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 Marietta
Furnace repair in Marietta typically runs $150 – $700, and most common failures like ignitor or capacitor replacements can be diagnosed and fixed the same day. When your heat cuts out on a 28-degree January night in a 1970s split-level off Whitlock Avenue, you need someone who answers the phone and shows up. Brandt HVAC Co Marietta sends background-checked, uniformed technicians to homes across Marietta, from the established neighborhoods around Historic Marietta Square to the ranch-heavy streets near Kennesaw Mountain. Call (478) 662-5175 and a live person answers, 24/7.
Why Brandt HVAC Co Marietta Is Marietta’s Preferred Furnace Repair Company
We know Marietta’s housing stock. The city is packed with 1960s-1980s ranch and split-level homes, many still running their original ductwork and heat pumps. That means the failures we see here are different from what a tech finds in Atlanta’s newer infill. Our Furnace Repair team works on these houses every week, and we know what to check first in a 1970s split-level with high static pressure and a blower motor that has been working too hard for 30 years.
Every technician who comes to your door is introduced by name and photo before arrival, wears a uniform, and shows a photo ID badge at the door. That is the Threshold Verified standard, and it exists because we understand something about our customers: opening the door to a stranger is a genuine concern, whether you are home alone, managing young kids, or retired and cautious. We tell you exactly who is coming. If someone shows up you were not told to expect, that visit is on us.
Our Marietta customers see response times measured in hours, not days, for emergency repairs. Dispatch and scheduling coordinate from the brand’s Atlanta office, but the crews serving Marietta work locally, which means shorter drives and faster arrivals. Live phone coverage runs 24/7. No voicemail, no callback queue.
Styles & brands we work with
Gas Furnace Repair in Marietta
Gas Furnace Repair in Marietta homes usually involves ignition systems, gas valves, thermocouples, or limit switches, and the work typically runs $150 – $700 depending on the part and the furnace’s age. Marietta’s older ranch homes, especially those built before 1990, often have furnaces that have cycled through thousands of heating seasons. That repetition wears down ignitors and gas valves in predictable ways. When our techs arrive at a 1970s brick ranch near Dallas Highway, they check the ignition sequence first, because a failed hot-surface ignitor is the single most common gas furnace failure in this city.
Ignitor and Gas Valve Work
A cracked ignitor or a sticking gas valve is usually a same-visit fix. We carry ignitors, flame sensors, and gas valves on the truck for most major brands, so we don’t have to leave a cold house to chase parts. Written pricing comes before any work starts. Every repair includes a written guarantee.
Heat Exchanger Repairs
Older gas furnaces in Marietta, especially those in 1980s ranches with single-pane windows and no wind shelter, develop cracked heat exchangers from repeated thermal stress. A cracked exchanger trips the rollout switch and shuts the furnace down. When we find one, we give you the repair range up front: replacement runs $500 – $700. If the furnace is past 15 years old, we will also show you the replacement math honestly, with no pressure. That is a safety item, not an upsell.
Furnace Tune Up in Marietta
Furnace Tune Up work in Marietta should happen once a year, ideally before the first hard cold snap, and it costs $80 – $200. Marietta weather does not ease into winter. It arrives in a rush, often after a stretch of 70-degree days, and the furnaces in this city have to go from idle to full load in a matter of days. That sudden demand is hard on aging systems. A tune-up catches small failures, like a weakening capacitor or a dirty flame sensor, before they strand you on a 25-degree night.
Burner Cleaning and Calibration
Our techs clean the burners, check the flame sensor, test the ignition system, and verify the gas pressure. They also measure the temperature rise across the heat exchanger to confirm the furnace is moving heat the way it should. You get a written report of what we found, with real numbers.
Static Pressure and Airflow on Older Ductwork
In Marietta’s 1960s-1980s houses, the ducts are often undersized. That raises static pressure, which makes blower motors work harder and fail sooner. During a tune-up, we measure static pressure on request and tell you honestly if your ductwork is the real problem. Our techs are not paid on what they sell, so the advice is the same whether a duct upgrade is in your plans or not.
Trusted Brands We Service in Marietta
Brandt HVAC Co Marietta services all major residential brands, including Trane, Lennox, Goodman, and Rheem furnaces. We stock common repair parts for these brands in our local service vehicles, which keeps turnaround short for Marietta homeowners. Whether your system is a 2005 Trane 80% gas furnace or a 2012 Goodman heat pump, our technicians have worked on that platform before. We do not push brand replacement. We fix what you have, when it makes financial sense to fix it.
