Whether your heating or cooling system needs routine maintenance or needs to be repaired, our NATE-certified technicians are ready to solve any problem. NATE technicians know heating and cooling—rigorous testing validates and verifies that knowledge. So you know you're getting a technician you can trust. Expert Heating & Cooling is a leading “Carrier Factory Authorized Dealer" in lower Southeast Michigan. What does this mean to you? Click below for more detailed information.