A-1 Certified Service, Inc.

A-1 Certified Service, Inc. has maintained its presence in Knoxville since Tom Thomas relocated the company from Florida in the early 1990s, building on a foundation established in the late 1960s. The family-owned operation transitioned to his daughter Michele Thomas in 2012, continuing its focus on residential and light commercial clients across the Knoxville metropolitan area. With 284 customer reviews generating a 4.7-star average, the company has earned consistent recognition for responsive service and technical expertise, operating Monday through Friday from 8 AM to 4:30 PM.

As a Daikin dealer, A-1 Certified Service offers access to advanced variable-speed heat pump systems including the Daikin VRV and Daikin Fit product lines, items not readily available through all regional contractors. The company actively promotes TVA EnergyRight rebates reaching up to $800 on qualifying installations, plus manufacturer rebates up to $1300 on select Daikin systems. This dual rebate structure, combined with financing options subject to credit approval, creates meaningful cost reduction opportunities for homeowners pursuing equipment upgrades.

Customer reviews specifically name technicians who arriveprepared for challenging scenarios. Zach resolved a UV light and ballast failure for customer Frank Gricus on the same afternoon it was reported, installing a protective inline fuse to prevent future system-wide outages. Technician Jimmy consistently earns recognition for politeness and clear communication, while Shawn has been highlighted for comprehensive knowledge during heat pump installations. Multiple reviewers note the office staff provides rapid scheduling and proactive updates throughout the service process.