Welcome to Smith Heating and Cooling in London, Kentucky. We offer sales, service, maintenance and installation for both residential and commercial HVAC customers. Since 1968, we have serviced and maintained ALL BRANDS of heating and air conditioning systems and equipment for satisfied customers across Southeastern Kentucky. Give us a call for all your heat and air needs. To schedule an appointment online, please click the link below.. Heating & Air,Service/Repair – Commercial & Residential,Installations,Commercial Refrigeration – Service & Repair (ice machines,walk-in coolers).