About A-1 CERTIFIED SERVICE INC
A-1 Certified Service Inc is a family-owned and operated HVAC contractor based in Knoxville, TN, providing quality heating, air conditioning, and home performance services for over 25 years.
Air conditioning repair and installationHeating repair and installationHome performance servicesHVAC maintenance plansSales of HVAC units including Daikin, Hisense, and Concord models
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Data compiled from public government sources including SAM.gov, USAspending.gov, and state procurement records. Last verified against federal award records. Inaccurate, or want this page removed? Request a correction or removal.