Due to the lack of resources in the available labor situation, we are having to remove our 24-hour service availability to customers. Once we are able to restate 24-hour service we will change our hours of service back to 24-hour emergency service. We apologize for the inconvenience at this time, but look forward to continually servicing all of our clients with 24-hour service in the near future. Sincerely, Michele Thomas
Call for reliable Furnace replacement in Knoxville TN.
Knoxville, Tennessee
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Your Trusted Heating and AC Contractor
in Knoxville and the Surrounding Areas for Over 60 Years

Your Trusted Heating and AC Contractor in Knoxville and the Surrounding Areas for Over 60 Years

See what makes A-1 Certified Service, Inc. your number one choice for Heat Pump repair in Oak Ridge TN.
Knoxville, Tennessee

Your Trusted Heating and AC Contractor
in Knoxville and the Surrounding Areas for Over 60 Years

Your Trusted Heating and AC Contractor in Knoxville and the Surrounding Areas for Over 60 Years

  Cities We Service
Check out our Ductless Heating repair service in Oak Ridge TN

Your Knoxville Heating, Insulation, and AC Experts

A-1 Certified Service, Inc. has been proudly serving the HVAC needs of the Knoxville and Oak Ridge area since 2000. And, we owe our success to the loyalty of customers like you. By putting you first, we've gained a reputation as the go-to company for furnace repair in Knoxville. In our 23 years of working on HVAC equipment, we've come to understand the quirks of almost every heat pump and furnace brand. This allows us to quickly diagnose your problem without having to schedule return visit after return visit. If there's ever a situation where our services do not meet your standards, we stand by our work with a comprehensive satisfaction guarantee. With all that considered, why wouldn't you call us for your furnace repair or replacement?
Why Choose Us?
Your Home...The place you share with those you love most, your haven in a busy world. A place whose comfort we're here to protect. From winter's chill through the dog days of summer, our primary goal at A-1 Certified Service, Inc. is to keep your home comfortable for you and your family. That's why we got into HVAC in the first place.

But, that's just the beginning. We also offer you peace of mind, ensuring your equipment operates safely. We help you save money on your fuel bills. And we help deliver relief to those with allergies and many others concerned with the quality of the air they breathe.
Go Ahead, Explore...
This site is specifically designed to help you become an informed consumer when it comes to your home's heating and AC systems. Go ahead, explore. The pull-down menus make it easy. Not only will you learn how these systems work, but also how to shop smart and protect your investment.

If you're not sure where to find help with a specific question, try our site's search engine. And, don’t miss the 'Answers and Information' section on our menu to learn about your home's HVAC systems and simple things you can do to save money and get the most from them.
We stand behind our Heating company's work in Oak Ridge TN.
100% Guaranteed
If you're interested in replacing your old outdated heating or AC system, check out how we ensure your satisfaction.
We specialize in Zoning to keep your home comfortable in Knoxville TN.
Zone Your Home
Are you tired of having uncomfortable rooms that are either 'too hot' or 'too cold'? Our Knoxville-area home zoning experts can help!
Sign up for our Heat Pump maintenace plan in Knoxville TN to ensure your home stays comfortable.
Maintenance
Learn more about how you can save energy and ultimately money when you sign up for our heating and air conditioning maintenance plan.
Schedule your duct cleaning in Knoxville TN today through A-1 Certified Service, Inc..
Client Reviews
Click here to see what your friends and neighbors are saying about their recent experience with our HVAC and insulation company.
See what your neighbors are saying about our Furnace repair service in Farragut TN
Guaranteed
If you're interested in replacing your old outdated heating or AC system, check out how we ensure your satisfaction.
We specialize in Zoning service in Knoxville TN so call A-1 Certified Service, Inc..
Zone Your Home
Are you tired of having uncomfortable rooms that are either 'too hot' or 'too cold'? Our Knoxville-area home zoning experts can help!
Join our maintenance plan for easy service for your Heat Pump unit in Knoxville TN
Maintenance
Learn more about how you can save energy and ultimately money when you sign up for our heating and air conditioning maintenance plan.
We excel in Duct Cleaning in Knoxville TN
Client Reviews
Click here to see what your friends and neighbors are saying about their recent experience with our HVAC and insulation company.

We’re Your Home Insulation Expert in Oak Ridge and Knoxville

Are you tired of paying through the nose to heat and cool your home? Does your furnace or heat pump pop on and off continuously in an attempt to maintain a consistent temperature? Well, this problem isn’t going to go away anytime soon without intervention. And, with fuel rates constantly increasing, they’re likely to become more pronounced. In a world striving to become more more eco-conscious and wallet friendly, you need a way to put an end to the waste. That’s where a home performance or insulation contractor comes in.

By replacing your old insulation with newer, more energy-efficient material, our HVAC experts help even out temperatures in your home while reducing your carbon footprint. When you rely on us for insulation in Farragut or Knoxville, you can kiss sky-high utility bills goodbye. So, get on the fast track to savings and say hello to improved home comfort. Call A-1 Certified Service, Inc. for a no-obligation quote today!

We excel in furnace repair in Knoxville TN.

