A-1 Certified Service

daikin pro1
Your Trusted Heating and AC Contractor
in Knoxville and the Surrounding Areas
Over 60 Years
Call Today
Financing Available
Apply Now
rebates are
up to $1200
on VRV Life
and up to $1300
on Daikin FIT
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Save Up To $1500
On Preferred Systems
and Select Services
with TVA's EnergyRight
Rebates!
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About

A-1 Certified Service, Inc.

The Trusted HVAC Contractors in Knoxville, TN

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Providing Quality Service for Your Comfort for Over 60 Years

For the past 60 years, the experts at A1-Certified Service, Inc. in Knoxville TN have given our customers comfort and peace of mind. We began in the late 1960's when cooling your home was in its infancy. Tom Thomas opened his doors to provide comfort to the homeowners in Central Florida. In the early 1990's, Tom moved to Knoxville, TN, and we have been serving the Knoxville & surrounding communities for over 20 years. In 2012, Tom released the reigns of A-1 Certified Service, Inc. to his daughter, Michele Thomas. Michele is continuing the legacy of providing the highest quality of air conditioning and heating and to ensure each customer receives the comfort they deserve.
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Customer Reviews

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Alex R.

Jamall and Ed were both great – prompt and professional service

Bart W.

Everyone that I worked with at A-1 was excellent. Michele consulted with me about different options to address the issue that I was having with my existing HVAC system. She was very patient and knowledgeable. Josh and Tommy did a great job with the installation. I am very satisfied with the experience and look forward to a more comfortable house.

Justin B.

I’ve had bad experiences with other companies and their HVAC maintenance plans (like having to chase them down for the agreed-upon service). Not with A-1 certified. They called to remind me that I was due and to schedule my apt! Ash was our tech and she was early, professional, and extremely friendly. Highly recommended!!

Ryan B.

Kris, Tommy, and the crew were great. Friendly enough, worked hard, cared about doing a good job, took the time to explain what they were doing and why… My family and I truly appreciate everything they did for us.

Suzanne R.

This family-owned business has always been our first choice for all of our AC/heating needs. Juan was prompt, courteous, helpful, and thorough. He answered my questions and explained in ‘this human has no freaking idea how the whole AC thing works’ terms – and I have to say, I truly appreciate that!! Juan is an asset. Thank you! Y’all are the best!

Becky M.

Very positive and friendly. Thank you. Would not have had to make a visit if the thermostat had been calibrated when installed.!

Who we Serve

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Residential 1

Residential

commercial

Light Commercial

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Our Promotions

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promotion 200 off
promotion 20 off

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Manufacturer

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We Service All Major Makes and Models

daikin a1
daikin pro1
fm a1

Frequently
asked questions

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For the past 60 years, the experts at A1-Certified Service Inc in Knoxville TN have given our customers comfort and peace of mind. We began in the late 1960’s when cooling your home was in its infancy. Tom Thomas opened his doors to provide comfort to the homeowners in Central Florida. In the early 1990’s, Tom moved to Knoxville, TN, and we have been serving the Knoxville and surrounding communities for over 20 years.

The Daikin Difference is redefining home comfort with some of the most technologically and aesthetically advanced solutions. Our energy-intelligent systems provide an unprecedented level of individual comfort and control. Beyond our products and solutions, our commitment to personal service and manufacturing in North America is what makes us stand out from the pack, leading with air intelligence. User-friendly designs and our passion for innovation is the hallmark of Daikin. As a leaser in our industry, our products provide high-efficiency solutions through zoning capability, advanced designs, and easy, reliable service.

Daikin systems are backed by comprehensive warranties, including a 12-year parts warranty on all products. Select Daikin products, such as furnaces, offer even more coverage, with 12 year unit replacement and lifetime heat exchanger warranties in addition to the standard parts warranty. To determine the exact warranty details for your specific Daikin product, speak with one of our experts

Daikin frequently offers rebates and incentives on its heating and cooling systems. The specific rebates available will vary based on location, time of year, and product. It is best to contact your local Daikin dealer to inquire about current rebates in your area and to see how you can take advantage of these offers. Your local dealer will have the most up-to-date information on Daikin rebates and will be able to provide guidance on how to qualify for them.

Service Areas

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Financing available

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Multiple Payment Options
for Your Convenience

If you are in need of major repairs or just want to upgrade your existing equipment, we have convenient financing options available upon credit approval.

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Exclusive Club Memberships

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You can protect your system by investing in a club membership from A-1 CSI

You'll enjoy the following benefits:

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Platinum

PRESTIGE SERVICE

$399.00 per year or
$40.00 per month for 1 system
  • As a Platinum Club Member,
    you are guaranteed:
  • Priority appointments
  • 100% off service repairs
    (including parts, labor
    and refrigerant)
  • Bi-annual preventative maintenance
  • $59 service fee
  • $159 a year per additional systems
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Gold

PRIME SERVICE

$249.00 per year or
$25.00 per month for 1 system
  • As a Gold Club Member,
    you are guaranteed:
  • Priority appointments
  • 20% off service repairs
    (including parts, labor
    and refrigerant)
  • Bi-annual preventative maintenance
  • $69 service fee
  • $129 a year per additional systems
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Silver

Priority SErvice

$179.00 per year or
$15.00 per month for 1 system
  • As a Silver Club Member, you are guaranteed:
  • Priority appointments
  • 15% off service repairs
    (including parts, labor
    and refrigerant)
  • Bi-annual preventative maintenance
  • $79 service fee
  • $99 a year per additional systems