Five awards, each decided by the record: 7,789 Google reviews read, state licenses checked with Michigan LARA, and the same formula for all 47 companies. Only companies with an active state license are eligible. Nobody can buy one. Based on data as of October 27, 2026.
Highest Referrally Score
Waterford Township · ranked #1 of 47
See Kotz Heating, Cooling and Plumbing on the list · Award badge
Most reviews that say they'd recommend
Waterford Township · ranked #5 of 47
Best reply rate and speed
Auburn Hills · ranked #10 of 47
Most new reviews in 12 months
Waterford Township · ranked #1 of 47
See Kotz Heating, Cooling and Plumbing on the list · Award badge
Longest-held state license
Auburn Hills · ranked #44 of 47
How winners are chosen: HVAC companie of the Year is the highest Referrally Score. Most Recommended counts reviews that say they'd recommend the company. Most Responsive uses reply rate and speed. Fastest Growing counts new reviews in the last 12 months. Longest Standing uses the state license issue date. Companies need at least 15 reviews for the last four. Read how we rank.