A new AC unit installation in northeast Tennessee keeps your home cool and comfortable during the hot Tennessee summers. When your cooling system can no longer keep up, breaks down repeatedly, or has reached the end of its lifespan, ThermoSTAT Heating & Cooling provides professional installation services tailored to homes throughout the area. Our team handles the entire process from assessing your cooling needs to installing your new equipment and verifying everything runs properly before we leave.
Posted on Lisa Russ2025-10-06Trustindex verifies that the original source of the review is Google. I would like to express my sincere gratitude to Matt for his exceptional service. He exceeded his responsibilities by adding a heat pump to my home purchase. Without prior acquaintance, he took the initiative to visit the property and assess the job requirements. On the same day, he contacted me to confirm that he could complete the task within a few hours, providing a reasonable price. I was delighted not only by the affordability but also by his ability to schedule the work for the following week. After searching for a month for someone to undertake this project, I encountered numerous companies unwilling to travel to my area. However, Matt not only accepted the job but also executed it with remarkable skill and efficiency, all while keeping costs manageable. I wholeheartedly recommend him and his company to anyone seeking honesty, quality workmanship, and a customer-first approach. Thank you, Matt, for your outstanding support "Lisa Russ"Posted on Brianne Hess2025-10-06Trustindex verifies that the original source of the review is Google. Matt and his team are amazing! Extremely professional and meticulous in their work. Matt is fast at addressing issues and accommodating when it comes to scheduling, even going as far as making weekend visits. His installation techniques and HVAC knowledge are something to be proud of! Best in LaFollette! Matt has faith in his units, and I have faith in Matt.Posted on Josiah Name2025-09-26Trustindex verifies that the original source of the review is Google. Scheduling was very simple and the person organizing dispatch was courteous. The technician was professional in appearance and behavior. Initially we had scheduled for an annual maintenance which was quoted at $199 but as it turned out we were having problems with our evaporator coil freezing so that was reduced to a diagnostic service call for only $80; that was my mistake for scheduling it as an annual checkup as opposed to a service call so I don't know that the tech was prepared to do cleaning and/or repairs. He did inspect the equipment however, after finding our return vents suboptimal are evaporator coil clogged and potentially a bad capacitor and dirty fan blades and our outdoor condenser was reportedly " very loud but in operable condition with no leaks in the system" he was adamant that we either spend several thousand dollars having them clean the air handler and replacing some maintenance Parts such as the capacitor, cleaning the fan, and replacing the evaporator coil which involves evacuating the coolant, cutting out the evaporator coil from the copper lines and resetting a new evaporator coil in its place. Alternatively we were offered the option to replace the outdoor condenser and the indoor Handler with some modifications being made to the ductwork to improve return air for approximately $9,000. I disassembled the air handler and cleaned the fan and had a technician from another local company come out and look at the system. they disassembled and cleaned the evaporator coil without having to cut the lines and then rechecked the pressures at the condenser and found the improvements in aiflow had raised pressures at the condenser and solved our freezing problem, he also took the time to evaluate our duct work and while not optimal for an older house the system setup is quite common and should be more than sufficient for the requirements of the air handler furthermore they offered to help us find appropriate filters for the returns to prevent the evaporator coil from getting clogged in the future and advised on appropriate filters to use at the air handler. they evaluated the condenser and found that it was no louder than normal and in good working order. How *long* it stays working... we'll see EDIT: after having a discussion with the owner Matt, I understand his point of view about wanting to remove the coil to clean it to prevent potential liability for damage to the lines that looked likely to occur. The options that he gave us a replacing components versus replacing the entire system were reasonable and allowed us to pick from within our interests and budget. It was not high pressure sales pitch or anything like that. but as always folks, if money is tight a second opinion on such a big project never hurts.Posted on Kristopher Herring2025-09-14Trustindex verifies that the original source of the review is Google. These guys are professional, and truly do everything to provide the best service. Very knowledgeable and not afraid to spread that knowledge with you. Matt is an excellent guy and I look forward to having more work done soon!Posted on Pamela Olivio2025-09-10Trustindex verifies that the original source of the review is Google. Very professional and works very good and cleans up. Would recommend them very highly.Posted on Eric Eyink2025-09-02Trustindex verifies that the original source of the review is Google. Thermostat Heating and Cooling were awesome to work with. Did exactly what they said they were going to do when they said they were going to do it. Highly recommend them for any HVAC needs.Posted on Sydney Anne2025-08-26Trustindex verifies that the original source of the review is Google. A big thank you to Matt and his crew! They were a pleasure to work with -- friendly, professional, informative, and efficient. Great customer service, work was done well and quickly, and all at a reasonable price.Posted on Lloyd Hicks2025-08-20Trustindex verifies that the original source of the review is Google. Fast and friendly service,diagnosed the problem in 10 minutes.Same day service tooPosted on Bob Schloemer2025-08-17Trustindex verifies that the original source of the review is Google. Excellent service from TH&C! Our A/C wasn't working when we arrived at Norris Lake and had guests for the weekend. Matt took the time on a Saturday to get our A/C working. Highly recommend.
Our installation process is designed to be straightforward and stress-free for homeowners across northeast Tennessee. We start by evaluating your home’s cooling requirements, checking your existing ductwork, and determining the right size unit for your space. Correct sizing matters because an oversized unit cycles on and off too frequently, while an undersized unit struggles to cool your home properly.
Once we have your measurements and understand your preferences, we prepare the installation area and remove your old equipment responsibly. Our technicians then install the new AC unit following manufacturer guidelines and local building codes. We connect all electrical components, refrigerant lines, and thermostat wiring, then charge the system and test its performance across multiple cooling cycles.
