A 1 Certified Service

For the past 60 years, the experts at A1-Certified Service Inc in Knoxville TN have given our customers comfort and peace of mind. We began in the late 1960's when cooling your home was in its infancy. Tom Thomas opened his doors to provide comfort to the homeowners in Central Florida. In the early 1990's, Tom moved to Knoxville, TN, and we have been serving the Knoxville and surrounding communities for over 20 years. In 2012, Tom released the reigns of A-1 Certified Service, Inc. to his daughter, Michele Thomas.

Call A-1 Certified Service, Inc. for air conditioning repair and replacements, professional air duct cleaning, ventilation problems, and heat pump repair and seasonal safety inspections. We are your complete Home Air Comfort Specialists. Call the HVAC Specialists, A-1 Certified Service, Inc. today for high efficiency air conditioning installations that will keep you and your family in low cost, eco-friendly comfort all year!

Reducing the amount of air that leaks in and out of your home is a cost-effective way to cut heating and cooling costs, improve durability, increase comfort, and create a healthier indoor environment. Caulking and weatherstripping are two simple and effective air-sealing techniques that offer quick returns on investment, often one year or less. Caulk is generally used for cracks and openings between stationary house components such as around door and window frames, and weatherstripping is used to seal components that move, such as doors and operable windows.

Do you feel like your home's heating or cooling system is constantly running? Does the temperature in your house keep raising and dropping rapidly? It might be time to get some insulation work done. A-1 Certified Service, Inc. specializes in insulation to make sure your home stays comfortable and saves you money. Home insulation saves on energy costs, lowers utility bills, and can prevent air and moisture infiltration. Not only can you keep your home heating or cooling from running all the time, but you can stay at a constant comfortable temperature as well.

A-1 Certified Service, Inc. guarantees that when the equipment we have installed is maintained and operated in accordance with the manufacturer's operating and maintenance manuals, the system will perform as we have stated and agreed upon. We have promised a maintained temperature variance of no more than 3 degrees from your temperature selection to the actual temperature at your thermostat when you are heating or cooling your home under normal operating conditions. If the installation temperatures are not achieved, we will make any necessary modifications, repairs or replacements at no charge to you for a period of 1 year.