Watch for these common symptoms that indicate your gas furnace needs professional attention:
If you notice any of these warning signs, turn off your furnace and call us right away. A failing gas furnace isn’t just uncomfortable—it can be a safety hazard for your household.
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 repair process starts with a thorough inspection to pinpoint the exact problem. We check the gas supply lines, test the ignition system, examine the heat exchanger for cracks, and evaluate the performance of the flame sensor and burners. For systems with persistent cycling issues, we often find that a failing furnace igniter replacement resolves the problem quickly.
Once we identify the issue, we explain your options and provide upfront pricing before any work begins. Our technicians carry common replacement parts on their trucks, so most repairs complete in a single visit. We use quality replacement parts backed by warranties, and we test your system thoroughly after every repair to ensure it runs efficiently and safely.
If your furnace is older or has multiple failing components, we’ll honestly tell you whether repair or replacement makes more sense for your situation and budget.
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 LaFollette, Jacksboro, Caryville, and Campbell County TN with dependable service and long-term customer relationships.
Campbell County’s cold winters make a working gas furnace essential for every household. Homes throughout the region rely on gas furnaces for reliable, cost-effective heating during sub-freezing temperatures that can last for days or weeks at a time.
The age of housing stock in our service area means many homes still run original furnaces from the 1990s and early 2000s. These older units work hard each winter and eventually develop the common problems we see regularly: worn igniters, dirty flame sensors, cracked heat exchangers, and failing blower motors. Our technicians know these systems well because we repair them so often across LaFollette, LaFollette, LaFollette, Jacksboro, Caryville, and Campbell County TN, Caryville, and Campbell County TN, Caryville, and Campbell County TN.
When winter storms roll through and temperatures plummet, we prioritize emergency calls from families without heat. If your furnace stops working during extreme cold, don’t wait—contact us immediately so we can restore your heating as quickly as possible.
Heating emergencies don’t wait for convenient times, especially during Campbell County’s harsh winter months when temperatures can plummet unexpectedly. Our emergency furnace repair service provides 24/7 response throughout LaFollette, LaFollette, Jacksboro, Caryville, and Campbell County TN, Caryville, and the broader region, ensuring your family stays warm and safe regardless of when your heating system fails.
Emergency situations often involve complete system shutdowns, gas leaks, carbon monoxide concerns, or electrical failures that pose immediate safety risks. Our certified emergency technicians arrive equipped with diagnostic tools, common replacement parts, and the expertise to quickly assess and resolve critical heating issues. We prioritize safety above all else, conducting thorough inspections to identify potential hazards before beginning any repair work.
Beyond immediate repairs, we often recommend follow-up services like professional HVAC inspections to prevent future emergencies and ensure optimal system performance. Many emergency calls could be prevented through regular HVAC tune-up services that identify worn components before they fail completely. Our emergency service includes detailed documentation of all repairs and recommendations for preventing similar issues in the future.
Modern gas furnaces rely on flame sensors as critical safety components that detect proper combustion and prevent dangerous gas buildup. These small but essential devices can become dirty or fail over time, causing your furnace to start briefly before shutting down—a frustrating cycle that leaves homes throughout LaFollette, LaFollette, Jacksboro, Caryville, and Campbell County TN, and Caryville without reliable heat during cold Tennessee winters.
Flame sensor issues often mimic other furnace problems, making professional diagnosis essential for accurate repairs. Our technicians use specialized testing equipment to determine whether cleaning, adjustment, or complete replacement provides the most effective solution. We understand that flame sensor problems can indicate broader combustion issues, so our service includes comprehensive burner inspection and gas pressure testing to ensure safe, efficient operation.
Flame sensor replacement typically takes less than an hour, but the precision required demands professional expertise to ensure proper positioning and electrical connections. This service pairs well with our regular HVAC maintenance programs that include annual flame sensor cleaning to prevent future failures. Many customers also benefit from furnace duct cleaning services that remove debris and improve overall system cleanliness, reducing the likelihood of sensor contamination and extending component life.
Furnace igniters have evolved significantly from traditional pilot lights to modern hot surface igniters and electronic ignition systems that provide reliable, efficient startup for today’s heating systems. Throughout the LaFollette, LaFollette, Jacksboro, Caryville, and Campbell County TN, and Caryville areas, where power fluctuations and seasonal usage patterns can stress ignition components, professional igniter replacement ensures dependable heating when you need it most.
Hot surface igniters typically last 3-5 years under normal conditions but can fail prematurely due to electrical surges, frequent cycling, or manufacturing defects. Our replacement process involves careful handling of these fragile components, proper electrical connections, and calibration to ensure optimal ignition timing. We stock various igniter types to accommodate different furnace brands and models commonly found in Campbell County homes.
Igniter replacement often presents an ideal opportunity to evaluate your entire ignition system’s performance and recommend complementary improvements. Many homeowners benefit from combining this service with smart thermostat upgrades that reduce frequent cycling and extend igniter life. Additionally, our comprehensive tune-up services include ignition system testing and adjustment that can prevent premature failures and ensure reliable operation throughout the heating season.
ThermoSTAT Heating & Cooling provides gas furnace repair throughout our full service area, including LaFollette, Caryville, and Campbell County TN.
When your furnace runs but fails to produce adequate heat, the underlying causes can range from simple thermostat issues to complex mechanical failures requiring professional diagnosis. Homes throughout Campbell County face unique heating challenges due to varying elevations, insulation levels, and architectural styles that can complicate troubleshooting efforts.
Our systematic approach to furnace heating problems begins with comprehensive system evaluation, including airflow measurement, temperature differential testing, and component inspection to identify the root cause of inadequate heating. Common culprits include dirty air filters, malfunctioning gas valves, restricted ductwork, or failing heat exchangers that prevent proper heat transfer to your home’s air supply.
Many heating problems stem from neglected maintenance or underlying airflow issues that reduce system efficiency over time. Our repair process often reveals the need for professional duct cleaning services that remove years of accumulated debris and restore proper airflow throughout your heating system. We also frequently recommend detailed HVAC inspections that identify potential problems before they escalate into complete heating failures, saving homeowners significant money on emergency repairs during peak heating season.
A furnace that won’t start represents one of the most stressful heating emergencies, particularly during Tennessee’s coldest months when reliable heat becomes essential for family comfort and safety. Our diagnostic expertise helps homeowners throughout LaFollette, LaFollette, Jacksboro, Caryville, and Campbell County TN, Caryville, and surrounding areas quickly identify why their heating systems refuse to operate.
Startup failures often result from electrical issues, safety lockouts, thermostat malfunctions, or gas supply problems that require methodical troubleshooting to resolve effectively. Our technicians arrive equipped with advanced diagnostic tools and comprehensive knowledge of both older and modern furnace control systems, enabling rapid identification of the specific component or system preventing normal operation.
Many startup problems indicate broader system issues that benefit from comprehensive evaluation beyond the immediate repair. Our service often reveals opportunities for system improvements like professional thermostat installation that prevents future control-related failures. We also frequently recommend preventive maintenance programs that include electrical connection tightening, control system testing, and component inspection designed to prevent unexpected startup failures throughout the heating season. Our goal extends beyond immediate repairs to ensure long-term reliability and peace of mind for every customer.
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 LaFollette, Jacksboro, Caryville, and Campbell County TN’s humid summers.
Proper sizing means less strain on the compressor and other key components, minimizing breakdowns and repair costs.