In the Knoxville area, A-1 Certified Service, Inc. is well known for providing exceptional furnace repair, installation, and service. The people we send out to serve you are also top notch, something you'll see in their reviews below. Everyone you deal with at our company has the goal of making sure your experience with us will be so good you'll call us every time you need help. You can feel confident working with A-1 Certified Service, Inc. because we stand behind our work and comply with all local codes. This is why, as you can see by the map and reviews below, we are rated so highly for AC, Insulation, & Furnace Repair in Knoxville, TN. Call us today at (865) 691-5088!
I have used them for our HVAC and attic insulation needs. All experiences have been great! They do such a good job at explaining things & answering our questions. Their office personnel always keep you updated if schedules need to be shifted- good communication. They are also cost efficient!
Good job by Tommy & his team.
Juan came today to service my Dakin unit. He did a very good job and was very informative.
Juan was a pleasure and explained everything he was doing as he serviced our hvac systems.
Juan was so nice! I could not be more pleased with his thorough work and his friendly demeanor.
The service tech Juan was polite and professional. It was an overall good experience.
Very good service
Very friendly. Answered all my questions and was knowledgeable.
Very polite, discussed any issues he found before proceeding with the work.
Jason is the best worked until the job was done!
We’ve been with you all since 2004. You have gone through changes, but remain very efficient. Thanks to Madison for the follow up!
A-1 has always given true reliable service, keeps my old Rheem going strong. Thanks Jason for always being friendly kind and respectful of our home. God Bless you.
Great service as always
Very pleased with A-1 Certified! Always courteous and on time. I know I can trust their quality of work and honesty! #1 in this area!
Tech very helpful and professional
Jason checked our HVAC unit head to toe, diagnosed the issues, informed us of our options and completed the repairs in one visit. Worth every penny and greatly appreciated!
Jason did a really good job and was prompt in his work. He also discussed that based on age of my unit it is still working well. He pointed out things to listen and watch for yo ensure it keeps working h well.
Timely, conscientious technician, conveys his findings well.
Happy with their service and really enjoy Jason. He knows how to fix things and was upfront and honest with me. Exactly what you want in an A/C repairman.
As usual, no complaint. Everything was done thoroughly
Jason phoned ab it 15 minutes prior to arriving & arrived on time, introduced himself and wore his blue shoe coverings while in our home. He proceeded to inspect our units and when he was done, he explained what he had done & then had me sign 2 forms he had used to do his inspections. Jason was very professional, courteous & got right to work.
They technician was prompt courteous and did a good job with both of our heating and cooling units.
Service was great - technician was on time and got the work done in a timely manner so I could go about my day.
Juan was awesome very helpful.
Called ahead to let me know he was on way, very courteous, let me know how things looked.
Notified prior to arrival time, knowledgeable on the system and repairs.
A-1 provided me with quality and friendly service and answered any questions I had
Ash was amazing and so was her helper. Very professional and went over everything in detail so I knew what the best options were. Great customer service and was able to schedule a follow-up and email a quote before leaving. Would highly recommend! Thanks for such a great experience!
Ash did a great job letting me know she was on her way and in how my units were doing.
Arrived as scheduled. Technician was very friendly &completed task quickly & efficiently.
All aspects of service were done in a timely manner. Professional. Guys put on masks when around me and in house
She was very friendly and knowledgeable
She called before she arrived and when she arrived told me everything she did