AC repair
Furnace & heating
Heat pumps
Ductless mini splits
Carrier
Trane
GoodmanSeasonal tune-up and full diagnostic on your Carrier, Trane, or Goodman system - readings shown to you before any repair is proposed
Diagnosis first, numbers second - you approve the repair price before a single part goes in.
Get your free estimateFast, Reliable Furnace Repair Across Acworth
Furnace repair in Acworth typically runs $150 – $700, with most jobs completed the same day we diagnose the problem. If your heat is out on a cold night, call (478) 662-5175 and a live person answers, not a phone tree. We know Acworth’s neighborhoods, its housing stock, and the specific ways its furnaces fail, so we arrive ready to fix the actual problem rather than guess at it.
Acworth homeowners deal with a particular set of furnace issues: builder-grade equipment from the 1990s and 2000s, flex duct in hot attics, and lake humidity that never quite leaves the air. That means a “no heat” call here often isn’t a dead furnace at all. It’s a tripped limit switch from sagging duct, or a rusted heat exchanger that’s been dripping on for years. We diagnose for the root cause, write you a price before any work starts, and explain what we found in plain language.
Key Takeaways
- Furnace repair in Acworth runs $150 – $700, with heat pump repair at $150 – $650 and tune-ups at $80 – $200.
- Every repair comes with a written guarantee. If it fails within 365 days, we return free under our 365-Day Done Right Promise.
- We service all major brands: Trane, Lennox, Goodman, Rheem, Carrier, and more.
- You’ll know exactly who’s coming to your door. We send your technician’s name and photo before arrival, and they show a photo ID badge at the door.
- Call (478) 662-5175 any time. A live person answers 24/7, including holidays.
Styles & brands we work with







Why Brandt HVAC Co Marietta Is Acworth’s Preferred Furnace Repair Company
Acworth residents tend to know their neighbors and expect straight answers. We work the same way. Our Furnace Repair team arrives in uniform, background-checked, and badged. Before we ring your bell, you’ll have a text or email with the technician’s name and photo. That’s the Threshold Verified standard we built the company around, and it matters whether you’re home alone, have young kids, or just don’t want to open the door to a stranger you weren’t expecting.
We’ve fixed furnaces in Brookstone, Bentwater, and throughout Acworth for long enough to know what the original tract-home equipment does as it ages. Homeowners call us because we don’t upsell replacement when a repair makes sense, and we don’t quote a number over the phone and change it at the door. You get a written price before any work starts, every job, no exceptions. Devin Marlowe leads our team with that discipline, and it shows in how our Acworth customers talk about us.
When your furnace quits on a 30-degree night in January, waiting isn’t an option. We dispatch to Acworth quickly, and because we carry common parts for Trane, Lennox, Goodman, and Rheem systems on our trucks, most repairs finish in one visit. You shouldn’t have to sleep in a cold house because a part had to be ordered from across the country.
Heat Pump Repair in Acworth
Heat Pump Repair is a core part of what we do in Acworth, because so many homes here were built with heat pump systems that handle both cooling and heating. In winter, the heat pump runs in reverse to pull warmth from outside air, and when temperatures drop below freezing, the furnace or electric strips take over. The problems we see most often in Acworth are failed reversing valves, low refrigerant, and defrost control boards that stop working, especially on original 10 SEER units from the 1990s and 2000s.
Heat pump repair in Acworth runs $150 – $650. What you pay depends on the part. A failed capacitor is on the low end. A reversing valve replacement or refrigerant recharge sits higher. Either way, you’ll see the exact price in writing before we touch the system.
Frozen Coils and Clogged Filters
In Acworth subdivisions like Bentwater, a frozen coil in winter happens more than people expect. The outdoor unit ices over, the heat pump can’t pull heat, and the system clicks into auxiliary heat while your electric bill climbs. Often the root cause is a dirty filter or low airflow inside the house, not the outdoor unit itself.
Defrost Board and Reversing Valve Failures
When a defrost board quits, the outdoor coil ices up and the system locks out. When a reversing valve sticks, the heat pump tries to cool the house in January. Both are common on the original equipment in Acworth’s 1990s tract homes, and both are repairable without replacing the whole system.
Heating Repair in Acworth
Heating Repair in Acworth covers more than the furnace itself. When a house won’t get warm, the problem might be the gas valve, the blower motor, the thermostat, the ductwork, or the heat exchanger. We trace the whole heating path before we quote anything, because replacing a blower motor won’t fix a sagged flex duct that’s choking airflow.
Heating repair in Acworth runs $150 – $700. An ignitor replacement sits on the lower end. A blower motor or gas valve lands higher. A cracked heat exchanger is the most serious diagnosis you’ll hear, and we’ll show you the crack with a camera before we discuss what it means for repair versus replacement.
Limit Switch Trips from Duct Problems
In Acworth’s slab-on-grade homes, flex duct in unconditioned attics sags over time. That raises static pressure, and the furnace’s high-limit switch trips during long run cycles on the coldest nights. The furnace shuts down, then restarts, then shuts down again. A homeowner might think the furnace is dying when the real problem is a kinked duct run.
