Short answer: an HVAC or plumbing website has to show on a phone, within seconds, what you do, where you work and how to reach you. Everything else comes second. On top of that come a few rules you should check for your state or country – for example on reviews, privacy and accessibility.
This guide focuses on HVAC and plumbing businesses and the phone call as the goal. For a general test of any trades website, see the contractor website checklist; for the call button itself, how to add a tap-to-call button.
Why the phone view comes first
Google uses the mobile version of a site's content for indexing and ranking; only the content shown on the mobile site is used for indexing. [1] What's missing on the phone is missing for Google too. Check your own site on a smartphone: is the phone number visible without scrolling, and can you tap it?
What belongs at the top of the home page
Someone with a burst pipe or no heat doesn't read your company history. Put these first:
- Call button: your number as a tappable
tel:link, easy to reach on mobile. - Emergency hours: when someone answers, and how emergency calls are charged. Only list hours you can keep.
- Service area: towns or neighborhoods as text, matching your Google Business Profile.
- Services in customer language: furnace repair, AC installation, heat pumps, water heaters, drain cleaning, maintenance plans.
Service area instead of copy-paste city pages
Name the towns you actually serve. If regular appointments, maintenance and emergency calls cover different areas, say so.
Example wording – only use it if it's true: “Furnace and AC repair in Arlington, Alexandria and Falls Church. Other areas by arrangement. No 24-hour emergency service.”
- Match your business address, phone number and hours across your website, Google Business Profile and directories.
- Explain trip charges or after-hours fees before the customer books; don't promise arrival times you can't keep.
- Create separate city pages only if each one adds something real – services actually offered there, approved project examples. Not the same text with the town name swapped.
Content that builds trust
Photos of real jobs show what customers can expect. Publish photos from customers' homes only with permission and with no names or addresses visible.
If you show reviews on your site, show genuine ones and don't present a hand-picked selection as if it were all of them. In the US, the FTC's rule on consumer reviews covers fake reviews and review suppression. [2]
Licensing: many states, provinces and local authorities have rules for contractor licenses and what has to appear in advertising. Check with your licensing board what applies to you, and show license numbers where required.
Privacy and accessibility
If your contact form collects names, phone numbers or addresses, publish a privacy policy that explains what you collect, why and who processes it – including embedded services such as maps, chat widgets or analytics. Which privacy laws apply depends on where you and your customers are; ask an advisor if you are unsure.
In the US, the Department of Justice takes the position that the ADA's requirements for businesses open to the public apply to what they offer on the web. DOJ has no regulation with detailed technical standards for these businesses, and points to WCAG and the Section 508 Standards as helpful guidance. [3] Regardless of legal requirements, good contrast, labeled form fields and image alt text help every visitor.
What structured data does
Structured data describes your business in a machine-readable way (see Schema.org). Google recommends using the most specific LocalBusiness subtype [4]; for these trades, schema.org offers Plumber and HVACBusiness. [6][7] Mark up only what visitors can see on the page. [5] Google doesn't guarantee that features using structured data will appear. [4]
Can AI search tools find your business?
It's possible, but there's no guarantee. Google says there are no additional technical requirements for its AI Overviews. [8] OpenAI's OAI-SearchBot and Perplexity's PerplexityBot need to be allowed in robots.txt for your site to appear in their search results. [9][10] Check whether your robots.txt blocks them. A technical check alone doesn't prove you'll be named in AI answers.
What you can skip
- Image sliders that rotate on their own
- Stock photos of smiling technicians
- A blog you don't have time to keep up
- Offers that promise “#1 on Google”
Checklist
| Area | Question |
|---|---|
| Mobile | Phone number visible without scrolling and tappable? |
| Emergency | Hours realistic and clearly worded? |
| Service area | Towns named as text, matching the Google profile? |
| Services | Named in customer language? |
| Photos | Your own work, with customer permission? |
| Reviews | Genuine, not a hand-picked selection shown as complete? |
| License | Required license details shown? |
| Privacy | Forms and embedded services covered in the privacy policy? |
| Accessibility | Labels, contrast and alt text checked? |
| Technology | Plumber or HVACBusiness markup matches the page? robots.txt checked? |
Frequently asked questions
Does a small plumbing company's website have to be accessible?
In the US, DOJ's position is that the ADA applies to the web offerings of businesses open to the public, without a detailed technical standard for them. Following WCAG is the common reference point. Get advice for your specific case.
Do I need separate pages for every town?
Only if each page offers something real for that town. Copied pages with the town name swapped help neither customers nor search engines.
How do I get into ChatGPT answers?
There's no guarantee. Allow OAI-SearchBot in robots.txt and keep your business details current everywhere.
Your next step
Get a written second opinion on your site with the free website audit. If your site is outdated, the Pakun Website builds five fast, mobile-first pages with the copy written for you, and you see a preview before anything goes live.
General information, not legal advice. Google, Microsoft, OpenAI and Perplexity change their products and help pages; the linked sources in their current version take precedence.
Sources
- Google Search Central, “Mobile site and mobile-first indexing best practices.” https://developers.google.com/search/docs/crawling-indexing/mobile/mobile-sites-mobile-first-indexing — Accessed November 3, 2026.
- Federal Trade Commission, “Trade Regulation Rule on the Use of Consumer Reviews and Testimonials,” 16 CFR Part 465, Federal Register Vol. 89, No. 163 (August 22, 2024), effective October 21, 2024. https://www.govinfo.gov/content/pkg/FR-2024-08-22/html/2024-18519.htm — Accessed November 3, 2026.
- U.S. Department of Justice, “Guidance on Web Accessibility and the ADA,” March 18, 2022. https://www.ada.gov/resources/web-guidance/ — Accessed November 3, 2026.
- Google Search Central, “Local business (LocalBusiness) structured data.” https://developers.google.com/search/docs/appearance/structured-data/local-business — Accessed November 3, 2026.
- Google Search Central, “General structured data guidelines.” https://developers.google.com/search/docs/appearance/structured-data/sd-policies — Accessed November 3, 2026.
- Schema.org, “Plumber.” https://schema.org/Plumber — Accessed November 3, 2026.
- Schema.org, “HVACBusiness.” https://schema.org/HVACBusiness — Accessed November 3, 2026.
- Google Search Central, “AI features and your website.” https://developers.google.com/search/docs/appearance/ai-features — Accessed November 3, 2026.
- OpenAI, “Overview of OpenAI Crawlers.” https://developers.openai.com/api/docs/bots — Accessed November 3, 2026.
- Perplexity, “Perplexity Crawlers.” https://docs.perplexity.ai/docs/resources/perplexity-crawlers — Accessed November 3, 2026.