The short answer
When someone asks ChatGPT, Perplexity, or Google's AI features for a plumber, the answer is assembled from sources the assistant can read and trust: your website, your Business Profile, review sites, and mentions elsewhere on the web. Getting a plumbing company into those answers means keeping each of those sources open to crawlers, accurate, and consistent with the others.
Each assistant draws on a different pipeline
Google's AI Overviews and AI Mode run on the normal Search index. Google states there are "no additional requirements to appear in AI Overviews or AI Mode, nor other special optimizations necessary" and "no special schema.org structured data that you need to add". A plumbing page qualifies the way any page does, by being indexed and eligible to show a snippet.
ChatGPT search and Perplexity work through their own crawlers, which is why a plumber can look fine in Google and still be missing elsewhere. Our plumbing SEO page covers the Google side. This page covers the assistants.
Check what your robots.txt tells each crawler
OpenAI runs two bots with different jobs. Its documentation says "Sites that are opted out of OAI-SearchBot will not be shown in ChatGPT search answers," while GPTBot crawls content that may be used for model training. They are controlled separately, so a plumber can stay visible in ChatGPT search and still opt out of training if that is the owner's choice.
Perplexity describes PerplexityBot as "designed to surface and link websites in search results on Perplexity," and says it "is not used to crawl content for AI foundation models." Blocking PerplexityBot restricts Perplexity's automatic crawling and can reduce how discoverable the site is in Perplexity search. User-requested fetches come from a separate agent, Perplexity-User, which Perplexity says "generally ignores robots.txt rules". Google-Extended is a different control again; per Google's crawler documentation, it "does not impact a site's inclusion in Google Search nor is it used as a ranking signal in Google Search."
Some sites block all of these through a security plugin or a copied robots.txt file. The free audit reads your robots.txt rules for AI crawlers. The AI crawlers explainer for contractors walks through each bot, and the ChatGPT visibility deliverable describes the setup work.
Make every listing say the same thing
Two phone numbers or three spellings of a company name can leave an assistant unsure which listing is yours. For a plumber, the details that must match are the legal or trade name, address or service area, phone, hours, and the list of services. Check the website footer, the Business Profile, the directories, and any lead-marketplace profiles.
Plumbers who travel to customers and hide a home address have an extra step, because the profile must be set up as a service-area business. The NAP consistency entry defines the term, the citation cleanup deliverable fixes mismatches, and the entity building work adds credible mentions elsewhere.
Answer the question a worried homeowner types
People ask assistants full questions: why is my water heater making a popping sound, what does it cost to clear a main line, should I replace or repair a leaking pipe. Pages that answer in the first paragraph and then explain are easier for a person to scan, and they give a crawler clean text to read. Our answer-first content and FAQ libraries cover how we plan and write them.
Reviews are part of what can be read. A review that names the job, such as a water heater swap or a cleared main line, adds specific language about your work to the pages an assistant can read. See how ChatGPT chooses local businesses and how Google's AI Overviews pick them for the sourced detail.
What the research does and does not say
Per BrightLocal's 2026 consumer survey, use of ChatGPT and other generative AI tools for local recommendations is "rising from 6% last year to 45%". That is real adoption, though not a replacement for the map results yet.
The SOCi Local Visibility Index for 2026 found that "ChatGPT recommends 1.2% of brand locations, compared to an average 35.9% appearance rate" in Google's local 3-Pack. That covers multi-location brand locations, not independent plumbers, so treat it as a sign that the map results still matter, not as a measure of your own odds. Per Gartner's February 2024 press release, traditional search engine volume was predicted to drop 25% by 2026. It is a prediction, not a measured result.
Tracking whether assistants mention you
We set up AI mention and citation-rate tracking so a plumbing company can see when assistants name it and which sources they cite. The citation tracking deliverable explains the method. Start with the free 100-point audit, which scores AI Overviews and AI assistants along with the map results. The overview of plumbing marketing shows where this work fits.
Questions about AI search for plumbing companies
Do I need special markup to appear in ChatGPT or Google AI answers?
- No special markup is required for Google, which says there is no special schema.org structured data you need to add. Structured data still helps state your services, hours, and service area clearly. What matters most is that crawlers can reach your pages and that your details agree everywhere.
What should my water heater page say so an assistant can use it?
- Open with the direct answer to the question a homeowner types, such as whether to repair or replace a tank that is failing, then cover the signs, the options you install, and how a visit works. Add your service area and a phone number. Clear text helps a crawler read the page, though no format guarantees a mention.
Can I pay to be recommended by an AI assistant?
- Not through any program we know of, and we do not sell that. The reliable work is open crawling, consistent listings, strong reviews, and pages that answer real questions. We measure whether assistants mention you and report it plainly, including when they do not.