Business Details
50+ Years
experience
Emergency
services
Your Trusted HVAC Partner in Knoxville, TN
A-1 Certified Service has been a trusted HVAC contractor in Knoxville, TN, for over 60 years, providing quality heating, cooling, and indoor air quality solutions. Founded in the late 1960s in Central Florida by Tom Thomas, the company relocated to Knoxville in the 1990s and has served the region for over two decades. In 2012, Michele Thomas assumed leadership, continuing the legacy of excellence in HVAC services. Our team of certified technicians specializes in AC and heating installation, repair, maintenance, and replacement, using advanced technology and energy-efficient systems. We are committed to community service through partnerships with organizations like TVA EnergyRight and the Community Coalition Against Human Trafficking.Our dedication to personalized solutions, transparent pricing, and prompt service ensures customer satisfaction. With a focus on reliability and expertise, we offer 24-hour emergency services and flexible financing options. Our maintenance plans provide year-round system protection, while our Daikin-certified products guarantee cutting-edge performance. We prioritize customer education, explaining technical details in accessible terms to empower informed decisions. For residential and commercial clients, A-1 Certified Service remains a family-owned leader in HVAC innovation and service excellence.
Services
AC Repair
Heating Installation
Indoor Air Quality
Heat Pumps
Ductless Systems
Details
- Year established: 1960
Highlights and features
- 60+ years of HVAC expertise in Knoxville and surrounding areas
- Family-owned business with Daikin-certified technicians
- 24-hour emergency service for urgent HVAC needs
- Flexible financing options available with credit approval
- Community-focused with partnerships in local charities
What people say
Prompt and professional
Excellent service
Knowledgeable staff
Thorough and friendly
Great job
Services
AC Repair
Our AC repair service addresses refrigerant leaks, compressor failures, and electrical malfunctions with rapid diagnostics and efficient fixes. Technicians use advanced tools to restore cooling performance while ensuring energy efficiency. Customers benefit from minimized downtime during peak summer months.
Heating Installation
We install high-efficiency heating systems tailored to property size and climate requirements. Our process includes load calculations and equipment selection from trusted brands. Homeowners gain improved winter comfort and reduced energy bills through properly sized systems.
Indoor Air Quality
This service combines air quality assessments with filtration system installations to reduce allergens and pollutants. We offer HEPA filters, UV purifiers, and humidity control solutions. Clients experience healthier breathing environments and reduced allergy symptoms.
Heat Pumps
We provide heat pump installation, repair, and maintenance with expertise in Daikin systems. Services include refrigerant checks, coil cleaning, and efficiency optimization. Homeowners benefit from dual heating/cooling functionality and energy savings.
Ductless Systems
Our ductless solutions cater to homes without existing ductwork, offering zoned temperature control. Installation includes proper sizing and placement for optimal performance. Customers enjoy energy-efficient heating/cooling with minimal structural impact.
People
Michele Thomas
Owner
Michele Thomas leads A-1 Certified Service with over 20 years of HVAC industry experience. She continues her father's legacy through community involvement and technical innovation while managing daily operations and client relations.
Tommy
Technician
Tommy is a certified HVAC technician with expertise in system installations and complex repairs. His attention to detail and customer education approach has earned consistent praise in client reviews for residential and commercial projects.
Questions
What HVAC services do you offer in Knoxville?
We provide AC repair, heating installation, heat pump services, ductless systems, and indoor air quality solutions for residential and commercial clients.
Do you offer emergency HVAC service?
Yes, we provide 24-hour emergency service for urgent heating and cooling issues with same-day response available.
Are financing options available?
Yes, we offer flexible financing plans subject to credit approval for major HVAC repairs and equipment upgrades.
What maintenance plans do you provide?
Our Platinum, Gold, and Silver membership tiers include bi-annual inspections, priority scheduling, and service discounts tailored to system needs.
Do you service all HVAC brands?
Yes, we work with all major HVAC brands including Daikin, Trane, and Carrier for repairs, installations, and maintenance.
What areas do you serve?
We serve Knoxville, Alcoa, Clinton, Maryville, Oak Ridge, Morristown, and surrounding Tennessee communities for residential and commercial HVAC needs.
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