Top-rated independent heating and cooling across north Georgia and the southern Appalachians
HVAC Repair Across Six States
If the AC is blowing warm air, the furnace is cycling on and off, or one room never gets comfortable, we repair it. STM Heating & Air handles air conditioning repair and heating repair for homes in Alabama, Georgia, Kentucky, North Carolina, South Carolina and Tennessee. Call us or send 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
What is your system doing?
Choose the closest match, or call and describe what the system is doing.
An independent HVAC service company covering air conditioning repair, heating repair, HVAC installation and tune-ups.
AC Repair
Air conditioners blowing warm, short-cycling or refusing to start
Furnace Repair
Furnaces with no heat, short cycling or a locked-out control board
Heat Pump Repair
Heat pumps that will not heat, stick in defrost or run nonstop
AC Installation
New central air, replacements and ductless installations
Furnace Installation
New gas and electric furnaces, replacements and upgrades
Ductwork Repair
Leaking ducts, weak airflow and rooms that never get comfortable
HVAC Maintenance
Seasonal tune-ups for cooling and heating systems
Duct Cleaning
Air duct, vent and register cleaning
Thermostat Installation
Smart thermostats, replacements and zoning controls
Mini-Split Repair
Ductless mini-splits and multi-zone systems
Indoor Air Quality
Air purifiers, humidifiers, dehumidifiers and ventilation
Independent HVAC company vs the big names
| 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.Quick answers before you call
What can I safely check before calling for HVAC repair?
Check the thermostat batteries and settings, look for a tripped breaker, change a dirty filter, clear leaves and grass clippings from around the outdoor unit, and confirm supply vents are open. Stop there. Anything involving gas, refrigerant or high voltage needs a technician on site.
Do you handle both AC repair and heating repair?
Yes. We do air conditioning repair in summer and heater repair and furnace repair through the cold months, including heat pumps and dual-fuel systems that switch between electric and propane. It is the same equipment and the same ductwork, so one crew covers both.
I smell gas near my furnace. What do I do?
Leave the building right away and take everyone with you. From outside, call 911 or your gas utility. Do not flip switches or go back in. Once the utility has made the home safe, call us and we will inspect the heating system.
Why is one room hotter than the rest of the house?
Usually airflow, not the unit. A duct may be crushed or disconnected in the crawlspace or attic, a return may be undersized, or a damper may be closed. We measure airflow room by room and trace the duct run before recommending anything.
Which areas do you cover?
We serve homeowners in Alabama, Georgia, Kentucky, North Carolina, South Carolina and Tennessee. Coverage varies by day and by how far out we are booked, so call or send the quote form with your address and we will tell you honestly when we can be there.
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.
Coverage
Small faults get expensive on their own schedule
A house that will not hold temperature usually gets worse, not better. If your AC is struggling or the heat is not keeping up, reach out and describe what it is doing. We cover homes across the region and will tell you what we find. Call us or use the quote form.
- A real person answers
- Open 7 days
- Written quotes
- All major brands
- Gas & electric
Rather not call? Get a free quote →