Your best choice for AC, Plumbing, & Furnace Repair in Knoxville, TN
Since 2000, A-1 Certified Service, Inc. is your best choice for repair, installation, and service in homes and buildings just like yours in the Knoxville area. We take special pride in the craftsmen we train and employ--a fact you'll see in the reviews below. It's also noticeable immediately in the attitude and integrity our technicians bring to your job site. Our entire company works hard to make your experience with us hassle-free and enjoyable. You can also be assured that A-1 Certified Service, Inc. stands behind the work we do as well as complies with all local codes. This is why, as you can see by the map and reviews below, we are rated so highly for AC, Plumbing, & Furnace Repair in Knoxville, TN. Call us today at (865) 691-5088!
Local Reviews
for Knoxville, TN
Powered by Nearby NowVery nice technician
Robert - Knoxville, TN
Brandon was very nice and professional. Seems to have fixed problem! Thank you!
Brandon did a excellent job with the installation and explaining the correct operating procedure to me.
Teresa - Knoxville, TN
Satisfied customer
Kathy - Knoxville, TN
My heat pump went out twice in 72 hours during the extremely cold weather. Matt got it running again,took the time to research the history of problems and arranged for a warranty replacement of the heating unit. He was very professional and took the time to explain what he was doing.
Wonderfully patient experienced workers!
Rita - Knoxville, TN
I didn’t understand how they were going to fix my ducts and they explained it to me in layman’s terms. They cleaned up after themselves and everything looks great! I had some additional questions and they told me other services they offered. I use these guys for regular maintenance too. Will continue to call on them as this old house grows older!
Excellent service
Geroge - Knoxville, TN
Marcus was very knowledgeable and very helpful.
Knowledgeable and considerable
Tony - Knoxville, TN
Mat was professional and courteous and experienced and arrive at a timely manner thank you
Fantastic service.
Marty - Knoxville, TN
Great
Wanda - Knoxville, TN
Very good and A-1 Service
SATISFIED CUSTOMER!!
Angel - Knoxville, TN
I am so grateful for Ms. Shanda, Mr. Josh, Jimmy and Matt Mann. They were very professional, courteous and knowledgeable about the work they were doing at my house. They did not stop until the work was properly installed and perfect! Thanks to this crew...we now have great heat and awesome new windows. It works great and looks good too. Please acknowledge them for there great work, efficiency and effectiveness. They are truly an asset to your company! God Bless. Mrs. Bowman
Great Service, knowledgeable professional
Mark - Knoxville, TN
Matt was our HVAC professional who was prompt, polite, knowledgeable, and skilled.
Great
Charlene - Knoxville, TN
Service was excellent, courteous and informative
Efficient and knowledgable
Roger - Knoxville, TN
Our HVAC unit was under warranty through A-1. The heat pump wasn't working. They came out same day and got it taken care of under warranty.
Brandon U.
Tankless water heater maintenance
Matt L.
No heat on Goodman package heat pump.
Marcus W.
Heat maintenance, York Split HP
Matt L.
Performed a heating inspection on a Coleman split heat pump.
Matt L.
Performed a heating inspection on a Coleman package heat pump.
Brandon U.
Plumber needed dishwasher install
Matt L.
Performed a heating inspection on a package Coleman heat pump.
Matt L.
Installed new heat kit on Lennox air handler.
Matt M.
Ductwork replacement. Ductwork relocation.
Matt M.
Ductwork replacement. Ductwork relocation.
Matt M.
Ductwork replacement. Ductwork relocation.
Matt L.
Brandon U.
Plumber needed for bathroom update complete
Matt L.
Installed new wall mount heater.
Matt L.
Performed a heating inspection on a Coleman package heat pump.
Marcus W.
Maintenance, Coleman pkg HP
Matt L.
Performed heating inspection section on a Coleman split heat pump.
Matt L.
Performed heating inspection on a Coleman split heat pump.
Matt M.
Duct replacement duct relocation
Matt L.
Performed a heating inspection on a Coleman package heat pump.
Marcus W.
No heat, Amana
Matt L.
Performed a heating inspection on a Coleman package heat pump.
Marcus W.
Heat Maintenance, Daikin
Matt L.
No heat on Lennox split heat pump system.
Matt M.
Goodman heating repair.
Matt L.
Electric heat repair on a Nordyne electric air handler.
Brandon U.
Navien tankless installed
Marcus W.
Service call, no heat, American Standard
Brandon U.
Plumber needed. Upgrading 20yr water heaters to navien tankless water heater
Matt L.
Service call on a Coleman split heat pump.
Brandon U.
Training
Scott H.
Training
Tommy M.
Training
Matt M.
Daikin installation. HVAC replacement.
Matt M.
Trane replacement
Matt M.
Trane, HVAC maintenance
Marcus W.
Service call, no heat, Lennox
Matt L.
No heat on Coleman split heat pump.
Matt L.
Checked electric heat on a Heil package heat pump.
Matt L.
Performed heating inspection on a Coleman package heat pump.
Matt L.
No heat call on a Coleman package gas unit.
Matt M.
HVAC repair, window installation.
Matt L.
Performed a tune up on a Daikin 90 plug gas furnace.
Scott H.
New construction and main water and sewer.
Marcus W.
Service no heat, Daikin pkg hp
