In the Knoxville area, A-1 Certified Service, Inc. is well known for providing exceptional ac 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!
Ed and Jamall were professional, courteous and personable. They completed our preventive maintenance efficiently.
Jamal was awesome!! Very nice and knowledgeable. Answer all my questions and head great customer service. Thank you.
I cannot speak highly enough about this group. They were so kind and professional and the work they did was A+. Don’t hesitate. Hire them!
Andy and the guys from A1 were a pleasure to have during their work. It was a big project and I could see how well their time management worked in coordinating and planning the days here. They were very friendly and took the time to explain all the processes if I had any questions or was curious. They were also okay if I needed to WFH, they would do their thing. They brought expert knowledge of advanced systems and a good work ethic. Definitely recommend Andy and his team.
He was so very nice and helpful. I always have great service any time you guys come out. I really appreciate you all.
Jamall was professional and very polite, which was an added bonus, and went above and beyond his duties when reparing my 83 year old moms heat and air unit! He arrived well within the given time frame we were given and quickly had the unit up and working very well again! She was very pleased!
The whole crew were very friendly and knowledgeable ! Enjoyed having them in our home.
Excellent service as always. Jamall T has serviced our home unit multiple times and always does an outstanding job!
On time. Good communication. Semi-annual service to make sure my system is running properly. The technician was friendly and explained things well.
The techs that came out were very knowledgeable and any questions I had…They introduced themselves immediately and they very pleasant to work with. I was very please with the service….one tech handled the outside unit while the other gentleman (Ed) checked the actual motor …. They actually came at the early time scheduled for the time I was expected which I felt very lucky for 😊 I have always had great service from A1 and highly recommend them to anyone I know about the comfy…
Jacob and his crew Done a awesome job they were very professional and very nice they took the time to explain everything to me and showed me how all my new equipment operated I highly recommend them
Ed M. worked to resolve problems that were not easy to fix. Great job!
A1 provides amazing service… quick and reliable. They stand behind the work they do. Jamall is a joy… so helpful with your HVAC needs.
Awesome service
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.
Great experience
Very polite, discussed any issues he found before proceeding with the work.
Great experience
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
Excelente
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.
Maintenance
Bad capacitor on split system
Clogged drain line
Maintenance
Service
Maintenance
Maintenance
Maintenance
Home performance R38 Attic insulation, air sealing and duct sealing
Split system maintenance
Bad cap 45+7.5
Completed maintenance on package system