MI Service. Cool has been providing quality heating and cooling services to the community since 2019, and our team of experienced technicians has over 20 years of experience serving Northern Michigan. Our team is dedicated to ensuring your home or business stays comfortable year-round. We offer various HVAC services, including installation, maintenance, heating and air tune-up, heating and cooling repair, and geothermal heating and cooling for residential and commercial properties. Call us today for a free quote.