We have used Wolverine Heating & Cooling for years and years. Ever since Dan took over at least. Their techs are very friendly, and they always show up on time. In fact, they are the ones who remind us when it is time to do the twice a year routine maintenance. They do a very thorough job, and even replace the batteries and check the contacts for us! It is so nice not to have to worry about our heating and cooling unit, and Wolverine Heating & Cooling saves us from all that nuisance!