Commercial refrigeration service across northeast Tennessee keeps restaurants, grocery stores, cold storage facilities, and other businesses running without costly downtime. ThermoSTAT Heating & Cooling brings trained technicians and proper diagnostic equipment to every commercial refrigeration call in the area. When your walk-in cooler fails or your reach-in unit stops cooling, fast service matters — and our team responds. Whether you run a busy kitchen in northeast Tennessee or manage storage in Campbell County, we have the skills to get your refrigeration back online.
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 approach to commercial refrigeration service in northeast Tennessee follows a systematic process designed to restore your equipment and protect your inventory.
First, our technician performs a full visual inspection of the condensing unit, evaporator coil, metering device, and connecting lines. We check for physical damage, corrosion, loose connections, and any signs of previous repairs that may have been completed incorrectly.
Next, we connect gauges to measure refrigerant pressure on both the high and low sides of the system. This tells us whether the charge is correct and whether any restrictions exist in the sealed system. We also check amp draw against manufacturer specifications to evaluate compressor health.
Electrical components get tested next — the contactor, capacitor, hard start kit, and motor windings all come under scrutiny. Any failing parts are identified before they cause a complete breakdown. We examine defrost timers, drain lines, and condensate removal systems to rule out secondary issues.
Once the diagnosis is complete, we walk the business owner through what we found, what it will cost to fix, and what happens if the problem is left alone. No work begins until approval is given. For issues affecting inventory safety, we offer priority scheduling and fast turnaround on necessary parts.
For businesses that need ongoing support, we also provide commercial HVAC maintenance programs that keep refrigeration and cooling equipment in top shape year-round. If your equipment has suffered a sudden failure, our commercial HVAC repair team handles emergency calls across northeast Tennessee with same-day response when available.
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 handle everything from sudden temperature drops in the Appalachian foothills to ice storms that sweep through the region. Our comprehensive heating services ensure your home stays warm and comfortable throughout the coldest months. We specialize in all heating system types, from traditional gas furnace installation to modern heat pump installation that works efficiently in our moderate climate zones.
The diverse terrain of northeast Tennessee, from Johnson City’s urban areas to rural mountain communities, presents unique heating challenges that require experienced professionals. Our certified technicians understand local building codes and energy efficiency requirements specific to Tennessee. We also offer innovative solutions like radiant heat installation for homes in mountainous areas where traditional ductwork installation may be challenging. Whether you need furnace replacement for an aging system or want to upgrade to a high-efficiency model, we provide personalized recommendations based on your home’s specific needs, local utility costs, and regional climate patterns.
Managing indoor comfort across northeast Tennessee’s varied elevations and microclimates requires comprehensive HVAC expertise that goes beyond basic heating and cooling. Our full-service approach addresses the unique challenges faced by homeowners from the Tri-Cities area to remote mountain properties. We provide complete system design, installation, and maintenance services that account for regional factors like humidity fluctuations, seasonal temperature swings, and the area’s mixed heating and cooling demands.
Modern HVAC technology offers incredible opportunities for energy savings and improved comfort, especially important given Tennessee’s rising utility costs. Our team specializes in smart thermostat installation and heat pump repair services that maximize efficiency year-round. We also focus on indoor air quality improvements through air scrubber installation and whole house humidifier installation, addressing the dry winter air common in our mountain region. Regular HVAC maintenance is crucial in northeast Tennessee’s dusty, pollen-heavy environment, helping prevent costly breakdowns and extending system lifespan while maintaining optimal performance.
When your furnace fails during a northeast Tennessee winter, quick and reliable repair service becomes essential for your family’s safety and comfort. Our experienced technicians understand the urgency of heating system failures, especially during the region’s unpredictable winter weather patterns that can bring sudden freezing temperatures to both valley communities and mountain homes. We’re equipped to handle all furnace types and ages, from older systems in historic East Tennessee homes to modern high-efficiency units.
Common furnace issues in our area often stem from the region’s variable climate and seasonal debris that can affect system components. Our comprehensive diagnostic approach addresses everything from furnace flame sensor replacement to more complex furnace heat exchanger repair. We also provide emergency furnace repair services for those critical situations when your system fails unexpectedly. Whether you’re dealing with furnace not heating repair or strange noises from your system, our team responds quickly with fully stocked service vehicles, ensuring we can complete most repairs on the first visit and restore warmth to your northeast Tennessee home.
Northeast Tennessee’s hot, humid summers put tremendous strain on air conditioning systems, making reliable repair services crucial for maintaining comfort during peak season. From the sweltering heat of Kingsport’s industrial areas to the more moderate but still challenging conditions in mountain communities, our region’s diverse climate zones create unique cooling demands. Our certified technicians are trained to diagnose and repair all types of AC problems quickly and effectively.
The combination of high humidity, seasonal storms, and heavy pollen loads common to East Tennessee can cause various air conditioning issues throughout the cooling season. We specialize in addressing AC refrigerant recharge needs and AC compressor repair, two of the most common problems in our climate. Our rapid response includes emergency AC repair services for those unbearable summer days when your system fails. We also handle complex issues like AC leak repair, ensuring your system operates efficiently while managing the moisture challenges inherent to Tennessee’s summer climate. Our goal is to restore your comfort quickly while providing long-term solutions that prevent future breakdowns.
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.