Heating Replacement

If your furnace or other heating unit is pushing twenty years old, it might be time to consider a replacement. Not only will this lessen the chance of a midwinter breakdown, but being proactive will also save you money on your energy bills. Older furnaces are often inefficient and lack the pinpoint control of newer ones. Rest assured, if you aren't sure if you should install a new furnace or fix the old one, we'll push the option that's right for you—not for us. Reach out to us by email or phone to get a price on heating installation or replacement in and around Oak Ridge.
We excel in heater repair in Knoxville TN.

Heating Repair

Whether a quick fix, furnace or heat pump just needs to be cleaned. Or, it's a $25 dollar part and an hour or two of labor to get it running again. In those circumstances, repairing it is often more beneficial than replacing the entire system. But it can be hard to tell what kind of repair you need until a professional HVAC contractor takes a look. Since we've been doing this sort of thing since 2000, we suggest you start with us. If you need a second opinion on someone else's furnace repair diagnosis, we're happy to help with that too! Fill out our form below for prompt service in Farragut or Knoxville.
We excel in boiler repair in Knoxville TN.

Furnace Maintenance

Winter in Farragut and Knoxville can put your heating system through the wringer. To ensure it stands strong year after year, it needs an annual visit from an HVAC expert. That's why we offer comprehensive furnace maintenance throughout our service area. Scheduling an annual tune-up will not only help your furnace last longer but will also lower your energy bills. These appointments allow us to spot potential failure points before your system goes out. For more information on our furnace and ductless heating maintenance plans, give us a call at (865) 691-5088.
$20.00 Off
As a Thank You for Visiting our Website
$20.00 Off
As a Thank You for visiting Our Website
This Coupon entitles a Homeowner to a $20.00 Discount off any heating or air conditioning repair service performed by A-1 Certified Service, Inc. at their residence. Only one coupon per address accepted.
A-1 Certified Service, Inc. has certified technicians to take care of your Furnace installation near Farragut TN.
Code# CPNSTH - Heating & AC
Code# CPNSTP - Plumbing
Good Through:
February 2023
Printable Version
Free Diagnostics Charge
Free $79 Diagnostics Charge
Free Diagnostics Charge
Free $79 Diagnostics Charge with the purchase of a NEW Club HVAC or Plumbing Maintenance program.
This Coupon entitles a Homeowner to a Free $79 Diagnostics Charge with the purchase of a NEW Club HVAC Maintenance program by A-1 Certified Service, Inc. at their residence. Only one coupon per address accepted.
A-1 Certified Service, Inc. has certified technicians to take care of your Furnace installation near Farragut TN.
Good Through:
February 2023
Printable Version
Low on money? Get financing on your Furnace repair with A-1 Certified Service, Inc.
We offer financing options through GreenSky Financial. Click here for help covering your heat pump or furnace replacement.
Financing
Low on money? Get financing on your Furnace repair with A-1 Certified Service, Inc.
We offer financing options through GreenSky Financial. Click here for help covering your heat pump or furnace replacement.
Financing
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A-1 Certified Service, Inc. is a full-service insulation, geothermal, water heater, and HVAC company serving the Knoxville area. When it comes to dispatching an HVAC technician for your furnace, AC, heat pump, or mini-split repair or replacement, we only send the best. If you need a skilled insulation company, we can help you with that too! We proudly service Knoxville, Oak Ridge, Clinton, Powell, Louisville, Heiskell, Lenoir City, Oliver Springs, Alcoa, Friendsville, Norris, Briceville, Rockford, Rocky Top, Coalfield, Maryville, Andersonville, Petros, Corryton, Greenback, Loudon, Harriman, Jacksboro, Caryville, Kingston, Seymour, Mascot, Walland, Strawberry Plains, and the surrounding areas. And, at A-1 Certified Service, Inc., know we always put you first. So, when you ask Google for a “good heating or AC company near me” you know you’ve come to the right place. To get a quote on your furnace or heat pump repair, call (865) 691-5088. A-1 Certified Service, Inc. services all furnace, AC, and water heater brands including Carrier, Bryant, Payne, Trane, Lennox, Rheem, Ruud, Amana, Daikin, Mitsubishi, Fujitsu, Frigidaire, Gibson, Goodman, Lochinvar, AO Smith, Kohler, American Standard, GeoExcel, General, Aprilaire, Honeywell, White Rodgers, Dynamic, and Skuttle.
For Furnace in Knoxville TN, we accept all major credit cards.
 
We accept cash for Heating repair service provided in Oak Ridge TN.
We accept check for Heat Pump repair service provided in Farragut TN.
 
Call us today  •  (865) 691-5088  •  or  •  Fill Out Our Online Form
We accept cash for Heating repair service provided in Oak Ridge TN.
For Furnace in Knoxville TN, we accept most major credit cards.
We accept check for Heat Pump repair service provided in Farragut TN.
24 Hour Emergency Service Available
A-1 Certified Service, Inc. works with Trane Furnace products in Oak Ridge TN.
Contact Information
 
2511 Byington Solway Rd.
Knoxville, TN 37931
(865) 691-5088
Monday - Friday  |  8:00am - 4:30pm
Saturday and Sunday  |  Closed
Best HVAC & Furnace Repair in Knoxville
2511 Byington Solway Rd.
Knoxville, TN 37931
(865) 691-5088
M-F  |  8:00am - 4:30pm
24/7 Emergency Service Available
 
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