpected finding: ServiceTitan — a field service management software company — ranked among the highest-cited entities in HVAC-related AI queries. ServiceTitan does not do HVAC work. It sells software to HVAC businesses. Its ranking comes from IPO press coverage that generated significant third-party publication volume in trade and business media. That earned media is exactly what AI platforms cite.

This surfaces the mechanism that explains both national chain dominance and the independent contractor gap. Our June 12, 2026 investigation of citation acceleration for new and thin-footprint businesses pulled two large studies — Muck Rack's analysis of over 1 million AI prompts and 5W PR's citation source research (both May 2026) — finding that 84-85.5% of AI citations reference earned media: third-party publications, directories, forums, press coverage. Not brand-owned websites.

ServiceTitan got cited in HVAC queries because journalists covered its IPO. National chains get cited because trade publications cover their service expansions and corporate announcements. Independent contractors, who rarely appear in trade press, are missing 85% of the citation source pool before the first line of their website is evaluated.

The demand signal most contractors are ignoring

Our June 12 home services investigation found that 17.7% of home service searches trigger AI Overview responses in Google. That's the demand side of this gap: more than one in six home service queries is now AI-mediated, and that share is growing as Google's Gemini features expand further into local search.

Combined with the 87% zero-citation rate, that figure defines a concrete opportunity. Someone is appearing in those AI Overviews, and it is not most of the market. Local contractors willing to build entity infrastructure correctly have limited competition in the citation pool right now.

For additional context on how thin that pool is: the same investigation found that only 1.2% of local business location-level entities have a measurable ChatGPT citation rate for direct category queries. The citation pool for local service businesses is not saturated. It is nearly empty. That changes over time as awareness catches up — but the window to establish position before the pool fills is open right now.

The Phase 1 problem in trades

Our June 10, 2026 methodology recommendation on fix-plan phase stratification defines the entry problem plainly: "Before optimizing your content, AI needs to know you exist."

Phase 1 in the framework we now apply to every audit is entity establishment. Google Business Profile verified and complete, with service categories and service area fully populated. Bing Places claimed. BBB listing present. One or two trade-specific directories — HomeStars and Angi for home services broadly, HRAI for HVAC specifically. Schema with sameAs links connecting the site to those verified external profiles.

None of that is about content quality. None of it is about reviews. It is about building a consistent external footprint that AI platforms can triangulate to confirm the entity exists. The June 10 methodology rec classified the threshold directly: zero citations across all platforms means Phase 1 is incomplete, regardless of how technically sound the website is.

For the 87% of independent contractors at zero citation share, that classification has one implication: entity infrastructure hasn't been established yet. Content work, schema refinement, and freshness optimization are all premature until the external footprint exists.

What the accessible fix looks like

Our June 12 citation acceleration research documented the multiplier effects of multi-platform presence specifically. Businesses present on four or more third-party platforms are 2.8x more likely to appear in ChatGPT responses than those present on one. Distributing content across multiple publications — not just publishing on the brand site — increases AI citations by 325%.

For a trades business, multi-platform distribution doesn't require a PR budget. It means answering questions on trade forums, submitting project photos to Houzz, contributing one useful post to a community site, getting listed on industry-specific directories with a complete profile. Each of those creates a third-party citation surface. The earned media pool rewards breadth, and for an independent HVAC or plumbing contractor, the bar to build meaningful breadth is lower than it looks.

The review-count focus isn't wrong as a business strategy. It reflects accurately how local SEO has worked for a decade. But AI recommendation systems run on different signals, and chasing Google review velocity as an AI visibility play produces exactly the pattern the data shows: strong reputations, zero citations.

A Signal Check at sourcepull.ca shows your current citation score across ChatGPT, Perplexity, Gemini, and Claude. If you're at zero on all four, entity infrastructure is the first task — not content, not schema, and not more reviews.