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5 Best Furnace Repair Services Knoxville, TN

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Written By Callie Marsalisi|Last Updated: February 05, 2024

It's important to have access to reliable furnace repair services to keep your home comfortable. In this guide, we'll go over common furnace issues and show you where to turn for help with both unexpected heating emergencies and regular maintenance. The top heating, ventilation, and air conditioning (HVAC) servicers in Knoxville, Tennessee, can help keep your heating and cooling running smoothly. If you find out that you need a full system replacement, we also have some picks for top furnace brands.

5 Best Furnace Repair Companies in Knoxville

GoHero Home Services Logo

GoHero Home Services

Based on 1,217 customer reviews.

Services Offered

MaintenanceIndoor Air QualityFurnace InstallationDuctlessInspectionDuct CleaningFurnace RepairAc InstallationSmart Home Integration


  • Free quote
  • Informative resources
  • Clear pricing policy
6283 Clinton Hwy, Knoxville, TN 865-224-8687 goheronow.com
Pioneer Heating & Air Logo

Pioneer Heating & Air

Based on 1,673 customer reviews.

Services Offered

Ac RepairDuct CleaningFurnace InstallationDuctlessMaintenanceInspectionFurnace RepairFiltrationIndoor Air QualityEmergency ServicesAc Installation


  • Clear pricing policy
  • Informative resources
  • Free quote
4604 Mill Branch Ln, Knoxville, TN 865-351-1125 pioneercomfort.com
Fair Heating and Air LLC Logo

Fair Heating and Air

Based on 45 customer reviews.

Services Offered

Ac InstallationFurnace RepairIndoor Air QualityInspectionFurnace InstallationMaintenanceEmergency ServicesAc Repair


  • Free quote
  • Clear pricing policy
  • Informative resources
1233 Maryville Pike, Knoxville, TN 865-809-4568 fairheatingandairtn.com
Karns Mechanical Services Logo

Karns Mechanical Services

Based on 111 customer reviews.

Services Offered

MaintenanceVentilationDuctlessAc InstallationInspectionFurnace InstallationFurnace Repair


  • Clear pricing policy
7532 Oak Ridge Hwy #1527, Knoxville, TN 865-661-0178 karnsmechanicalservices.com

More Local Hvac Companies

Grissom Heat & Air

User Reviews: 4.2/5 

6612 Brackett Rd
Knoxville, TN 37938

Pol's Heating and Cooling

User Reviews: 4.6/5 

10313 Cogdill Rd #7
Knoxville, TN 37932

Standard Air Conditioning Co.

User Reviews: 4.6/5 

10700 Dutchtown Rd
Knoxville, TN 37932

True Comfort Heat and Air, LLC

User Reviews: 4.7/5 

111 Bogart Ln A
Maryville, TN 37804

Melton Heating and Air Conditioning

User Reviews: 4.6/5 

828 Clinch Ave
Clinton, TN 37716

Cook's Comfort Systems, Inc.

User Reviews: 5/5 

110 Union Valley Rd
Oak Ridge, TN 37830

EZ Heating & Cooling, LLC

User Reviews: 4.7/5 

430 Hilltop Dr
Lenoir City, TN 37772

Budget Heating & Air Conditioning

User Reviews: 4.5/5 

950 Churchview St
New Market, TN 37820

Lynch Heating & Air Conditioning

User Reviews: 4.5/5 

5270 Cub Cir B
Morristown, TN 37814

To share feedback or ask a question about this article, send a note to our Reviews Team at reviewsteam@thisoldhousereviews.com.

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Facts about Knoxville
Average Min Temp Percentile:81.4%
January Average Min Temp:30.7°F
Climate Zone:Mixed-Humid
Average Energy Cost:$0.08/kWh
Median Year Houses Built:1951
Average Annual Snowfall:3.9"

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Services Offered by Furnace Repair Companies

Furnace repair companies offer a number of services to keep your furnace working efficiently and effectively. We review common services below.

Repair and Maintenance

A timely repair restores the furnace's function, extends its life span, and optimizes energy efficiency. Furnace repair providers can diagnose and repair any issues with your furnace, such as a malfunctioning thermostat, clogged air filter, or broken blower motor. Qualified HVAC technicians examine and fix individual problems such as possible gas leaks, damaged heat exchangers, malfunctioning thermostats, or faulty ignitions. Furnace repair companies can also complete routine HVAC maintenance to avoid unnecessary breakdowns. This can include inspecting and cleaning your furnace, replacing air filters, lubricating moving parts, and making sure all components work properly.