For homeowners exploring alternative cooling options, we also offer ductless AC installation for homes without existing ductwork or those looking to cool specific zones more efficiently.
We diagnose and fix cooling issues quickly, so you stay comfortable without long wait times.
Every system we install or service is chosen to fit your home’s size and cooling needs.
We’re proud to serve northeast Tennessee with dependable service and long-term customer relationships.
We’ve built our service approach around what homeowners actually need: clear communication, fair pricing, and quality work that holds up over time. Every job follows the same trusted steps from start to finish.
We present clear options and an up-front price so you can make the right call with full confidence — no pressure and no surprises.
Our certified technicians install your system to manufacturer specification and verify full performance before we leave the job site.
We check in after the install to confirm everything is running smoothly and answer any follow-up questions you may have.
From routine maintenance to emergency repairs and full system installations, we offer a complete range of heating and cooling services. Click any service below to learn more.
Northeast Tennessee’s challenging winter conditions demand reliable heating solutions that can withstand the region’s mountain climate and temperature fluctuations. Our comprehensive heating services encompass everything from traditional gas furnace installation to modern heat pump installation systems designed for optimal efficiency in the Appalachian foothills. We understand that heating costs can significantly impact your budget during the harsh winter months, which is why we specialize in high efficiency furnace installation options that reduce energy consumption while maintaining consistent comfort. Our experienced technicians are well-versed in the unique challenges posed by the region’s elevation changes and weather patterns, ensuring your heating system operates reliably when you need it most. From emergency repairs during unexpected cold snaps to planned system upgrades, we provide complete heating solutions tailored to northeast Tennessee’s specific climate demands. Whether you’re dealing with an aging system in an older mountain home or planning a new installation for a modern residence, our heating expertise covers all residential and light commercial applications throughout the tri-cities area and surrounding communities.
As northeast Tennessee’s premier HVAC specialists, we provide comprehensive climate control solutions that address the region’s unique seasonal challenges. Our full-service approach combines heating, ventilation, and air conditioning expertise to create comfortable indoor environments year-round, regardless of the dramatic temperature swings common to the Tennessee Valley. We excel in smart thermostat installation and HVAC maintenance programs designed to optimize system performance while reducing energy costs. The mountainous terrain and varying elevations throughout our service area require specialized knowledge of air pressure differences and humidity control, making professional HVAC inspection services essential for system longevity. Our technicians understand how the region’s clay soil and seasonal moisture patterns affect indoor air quality, which is why we also offer air scrubber installation to maintain healthy indoor environments. From routine tune-ups to complete system overhauls, we ensure your HVAC investment performs efficiently throughout northeast Tennessee’s diverse weather conditions, helping you maintain comfort while managing operational costs effectively.
When your furnace fails during northeast Tennessee’s unpredictable winter weather, immediate professional intervention becomes critical for both comfort and safety. Our specialized furnace repair services address the most common issues affecting heating systems in the region, from furnace not turning on repair to complex furnace heat exchanger repair situations. The area’s frequent power fluctuations and seasonal humidity changes can cause various mechanical problems, including faulty ignition systems and blower motor failures. We maintain fully stocked service vehicles to handle emergency furnace repair calls throughout the tri-cities region and surrounding mountain communities. Our diagnostic expertise extends to both gas furnace repair and electric systems, ensuring we can restore heat quickly regardless of your furnace type. Many older homes in the region still rely on furnaces that require specialized knowledge and hard-to-find parts, which our experienced technicians can source and install efficiently. We understand that furnace breakdowns often occur during the worst weather conditions, which is why we prioritize rapid response times and carry comprehensive replacement parts for all major furnace brands serving northeast Tennessee households.
Northeast Tennessee’s hot, humid summers put tremendous strain on air conditioning systems, making professional repair services essential for maintaining indoor comfort during peak cooling season. Our comprehensive AC repair expertise covers everything from minor issues like AC refrigerant recharge to major component failures requiring AC compressor repair. The region’s high humidity levels and frequent afternoon thunderstorms create challenging operating conditions that can lead to various system malfunctions, including drainage problems and electrical issues. We specialize in diagnosing and resolving AC not cooling repair situations that commonly occur when systems struggle against the area’s intense summer heat and elevated moisture levels. Our 24/7 emergency AC repair service ensures you’re never left without cooling during critical periods. From addressing airflow problems caused by the region’s pollen-heavy environment to repairing storm-damaged outdoor units, we understand the specific challenges facing air conditioning systems in the Tennessee Valley. Our rapid response capability and extensive parts inventory mean we can restore your cooling system quickly, helping you avoid the discomfort and potential health risks associated with prolonged exposure to excessive heat and humidity.
Get answers to the most common questions about our HVAC services. Still have questions? Reach out to our team — we are happy to help.
Reliable service, honest pricing, and certified technicians — here’s what sets our team apart and why customers come back to us year after year.
A properly sized unit cools every room evenly, avoiding hot spots and cold drafts throughout your home.
When your AC matches your home’s square footage and insulation, it doesn’t need to overwork, helping you save on energy costs.
Oversized systems cycle on and off too often, while undersized ones run constantly. Both lead to faster wear and tear.
Correctly sized units remove humidity effectively, keeping your indoor air more comfortable during northeast Tennessee’s humid summers.
Proper sizing means less strain on the compressor and other key components, minimizing breakdowns and repair costs.
Have a question or need to schedule service? Fill out the form below and a member of our team will reach out to you with next steps.