A-1 Certified Service, Inc.

A-1 Certified Service, Inc. is a full-service HVAC, insulation, and Home Performance company serving the Knoxville area. Customers have expressed great satisfaction with the company's professional and personable technicians, who are experienced, courteous, and knowledgeable. The technicians communicate well, work hard, and are dedicated to providing exceptional service. Customers have found the company to be reliable and have used their services for both personal and business needs, always receiving professional and quality work.

The company has consistently received excellent reviews from customers. Technicians like Zachary Ian Staggs have been praised for their professionalism and expertise in repairing and servicing HVAC systems. Customers have been very happy with the technicians' ability to diagnose and fix issues, as well as their clear explanations of the work done. The company is highly recommended for HVAC repair, replacement, and installation services.