HVAC companies can also install a new furnace if yours is beyond repair, or if you're planning on upgrading to a more energy-efficient model, like a heat pump. Skilled technicians will first assess your home's layout and heating needs. Then, they recommend the most suitable furnace model based on your budget and home requirements. Your HVAC technician can integrate your new system with your existing air ducts and thermostat, and they should follow industry safety protocols and standards for proper furnace replacement and connection. After installation, your technician will complete one last inspection to ensure your furnace runs efficiently.


We recommend scheduling an inspection with a furnace repair company if you notice your furnace failing to turn on. During the inspection, a technician will look at each of the furnace's components to identify potential issues. Inspections typically include cleaning and replacing air filters, testing the thermostat's accuracy, inspecting the burner and ignition system, examining the heat exchanger for cracks or damage, and checking for any gas or fuel leaks. The technician verifies the heating system's efficiency and safety, making necessary repairs or adjustments. Regular yearly furnace tune-ups ensure peak performance, help avoid possible breakdowns, and promote safe living during colder months.

Emergency Services

Emergency furnace repair services are there to help with unexpected malfunctions, breakdowns, or other safety concerns. Many providers offer these 24/7 services to get your system up and running promptly any time of the day or night. When your furnace fails in extreme weather conditions, and you're unable to open windows for fresh air, it can pose serious discomfort and health risks from poor indoor air quality. Though emergency services will cost more than scheduled services, it’s worth it to protect your health.

Factors To Consider When Choosing a Local Knoxville Furnace Repair Service

There are several important considerations for selecting a local Knoxville furnace repair service. We’ve detailed them below.

  • Cost: Look for transparent and competitive pricing, and make sure you find a company that offers all the services you need. Compare several Knoxville furnace repair companies. Avoid ones with extremely low rates, as they may employ low-quality workmanship or subpar replacement parts.
  • Guarantees: Guarantees and warranties provide peace of mind in case problems come up post-repair. Trustworthy furnace repair providers should stand behind their work with warranties or guarantees for both their workmanship and any replacement parts.
  • Licensing: In Tennessee, your HVAC contractor must obtain certification from your local city or municipal government. Hiring a properly licensed and certified furnace repair provider is essential to ensure that your technician is qualified to handle furnace repairs safely and effectively.
  • Qualifications: Inquire about a company's training policies and the experience of its technicians. Companies that offer ongoing training tend to have technicians that are up to date on the latest repair techniques. You want a company that employs well-trained technicians with experience working with various furnace makes and models.
  • Reputation and reviews: Customer testimonials and other online reviews can give you an idea of a provider's reputation and focus on customer satisfaction. Look for overall positive reviews and experiences, and pay attention to the way it addresses complaints and negative feedback.

How Much Does a Furnace Repair Cost?

The cost of furnace repair depends on multiple factors, including HVAC unit type, the extent of the damage, and the price of replacement parts. The average furnace repair costs $416, but the final price depends on the situation. Below are some common furnace repairs and their average costs.

  • Broken thermostat: $78–$390
  • Cleaning: $47–$62
  • Cracked heat exchanger: $1,559–$2,729
  • Damaged blower bearings: $23–$117
  • Damaged blower belt: $23–$86
  • Filter change: $31–$117

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Frequently Asked Questions About Furnace Repair in Knoxville

How often should I have my furnace serviced?

You should have your furnace serviced once a year (or more often if needed) to keep it running efficiently and safely. A simple maintenance step you can take is changing the furnace filter annually.

Will a home warranty cover a furnace?

Most home warranties cover furnaces, but plans and services will vary by company. Learn more using our guide to best home warranties for furnace coverage.

How can I tell whether my furnace needs repairs?

Signs that your furnace needs repairs include a yellow pilot light, increased energy bills, uneven heating, and strange noises. A professional can inspect your furnace and determine whether it’s time for a full furnace replacement.

What should I do if my furnace breaks down in the middle of winter?

You might need emergency repair services if your furnace breaks down mid-winter. Many HVAC repair providers offer 24/7 emergency services to get your furnace back up and running.

How can I prevent the need for furnace repairs?

Regular furnace maintenance, such as cleaning and replacing air filters, helps prevent the need for repairs. Having your HVAC system serviced at least once a year is also critical for catching potential issues before they become major problems.

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