Build an FAQ schema block for a service page

A local HVAC company's service page for "[AC repair in Phoenix, AZ]" has a visible
FAQ section with 6 questions answered in plain text on the page (paste below), and
wants FAQPage schema added so the questions might show as an expandable rich result.

PAGE URL: [yourdomain.com/services/ac-repair-phoenix/]
VISIBLE FAQ CONTENT ON THE PAGE (paste the actual questions and answers as they
appear): [paste here]

Build this the way someone aware Google restricted FAQ rich results mostly to
authoritative government/health sites in 2023 would, so expectations are set
correctly:
1. Confirm the 6 questions and answers are word-for-word what's visible on the page,
   since FAQPage schema must mirror visible content exactly, don't paraphrase or
   expand the answers in the schema beyond what a visitor actually sees.
2. Note plainly, before writing any code, that Google narrowed FAQ rich result
   eligibility significantly and now shows it mainly for well-known, authoritative
   sites, so a local business page having valid FAQPage schema doesn't mean the
   visual snippet will actually appear, set that expectation instead of implying
   schema alone guarantees it.
3. Write the JSON-LD using the exact visible text for each mainEntity Question and
   acceptedAnswer.
4. If any of the 6 answers reference something not stated in the question itself
   (e.g. an answer says "yes, we offer that" without the question specifying what
   "that" is), flag it, since ambiguous answers read fine to a page visitor with
   context but can look broken in a decontextualized snippet.
5. Note that even without the visual rich result, this schema still has value for
   AI-driven search summaries and voice assistants pulling structured Q&A content,
   so it's not wasted effort even if the SERP snippet itself doesn't appear.