A-1 Certified Service

daikin pro1
Your Trusted Heating and AC Contractor
in Knoxville and the Surrounding Areas
Over 60 Years
Call Today
Financing AvailableSubject to credit approval.
Learn More
rebates are
up to $1200
on VRV Life
and up to $1300
on Daikin FIT
Call Today

Save Up To $800
On Preferred Systems
and Select Services
with TVA's EnergyRight
Rebates!
Learn More!

About

A-1 Certified Service, Inc.

The Trusted HVAC Contractors in Knoxville, TN

line img

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.
owned
about img

Customer Reviews

cta line

Kasi B.

A-1 did a great job working with us to find a unit that met our needs. Scheduling was fast and the front office was really good at communicating everything. Our technician was fast and clean, going so far as to cover and tape all the clothes in the closet before going into the attic. I’d definitely recommend them!

Penny W.

Appreciate the rapid response from A-1 Certified! Jimmy arrived as scheduled, was kind and courteous, identified the issue and promptly had the problem resolved.

Eddy F.

Jimmy and his sidekick (dang it, I’ve already forgotten his name) were on-time, friendly, confident, quick and explained things well.

Lugene B.

The whole team at A-1 are absolutely amazing. They all went above and beyond to do an absolutely stellar job at my house installing a new heat and air system and duct work. Besides all of them being very professional they are also very kind, caring and personable. They get a 1000 + star from me.

Frank L.

Jimmy was prompt, professional and very informative concerning the repair and how my maintenance plan helped in the response time and discount.

Jeff W.

The tech was courteous and knowledgeable. He quickly showed me the problem and fix. It was simple and I’m glad it wasn’t anything more. The value of his visit is that he had the knowledge and skill to go to the simplest solution first, something I didn’t have. If that wasn’t the problem he would have had to go to the next level which I’m secure in the fact that he had the same knowledge and skill. Worth it.

Who we Serve

cta line
Residential 1

Residential arrow a1

commercial

Light Commercial arrow a1

wws image

Our Promotions

cta line
promotion 200 off
promotion 20 off

featured
Manufacturer

cta line

We Service All Major Makes and Models

daikin a1
daikin pro1
fm a1

Frequently
asked questions

cta line

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. Our Daikin HVAC system includes Daikin furnaces, Daikin heat pumps, Daikin FIT, Daikin ductless, Daikin VRV, Daikin inverter AC, Daikin AC, Daikin mini-splits. Daikin packaged units are among the best on the market, offering top-of-the-line features and energy efficient options.

Service Areas

cta line

Financing available

cta line

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.

greensky

Exclusive Club Memberships

cta line

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

You'll enjoy the following benefits:

HVAC Maintenance In Knoxville, Corryton, Campbell, TN, and Surrounding Areas

Exclusive Club Memberships

cta line

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

You'll enjoy the following benefits:

cta line

Platinum

PRESTIGE SERVICE

$499/year or $42/month per system
  • Priority appointment
  • Equipment must be registered to current client, and be under 5 years in age, and go through a thorough inspection with no major repairs required.
  • 45-point inspection with standard coil cleaning
  • 100% off on parts and labor
  • 2 visits per year
  • Standard filter change included
cta line

Gold

PRIME SERVICE

$350/year or $30/month single system
$165 for each additional system
  • 45-point inspection with standard coil cleaning
  • 15% off on parts/labor/diagnostics fees
  • 2 visits per year
  • Standard filter change included
cta line

Silver

Priority Service

$250/year or $21/month single system
$125 for each additional system
  • 20-point inspection coil cleaning is not included
  • 10% off on parts/labor/diagnostics fees
  • 2 visits per year

Contact Us For HVAC Maintenance In Knoxville, Corryton, Campbell, TN, and Surrounding Areas

cta line

Platinum

PRESTIGE SERVICE

$42/month per system
System must be less then 5-years old based on verified warranty information and pass a thorough inspection before joining the Platinum Membership.
  • As a Platinum Club Member,
    you are guaranteed:
  • Priority apointments, 45-point inspection for each visit, both an annual indoor and outdoor coil cleaning and a annual supply of Merv 8 filter, (a six month supply at evach maintanance visit)
  • 100% off service repairs
    (including parts, labor
    and refrigerant)
  • Bi-annual preventative maintenance
  • Discounts : 100% of all service repairs, trip fee and shipping charges are not covered.
cta line

Gold

PRIME SERVICE

$30/month single system
$165 for each additional system
  • As a Gold Club Member,
    you are guaranteed:
  • 45-Point inspection for each visit. Both an annual indoor and outdoor coil cleaning and a annual supply of Merv 8 filter, (a six month supply at evach maintanance visit)
  • 20% off service repairs
    (including parts, labor
    and refrigerant)
  • Bi-annual preventative maintenance
  • Discounts : 15% of all service repairs, trip fee and shipping charges are not covered.
cta line

Silver

Priority SErvice

$21/month single system
$125 for each additional system
  • As a Silver Club Member, you are guaranteed:
  • 20-Point inspection on each visit
  • 15% off service repairs
    (including parts, labor
    and refrigerant)
  • Bi-annual preventative maintenance
  • Discounts : 10% of all service repairs, trip fee and shipping charges are not covered.