Top-rated independent heating and cooling across Tennessee
Furnace Repair in Knoxville, TN — Book a Visit Today
A furnace that lights, runs a minute, then shuts off is telling you something specific, and furnace repair in Knoxville homes often comes down to that short cycle. We also get calls for no heat at all, a blower that runs cold, or a burner that rumbles on startup. If you smell gas or a carbon monoxide alarm sounds, get everyone outside first, then call 911 or your gas utility, and call us after. Otherwise check the thermostat batteries and the breaker, then reach out. Heating repair appointments fill quickly on the first cold snap, so call or use the quote form.
Call (888) 878-4879- Real people on the phone
- 7 days a week
- Quote in writing before any work
Taking calls until 5:00 PM ET
Common furnace faults in Knoxville homes
- The furnace blows but the air is cool Ignition failure, flame sensor, or a heat call that never completes
- It fires up, runs a minute, then quits Short cycling from a dirty flame sensor, blocked airflow or a tripped limit switch
- Nothing happens at all when I raise the thermostat Thermostat power, tripped breaker, blown low voltage fuse or failed control board
- There is a loud bang when the heat kicks on Delayed ignition or duct expansion, both worth looking at before the next cold snap
- Some rooms are freezing and the rest are fine Airflow and duct problems, an undersized blower, or a stuck zone damper
Whether you call it furnace repair, heating repair or heater repair, the work is identical and so is the quote you approve first.
Knoxville coverage
From Knoxville we also cover Farragut, Powell, Halls, Maryville, Alcoa, Lenoir City, Clinton, Oak Ridge, Seymour and Sevierville.
Furnace Repair jobs we take in Knoxville
Other repairs we do in Knoxville
- AC Repair
- Heat Pump Repair
- AC Installation
- Furnace Installation
- Ductwork Repair
- HVAC Maintenance
- Duct Cleaning
- Thermostat Installation
- Mini-Split Repair
- Indoor Air Quality
Furnace Repair in cities near Knoxville
Furnace Repair service hub → · Knoxville service directory →
Independent HVAC company vs the big names in Knoxville
| STM Heating & Air | Big-box repair chains | Handyman listings | |
|---|---|---|---|
| Quote in writing before a wrench comes out | ✓ | ✕ | ✕ |
| Phones answered by people, every day | ✓ | ✕ | ✓ |
| All major brands, gas and electric | ✓ | ✓ | ✕ |
| Independent company, nobody's quota | ✓ | ✕ | ✓ |
| Crews familiar with homes like yours | ✓ | ✕ | ✓ |
The same on every visit
The quote comes first, in writing
Covering 81 cities across Alabama, Georgia, Kentucky and 3 more.Phones answered by people
Open 7 days, 8:00 AM to 5:00 PM ET.Every major brand, gas and electric
Carrier, Trane, Lennox, Goodman and more. We are not an authorized dealer for any of them.Furnace Repair in Knoxville — quick answers
My furnace stopped overnight. How fast can someone come out?
Call us and tell us there is no heat and how cold the house is. No-heat calls get moved up the schedule, especially with children, older adults or pets in the home. We will give you an honest arrival window rather than a guess.
Is it worth repairing an older furnace?
Often yes, if the heat exchanger is sound and parts are still available. We look at age, repair history and what failed. A capacitor or ignitor is a small fix. A cracked heat exchanger is a replacement conversation, and we will say so plainly.
What does a flame sensor actually do?
It proves to the control board that a flame is present so gas keeps flowing. Once it is coated with residue it stops sensing, and the furnace shuts down within seconds of lighting. Cleaning or replacing it is one of the most common heating repair fixes we make.
I smell gas near the furnace. What should I do?
Get everyone out of the house first. Do not touch switches or the thermostat. From outside, call 911 or your gas utility and let them make the area safe. Once they clear it, call us and we will inspect the furnace and gas train.
How soon can you get to my house in Knoxville?
Call us and we will give you a real window rather than a guess. During the first hot week of summer and the first hard freeze of winter our schedule fills fast, so no-cooling and no-heat calls get sorted first. If you are waiting, check that the thermostat has fresh batteries and is set correctly, look for a tripped breaker, and swap a clogged filter. Those three things solve more calls than people expect.
How it works
- Step 1
Tell us the symptom
Call or fill in the quote form and describe what you hear, smell or feel. Warm air, short cycling, a breaker that keeps tripping. That gives us a head start on the likely cause.
- Step 2
We diagnose on site
A technician checks the thermostat, airflow, electrical connections, refrigerant performance and the outdoor unit. We work the crawlspace and the attic too, because ductwork and drainage cause more trouble than people expect.
- Step 3
You decide, then we fix it
We explain what failed, what it takes to repair it, and what we would watch next season. No work starts until you say go. Most repairs finish the same visit when parts are on the truck.
- A real person answers
- Open 7 days
- Written quote before work starts
Why homeowners call us
- Mixed heating is normal to usHeat pumps, propane furnaces and dual-fuel setups all behave differently in cold weather. We know how a heat pump should sound in the thirties and when the backup heat is doing too much of the work.
- We go under the houseRed clay crawlspaces hide crushed ducts, sweating lines and standing water. Comfort problems often start down there, not at the unit, so we look before we start replacing parts you may not need.
- Plain explanationsYou get told what broke and why, in words that make sense. If a repair is a short-term patch on an aging system, we say that out loud so you can plan instead of guessing.
- One crew, six statesWe serve homeowners across Alabama, Georgia, Kentucky, North Carolina, South Carolina and Tennessee. Same approach in every one: show up, diagnose properly, repair what needs repairing, leave the space clean.
- All major brands, gas & electricOne independent crew for Carrier, Trane, Lennox, Goodman, Rheem and more.
- Straight answersNot worth fixing? We say that out loud, and often it saves you the visit fee.
Furnace Repair in Knoxville
The longer it sits broken, the more it takes from you
Tell us the symptom, sign off on the written quote, get the machine back. Starting takes a minute.
- A real person answers
- Open 7 days
- Written quotes
- All major brands
- Gas & electric
Rather not call? Get a free quote →