This is the single most useful thing to understand about local search in a city this size, and it is where most Houston SEO money gets wasted. Houston covers more than 600 square miles. When someone searches "AC repair near me" from Sugar Land, Google is not looking for the best AC company in Houston. It is looking for good options near Sugar Land. Ranking "in Houston" is not a real thing. You rank in a radius around where Google believes you are.
That reframes the whole job. Chasing "HVAC Houston" is expensive and largely pointless for a small operator. Being the obvious answer in Katy, Cypress, or Pearland is achievable, and those customers spend the same money. So the work is: be unmistakably clear about where you operate, have real pages for the areas you serve, and make your Google Business Profile precise about your service area.
Google weighs three things for local results — relevance, distance, and prominence. Distance you cannot change. Relevance and prominence you can, and most small Houston businesses are leaving obvious points on the table: a profile with the wrong primary category, no service list, no photos in two years, hours that go stale over holidays, and a website that never actually names the suburbs it covers. Those are unglamorous fixes and they are usually the ones that move the needle.
A caution about the map pack, because it is where the calls are. Getting into the top three for a competitive Houston category takes reviews and consistency over months, not a one-time cleanup. Anyone promising the 3-pack in 30 days is either lucky or lying. What a foundational project reliably does is remove the things actively holding you back — and for a lot of businesses that alone is a visible change within a couple of months.