2511 Byington Solway Rd
Knoxville, TN 37931
865-691-5086

Our Top Cities


Local Reviews

Rated 4.9 out of 5 stars based on 222 customer reviews

Exceptional service

Tommy was great during the installation of the new HVAC and ductwork. He made sure that I was completely satisfied with the entire job. In fact, there were several members that assisted with the job. Stacey was awesome and answered my questions and setup the appointment. She is very kind and great at her position. I want to mention the following persons, Andy, Cayden, Pat, Josh and Gabe. They were all very courteous and the job performance was excellent. I truly appreciate the 5 star service and kindness. A1/CSI is a great company.

  • Overall Experience
  • Quality
  • Price
  • Convenience

Prompt and thorough HVAC maintenance.

  • Overall Experience
  • Quality
  • Price
  • Convenience

Very good service!

  • Overall Experience
  • Quality
  • Price
  • Convenience

Quality Service

The work was well done and as specified.

  • Overall Experience
  • Quality
  • Price
  • Convenience

Good job as expected

A1 CSI has always taken care of me over the years. Thank you.

  • Overall Experience
  • Quality
  • Price
  • Convenience

Good Job!

Cory arrived on time, was thorough, and made a great recommendation about our furnace filter.

  • Overall Experience
  • Quality
  • Price
  • Convenience

Great service

Does a great, really knows his job and is a pleasant person

  • Overall Experience
  • Quality
  • Price
  • Convenience

Excellent as always!

Corey is so dedicated, patient, and friendly. Although he fixed the furnace yesterday, it stopped working again this morning. He took extra time out of his very full schedule to help us. I feel like the most VIP in their clientele.

  • Overall Experience
  • Quality
  • Price
  • Convenience

Excellent as always!

Corey had to come back because my furnace was being fussy. He dove down and found the problem and fixed it. He explained what it was and even made some suggestions on how to avoid the problem in the future. He's always patient and polite and nice. He's always capable and prompt.

  • Overall Experience
  • Quality
  • Price
  • Convenience

Excellent service

Cory does a great job

  • Overall Experience
  • Quality
  • Price
  • Convenience

Excellent service!

  • Overall Experience
  • Quality
  • Price
  • Convenience

Perfect

Cory is the nicest guy, and he found the problem and fixed it fast! Perfect service.

  • Overall Experience
  • Quality
  • Price
  • Convenience

Excellent.

Andy and his team did a great job on sealing our attic vents and insulating our garage. Respectful, efficient. Andy communicated well with me throughout the 2-day project.

  • Overall Experience
  • Quality
  • Price
  • Convenience

great job, very thorough

Cory was very thorough. He kept testing til all issues were fixed

  • Overall Experience
  • Quality
  • Price
  • Convenience

Great service

  • Overall Experience
  • Quality
  • Price
  • Convenience

Job Locations

Cory J.

Cory J. Job Checkin

A/C Repair


Cory J.

Cory J. Job Checkin

Furnace Repair


Cory J.

Cory J. Job Checkin

Air Conditioning Maintenance


Cory J.

Cory J. Job Checkin

Heat pump repair


Cory J.

Cory J. Job Checkin

Furnace repair


Tommy M.

Tommy M. Job Checkin

Daikin package unit gas

Daikin package unit gas

Cory J.

Cory J. Job Checkin

Heat Repair


Cory J.

Cory J. Job Checkin

Furnace inspection


Cory J.

Cory J. Job Checkin

Heat Repair


Cory J.

Cory J. Job Checkin

Furnace Maintenance


Cory J.

Cory J. Job Checkin

Heat Maintenance


Cory J.

Cory J. Job Checkin

Furnace maintenance


Cory J.

Cory J. Job Checkin

Mini Split Repair


Cory J.

Cory J. Job Checkin

Heat Pump maintenance


Cory J.

Cory J. Job Checkin

Furnace Repair