See the difference
Before
After
Before
AfterCommon Furnace Repair Problems We See in Marietta Homes
- Heat pumps short-cycling on rural propane-backup lots. On exposed properties outside the city center, outdoor condenser coils ice over during cold snaps when drainage is poor. Short-cycling follows, and the system never satisfies the thermostat. We see this consistently on acreage lots near Kennesaw and west of Powder Springs Road.
- Cracked heat exchangers in 1980s ranches with single-pane windows. These homes lose heat fast, so furnaces cycle harder and more often. Years of thermal stress crack the exchanger, which trips the rollout switch and kills the furnace. It is a safety issue, and we flag it immediately.
- Failed capacitors after summer thunderstorms. Marietta gets violent electrical storms in July and August. Voltage spikes weaken capacitors, and months later the blower motor will not start. A capacitor replacement runs $150 – $400, and it is one of the first things we check in a furnace that won’t fire up.
- Blower motors pushing against undersized ductwork. The 1970s split-levels off Whitlock Avenue and Dallas Highway often have ductwork sized for a smaller house. The blower motor runs at high static pressure, gets hot, and fails. A blower motor replacement runs $300 – $700, but we will also tell you if the ductwork is the underlying problem.
Pricing for Furnace Repair in Marietta, GA
Furnace repair in Marietta follows a clear pattern. Simple fixes, like a capacitor or ignitor replacement, run $150 – $400. Mid-level repairs, like a blower motor or gas valve, run $300 – $700. A heat exchanger replacement lands at $500 – $700. Here is the line-item breakdown we quote in Marietta:
| Repair | Typical Marietta Price Range |
|---|---|
| Gas Furnace Repair | $150 – $700 |
| Furnace Tune Up | $80 – $200 |
| Capacitor replacement | $150 – $400 |
| Blower motor replacement | $300 – $700 |
| Heat exchanger replacement | $500 – $700 |
Every job begins with a written price before any work starts. No exceptions. The written guarantee covers every repair for 365 days. If the repair fails inside that year, we return at no charge, no argument. Call (478) 662-5175 for an exact quote. Estimates are free.
We Also Serve Cities Near Marietta
Our technicians regularly serve Smyrna, Kennesaw, Powder Springs, and Mableton, so if you are just outside Marietta, we can still reach you quickly. The same written pricing and 365-day guarantee apply everywhere we work in the area. Live phone coverage is 24/7 for all of these communities.
Serving Marietta, GA - Our Local Coverage Area
We’re based in the Marietta 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 Marietta
Marietta’s inland location away from the moderating Gulf means cold snaps arrive with little warning, and 1970s split-levels with original undersized ductwork cannot move enough air to keep up. The heat pump is often fine. The ductwork is the constraint. Our techs measure static pressure and show you the numbers before recommending anything. Call (478) 662-5175 and we will schedule a visit.
That pollen clogs the outdoor condenser coil on heat pumps, which reduces airflow and forces the system to work harder. By the time fall arrives, the system is already strained, and the furnace side inherits the wear. A spring tune-up that includes coil cleaning helps. The tune-up runs $80 – $200 and can be booked any time.
No. Short-cycling on rural propane properties, especially on exposed lots with no tree line, usually means the outdoor coil is icing over or the thermostat is misreading temperature swings. It burns extra fuel and stresses the heat exchanger. We can diagnose it in one visit. Call (478) 662-5175 for a written quote before any repair work begins.
Usually not without major changes. Furnaces are sized for the main house, and extending ductwork to an outbuilding rarely works because the static pressure and BTU load were never calculated for it. A dedicated mini-split or a properly sized unit is the better answer. We can walk through the options with you, with written pricing, before you commit.
SEER2 is the updated efficiency rating standard for cooling equipment as of 2023. It does not change furnace repair work directly, but it does affect replacement decisions. When we give you a repair quote, we also tell you honestly whether a new system makes more sense, using the current SEER2 ratings for your home’s specific size and ductwork. No sales pressure, just straight numbers.
Written by Devin Marlowe, Owner at Brandt HVAC Co Marietta, serving Marietta homes with background-checked, badged technicians and written pricing on every job since 2003.