Wolverine Heating & Cooling's service is unbelievable. I was without heat in the middle of the night on a weekend and they were there like within forty-five minutes. I just recently had Wolverine Heating & Cooling put a furnace in for me, which turned out perfect. I got quotes from a lot of people, and while Wolverine was not the cheapest, their service is the best, it's excellent. Nobody else wants to give you the time of day.