Your Best Choice for AC, Insulation, & Furnace Repair in Knoxville, TN
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!
Local Reviews
for Knoxville, TN
Powered by Nearby NowLove their service!
Tina - Knoxville, TN 37922
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!
Duct Sealing
Rick f - Knoxville, TN 37922
Good job by Tommy & his team.
Juan is a great technician for A-1
Ann - Knoxville, TN 37923
Juan came today to service my Dakin unit. He did a very good job and was very informative.
Great service!
Jodie - Knoxville, TN 37922
Juan was a pleasure and explained everything he was doing as he serviced our hvac systems.
A-1 Certified has GREAT Employees
Victoria - Knoxville, TN 37919
Service Check
Renata - Knoxville, TN 37923
Juan was so nice! I could not be more pleased with his thorough work and his friendly demeanor.
Great Service!
TimK - Knoxville, TN 37931
The service tech Juan was polite and professional. It was an overall good experience.
Service review
John - Knoxville, TN 37923
Very good service
Great service
Elizabeth - Knoxville, TN 37931
Very friendly. Answered all my questions and was knowledgeable.
Great technician
Cathy - Knoxville, TN 37931
Professional service tech
Mark - Knoxville, TN 37917
Great experience
Very professional, thorough service
Sharon - Knoxville, TN 37938
Very polite, discussed any issues he found before proceeding with the work.
Professional & Courteous
Julie - Knoxville, TN 37923
Great experience
Awesome Tech
Wyatt - Knoxville, TN 37918
Jason is the best worked until the job was done!
Juan was great and professional, great service
Karen - Knoxville, TN 37921
We’ve been with you all since 2004. You have gone through changes, but remain very efficient. Thanks to Madison for the follow up!
Awesome service!
Patricia - Knoxville, TN 37932
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 Serive
Joe - Knoxville, TN 37918
Great service as always
Amazing service
Rosaura - Knoxville, TN 37924
Excelente
Great service!
Pat - Knoxville, TN 37931
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!
Great service
Joy - Knoxville, TN 37931
Tech very helpful and professional
Knowledgeable and professional service, quick scheduling, price.
Brian - Knoxville, TN 37938
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!
Great service
Taylor's - Knoxville, TN 37920
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.
Excellent service, priced for homeowner to be able to maintain their system.
Tedra - Knoxville, TN 37931
Timely, conscientious technician, conveys his findings well.
Honest and Knowledgeable
Mark - Knoxville, TN 37931
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.
Expert service
Riley - Knoxville, TN 37931
As usual, no complaint. Everything was done thoroughly
Jason was great!
Jamie - Knoxville, TN 37931
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.
On time and great service
Yvonne - Knoxville, TN 37921
They technician was prompt courteous and did a good job with both of our heating and cooling units.
Friendly & On Time
Cheryl - Knoxville, TN 37932
Service was great - technician was on time and got the work done in a timely manner so I could go about my day.
Great service
David - Knoxville, TN 37923
Juan was awesome very helpful.
Homeowner
Glenn - Knoxville, TN 37934
Great service, on time
Cheryl - Knoxville, TN 37923
Called ahead to let me know he was on way, very courteous, let me know how things looked.
Great service
Bailey - Knoxville, TN 37919
Prompt, respectful, great service
Jane - Knoxville, TN 37934
Good Communications
Henry - Knoxville, TN 37931
Notified prior to arrival time, knowledgeable on the system and repairs.
Exceptional friendly service
Jimmy - Knoxville, TN 37931
A-1 provided me with quality and friendly service and answered any questions I had
Amazing!!!
Kourtney - Knoxville, TN 37931
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!
Very friendly, good communication
Whitney - Knoxville, TN 37931
Ash did a great job letting me know she was on her way and in how my units were doing.
Just what was needed
Michael - Knoxville, TN 37922
Thanks for the Check up
Tom - Knoxville, TN 37922
Great service
Cynthia - Knoxville, TN 37918
Arrived as scheduled. Technician was very friendly &completed task quickly & efficiently.
Ash was amazing! Couldn’t have asked for better service! AMAZING!!
Glen - Knoxville, TN 37922
Prompt service
Judy - Knoxville, TN 37932
All aspects of service were done in a timely manner. Professional. Guys put on masks when around me and in house
Ash was Awesome!
Josh - Knoxville, TN 37920
Great Service!
great service
Stellanie - Knoxville, TN 37922
She was very friendly and knowledgeable
Great service
Saundra - Knoxville, TN 37917
She called before she arrived and when she arrived told me everything she did
Tommy M.
Mini slpit
Jason S.
Jason S.
Preventative maintenance
Kris K.
Installation Daikin air conditioner unit
Kris K.
Installation Daikin air conditioner unit
Kris K.
Installation Daikin air conditioner unit
Kris K.
Installation Daikin air conditioner unit
Juan M.
Performing maintenance on Amana AC unit
Juan M.
Performing maintenance on Amana AC unit
Juan M.
Performing maintenance on Amana AC unit
Juan M.
Performing maintenance on Amana AC unit
Juan M.
Performing maintenance on a trane package
Juan M.
Performing maintenance on a trane package
Juan M.
Performing maintenance on a trane package
Juan M.
Performing maintenance on a trane package
Juan M.
Performing maintenance on a Lennox Heat pump
Juan M.
Performing maintenance on a Lennox Heat pump
Juan M.
Performing maintenance on a Lennox Heat pump
Juan M.
Performing maintenance on a Lennox Heat pump
Juan M.
Performing maintenance on Goodman package units.
Juan M.
Performing maintenance on Goodman package units.
Juan M.
Performing maintenance on Goodman package units.
Juan M.
Performing maintenance on Goodman package units.
Juan M.
Performing maintenance on Amana package heat pump
Juan M.
Performing maintenance on Amana package heat pump
Juan M.
Performing maintenance on Amana package heat pump
Juan M.
Performing maintenance on Amana package heat pump
Juan M.
Performing maintenance on a Daikin Heat Pump
Juan M.
Performing maintenance on a Daikin Heat Pump
Juan M.
Performing maintenance on a Daikin Heat Pump
Juan M.
Performing maintenance on a Daikin Heat Pump
Juan M.
Performing maintenance on a Daikin FIT System
Juan M.
Performing maintenance on a Daikin FIT System
Juan M.
Performing maintenance on a Daikin FIT System
Juan M.
Performing maintenance on a Daikin FIT System
Juan M.
Performing maintenance on a Coleman package unit
Juan M.
Performing maintenance on a Coleman package unit
Juan M.
Performing maintenance on a Coleman package unit
Juan M.
Performing maintenance on a Coleman package unit
Juan M.
Performing maintenance on a Daikin AC
Juan M.
Performing maintenance on a Daikin AC
Juan M.
Performing maintenance on a Daikin AC
Juan M.
Performing maintenance on a Daikin AC
Juan M.
Performing maintenance on a Goodman and Amana AC units
Juan M.
Performing maintenance on a Goodman and Amana AC units
