Call Now for Sudden Service!
(865) 691-5088
  • Free Estimates on Home Performance, Insulation, and Air Conditioning & Heating
  • Free Estimates on Water Heater Replacement
  • 24/7 Emergency Service Available for Plumbing and Heating & Air
  • Family Owned & Operated Local Business

Emergency Service

Sudden Service When You Need It

We have all had this happen at some point or another. You come home and your home's heating or cooling is not working, or you've turned on the hot water and only cold water is coming out. Rest assured, we offer 24-Hour Emergency Service when you need it most!

We Offer

Services at Fair Prices

  • Air Conditioning and Heating Replacement
  • Air Sealing
  • Dehumidification, Humidification, and Indoor Air Quality (IAQ)
  • Duct Sealing & Replacement
  • Full Service Residential & Commercial Plumbing Repairs, Drain Cleaning, Sewer Services, and Water Heater Replacements
  • Insulation
  • Preventative Maintenance & Service Agreements

We’re Committed to Excellence

Our Commitment to You

Our Commitment is to provide your business or home with quality, comfort, and energy efficient solutions. Our mission is to deliver Best In Class Services through continuous education, and with innovative solutions to everyday applications in comfort and safety. We are driven to provide both technologically advanced and sustainable products and services, which will reduce your utility bills and your carbon footprint on our environment, while also increasing your home's safety and comfort. A-1 Certified Service wants to provide each and every customer with the best quality products and services that we expect ourselves.

Our Service

Knoxville and Surrounding Areas

We Proudly service Knoxville, Knox County, and Surrounding Counties.

Providing qualified and friendly services at fair prices

01. New and Replacement System Installation

A-1 Certified Service, Inc. offers you options to meet your budget needs when you have to replace your heating and air system. If you are planning on building a new home, we are here to help you with the design and installation of your new home’s HVAC and Duct System.

02. Full Service Plumbing

We understand the importance of keeping your plumbing working at all times. Our licensed experts at A-1 Certified Service are here to provide you with any plumbing repairs or replacements you may need.

03. We Service All Makes and Models

A-1 Certified Service, Inc. services all makes and models of HVAC. Our technicians are NATE (North America Technician Excellence) & EPA certified.

04. Residential and Commercial Maintenance/Service Agreements

Routine Maintenance will ensure your system is running at its best performance possible to keep you comfortable throughout the year.

05. Home Performance

A-1 Certified Service, Inc. recognizes your home is a system, which impacts your comfort and your wallet. Home Performance is the science of how to make your home more comfortable, safe, healthy, and energy efficient. Ask our comfort specialist what A-1 Certified Service, Inc. can do to improve your home’s performance.

06. Air & Duct Sealing

Air Sealing/Infiltration Reduction and Duct Sealing is the best way to reduce your home’s utility bill and carbon footprint. A-1 Certified Service, Inc. has the tools to show you where your home is leaking air into and out of your home. We have the solutions to significantly reduce air loss, improve your home’s comfort and save you money.

07. Insulation

Proper insulation will keep your home warm in the winter and cool in the summer. We offer both fiberglass and cellulose to aide in your home’s insulation needs.

08. Financing Available

We understand the importance of both your comfort and safety, and we are here to help! Whether you have to purchase a new HVAC system or are in need of a major Plumbing and/or Heating and Air repair, A-1 Certified Service, Inc. can provide the financing options to meet your needs. We have on-the-spot financing in your home, which includes a variety of financing plans with no-money down or 0% interest.

09. TVA Escore

A-1 Certified Service, Inc. is a proud member of the TVA Escore (QCN) Quality Contractor Network. Escore provides rebates for many home performance upgrades, such as new HVAC systems, duct system replacement, air sealing, duct sealing, insulation, and new Heat Pump Water Heaters. Click below and sign-up to get your Escore rebates working for you!
Quality Contractor Network

Offering repair services for all major brands