National Heating and Cooling is a family owned and operated business that has been serving the Loudon, Lenoir City, and Knoxville areas for over 20 years. We are dedicated to providing the best service possible to our customers. We are a full service HVAC company that specializes in furnace repair, AC installations, and heat pump installations. We also provide vent duct services. We are available 7 days a week and offer emergency services. We are fully licensed and insured. We are committed to providing the best service possible to our customers.