Ignitor and Gas Valve Repairs
Most modern furnaces use a hot surface ignitor, and they do wear out. If your furnace clicks on but the burner never lights, the ignitor is the first thing we check. Gas valve failures are less common but more dangerous if ignored, so we always check gas pressure and connections as part of any heating repair.
Trusted Brands We Service in Acworth
We service every major residential brand you’re likely to have in an Acworth home, including Trane, Lennox, Goodman, and Rheem. Because so many Acworth houses still run their original builder-grade equipment, we keep common replacement parts for those brands stocked on our trucks. That means fewer second trips and less time waiting with no heat. We don’t push one brand over another. We fix what’s in your house, and we tell you honestly when a repair no longer makes sense.
See the difference
Before
After
Before
AfterCommon Furnace Repair Problems We See in Acworth Homes
- Rusted secondary heat exchangers under coil drip pans. In many Acworth tract homes, the evaporator coil sits directly above the furnace in a tight closet or attic. Years of condensation dripping off that coil corrodes the heat exchanger below, a failure pattern that starts as a no-heat call and ends with a camera inspection showing rust-through.
- Short-cycling in mild winter weather. When an original furnace in Acworth gets replaced without a proper load calculation, oversized tonnage causes the system to start and stop too often in our mild winters. That stresses the heat exchanger every cycle and shortens its life.
- Return-air chases shared with water heater closets. Builder-grade installations in Acworth often pull return air from a chase that also vents the water heater. Poor airflow and moisture from that configuration put extra strain on the blower motor and can pull combustion byproducts into the living space if the negative pressure gets bad enough.
- Tripped limit switches from sagging attic duct. Flex duct in unconditioned attics above Acworth’s slab foundations sags, kinks, and separates over the years. The furnace can’t move enough air, the limit switch trips, and the house never gets warm on the coldest nights even though the furnace runs constantly.
Pricing for Furnace Repair in Acworth, GA
Here’s what furnace repair costs in Acworth, based on the work we actually do in this market:
| Service | Typical Price Range |
|---|---|
| Furnace Repair | $150 – $700 |
| Heat Pump Repair | $150 – $650 |
| Tune-Up | $80 – $200 |
Your final price depends on the part and the labor involved. An ignitor replacement is quick and usually lands near the bottom of the range. A gas valve or blower motor replacement costs more. A cracked heat exchanger can be the single most expensive repair, and we’ll always show you the crack and explain your options before you decide. Every quote is written, fixed, and in your hands before any work begins. Call (478) 662-5175 for a free estimate.
We Also Serve Cities Near Acworth
Our technicians also handle Furnace Repair in Acworth and surrounding communities, including Kennesaw, Woodstock, Marietta, and Powder Springs. If you’re just outside Acworth and your furnace quit, call us anyway. We’ll tell you honestly whether we can reach you today.
Serving Acworth, GA - Our Local Coverage Area
We’re based in the Acworth area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Furnace Repair in Acworth
Short-cycling in mild weather is usually an oversized furnace, and it’s common in Acworth tract homes where the original equipment was sized by rule of thumb instead of a load calculation. The furnace heats the house too fast, shuts off, and starts again minutes later. Below freezing, the heat demand is big enough that even an oversized furnace runs longer cycles, so the problem hides. The fix isn’t always a new furnace. Sometimes a two-stage thermostat or airflow correction solves it. Call (478) 662-5175 and we’ll diagnose it properly.
Lake humidity plays a role, but the bigger issue in Acworth is the installation. Many original furnaces here have an evaporator coil directly above them in a cramped closet, and condensation drips onto the heat exchanger for years. Rust-through at year 7 or 8 is exactly what we see in those setups, especially in the 1990s and 2000s subdivisions around Lake Allatoona. The good news is that if the heat exchanger is still under warranty, we’ll help you confirm registration and file the claim. Call (478) 662-5175 and we’ll walk you through it.
Running the fan constantly in winter won’t add moisture to your Acworth home. It just moves the same dry air around. In summer, constant fan keeps air moving to help with that lake-humidity feel, but in winter the blower motor runs more hours and wears out faster, especially on original 10 SEER systems. If dry air is the problem, a humidifier is the actual fix. We can install one, and we’ll tell you exactly what it costs before we do anything.
The SEER rating applies to cooling efficiency, not furnace repair directly. But it tells us you’re running original builder-grade equipment from a 1990s or 2000s build, which means the furnace half of that system is likely at or past its expected service life. When we repair a furnace paired with a 10 SEER heat pump, we look at the whole system, not just the broken part, because that equipment all ages together. You don’t have to replace everything today, but you should know what’s coming. We’ll give you an honest assessment, not a pressure pitch.
We check static pressure first. In Bentwater and similar Acworth subdivisions, flex duct in unconditioned attics sags and kinks over time, which raises static pressure and trips the furnace’s limit switch during long run cycles. The furnace runs, shuts down, runs again, and the house never fully warms. Last February we had a no-heat call in Brookstone where a blower motor capacitor had drifted to half its rated microfarads. The board was sending voltage but the motor couldn’t start under load. We replaced the capacitor and verified static pressure was still within spec. That’s the kind of diagnosis that separates a real fix from a new blower motor you didn’t need. Call (478) 662-5175 and we’ll find the actual problem.
Written by Devin Marlowe, Owner at Brandt HVAC Co Marietta, serving Acworth and surrounding communities.