Star count is what owners watch. Review text is what the next homeowner reads in the pack. For HVAC, a note about a frozen coil in Lakewood or a furnace in south Fort Worth is worth more than twenty “great job!” lines. Here is how reviews actually fit local SEO — without a review-gating scheme.
Prominence is partly proof you are real
Google’s local ranking includes prominence. Reviews are one visible piece. A listing with three reviews from 2021 looks quieter than a competitor with steady, ordinary reviews from this summer.
Ask after the job, not after a script
The technician just left. The AC is on. That is the window. Ask for a Google review. Mention it is fine to say what they hired you for and what part of town. Do not hand them a paragraph to copy.
Reply to the bad ones
A skipped one-star about a no-show looks worse than a calm reply. Do not fight in public. Do not offer a refund in the review thread as a ranking tactic. Be a company.
What not to do
Do not buy reviews. Do not review-gate (only happy customers sent to Google). Do not run a contest that requires a five-star. Those tactics are how listings get enforcement problems.