Carrier HVAC Service Nationwide

Why Marietta Homeowners Choose Carrier HVAC

We provide independent Marietta Carrier service and repair throughout the area, and the work we do on Carrier equipment is different from what you’ll get from a generalist shop. Our technicians work on every Carrier platform sold in Cobb County over the past two decades, from builder-grade Comfort series to variable-speed Infinity systems, so we fix them without leaning on factory support or authorized-partner scripts. We’re not affiliated with or authorized by Carrier, and that’s worth saying plainly, because it means our recommendations are driven by what’s actually wrong with your system, not what a manufacturer program tells us to sell. If your Carrier furnace or AC is acting up in Marietta, call (478) 662-5175 and we’ll give you a written price before any work starts.

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Why Trust Brandt HVAC Co Marietta for Your Carrier HVAC?

Carrier builds good equipment, but like every brand, it has quirks that only show up after you’ve worked on a few hundred of them. Our owner, Devin Marlowe, learned the trade at Los Angeles Trade-Technical College and has spent the better part of three decades working on HVAC systems across the South. He and his crew have logged more service calls in the Kennesaw Avenue corridor near Marietta Square than he can count, and he knows the quirks of the older homes in that part of town as well as anyone. When a Carrier Infinity thermostat throws a communication code or a Comfort 13 condenser trips its thermal overload, we’ve seen it enough times to know the fix without guessing.

We also protect you before we ever set foot in your home. Every Brandt HVAC technician is background-checked and identity-verified under the Threshold Verified standard. You get our technician’s name and photo before the visit, and they show a photo ID badge at the door. If someone arrives who you were not told to expect, that visit is on us and we make it right. That matters in Marietta, where a lot of our customers are home alone, raising young kids, or simply want to know who’s walking through their front door. Tell me what it’s doing, and I’ll tell you what it needs – no guesswork, no upsell. That’s how Devin puts it, and it’s how we operate on every Carrier call.

Common Carrier HVAC Problems We Fix in Marietta

Carrier equipment is reliable, but Marietta’s climate and housing stock create specific failure patterns. Here are the five most common Carrier problems we see in this area.

• Error 178 on Infinity and Evolution communicating thermostats. The Infinity 26 and older Infinity 21 systems use a four-wire ABCD communication bus between the thermostat and the indoor control board. When that communication drops, the thermostat throws Error 178 and locks out cooling entirely. Most techs replace the board. Half the time, the real issue is a chafed or corroded wire, often behind the blower door or where the wire run passes through a chase. We test continuity before we spend your money on a board. This is the single most misdiagnosed Carrier failure we see in Marietta.
• ZP and ZPV series Copeland scroll compressors tripping thermal overload. The builder-grade Comfort 13 and Comfort 14 units run single-stage Copeland scroll compressors. When the outdoor condenser coil gets packed with oak and pine pollen, which is brutal in Marietta from late March through May, head pressure climbs and the compressor overheats. It trips its internal thermal overload and the fan keeps running while the compressor sits dead. A good coil cleaning usually restores it. Skip the cleaning and keep resetting it, and you’ll be buying a new compressor or a new unit.
• Secondary heat exchanger corrosion in 90%+ Carrier furnaces. The Infinity 98 modulating gas furnace and other 90%+ AFUE Carrier models condense flue gas to extract extra heat. That condensate is acidic and has to drain through a trap. When the trap clogs, which happens often in Marietta because our crawl spaces stay damp, the condensate backs up into the secondary heat exchanger. Over time, that causes corrosion and eventually a heat exchanger failure. The fix early on is simple: clean the trap and flush the drain. Wait too long and you’re looking at a heat exchanger replacement or a new furnace.
• ECM blower motor module failures after summer storms. Performance series air handlers and many Infinity systems use variable-speed ECM blower motors. They’re efficient, but the control module attached to the motor is sensitive to power surges. Marietta’s afternoon thunderstorms from June through August produce exactly the kind of voltage spikes that kill these modules. The motor itself is often fine; the module fails. We replace the module when possible, which costs a fraction of a full motor replacement.
• R-22 systems running low on refrigerant in older Marietta homes. A lot of the 1960s through 1990s ranch and split-level homes in Marietta still have original Carrier systems running on R-22. The refrigerant itself was phased out years ago, and what’s left is expensive. A slow leak in an R-22 system isn’t just an inconvenience; it costs real money every time you top it off. We’ll find the leak, show you where it is, and give you an honest number for repair versus replacement. Most of the time, when an R-22 Carrier system has a significant leak, replacement is the better financial decision.

Carrier Parts & Our Repair-vs-Replace Approach

For Carrier repairs, we lean on OEM parts when the fix affects system control or safety. That means factory Carrier boards for Infinity and Evolution systems, factory gas valves, and factory inducer motors. These parts have to communicate correctly with the rest of the system, and aftermarket substitutes cause more problems than they solve. For wear items like capacitors, contactors, and pressure switches, we install commercial-grade aftermarket parts when they’re proven equal or better for Marietta’s heat and humidity. The decision comes down to one question: what’s the most reliable part for your system, not what’s cheapest to put on a truck.

Repair versus replace is usually an honest conversation about the compressor and the coil. If a compressor has failed and the coil is 12 years or older, we usually recommend replacing the outdoor unit rather than putting a new compressor on an old coil. The coil’s been losing capacity for years, and mismatching a new compressor with an old coil is a recipe for another failure. If your system is under 8 years old and the failure is isolated, a repair makes sense and we’ll back it with a written guarantee. If it fails within the guarantee period, we return at no charge under our 365-Day Done Right Promise. Call (478) 662-5175 and we’ll give you a straight answer on your specific unit.

Our Carrier Service Process – Step by Step

1. 1
   Diagnosis, written down. We arrive, introduce ourselves by name, and start with a full diagnostic on your Carrier equipment. We check the communicating connections on Infinity systems, measure refrigerant pressures, inspect the heat exchanger if it’s a furnace issue, and document what we find. You get a written price for the repair before any work begins, every time.
2. 2
   The repair or install. Once you approve the written price, we get to work. We use OEM Carrier parts for control and safety components, and proven aftermarket parts for wear items. We stock common Carrier-specific parts in our Marietta-area trucks so most repairs are done in one visit.
3. 3
   Testing after the fix. For Infinity and Evolution systems, we verify full communication and staging before we leave. On a gas furnace, we check combustion readings and verify the heat exchanger isn’t compromised. On an AC repair, we run the system through a full cycle and check the temperature drop across the coil. We don’t call it fixed until it’s actually fixed.
4. 4
   A written guarantee. Every Carrier repair includes a written guarantee that states exactly what it covers and for how long. If the repair fails within the guarantee period, we return at no charge under the 365-Day Done Right Promise. No argument, no additional charge.

Carrier Products We Service & Install in Marietta

Our technicians work on the full Carrier residential lineup sold in the Marietta area over the last two decades, and we also provide Carrier repair in Mableton. That includes the variable-speed Infinity 26 air conditioners and heat pumps, the two-stage Performance 17 series, the builder-grade Comfort 13 and Comfort 14 split ACs, and the Infinity 98 modulating gas furnace. We also service and install Carrier ductless mini splits, which are a good fit for older Marietta ranch homes with no existing ductwork or with rooms that never cool evenly. We keep common Carrier replacement parts on our local trucks, including communicating system components, contactors, capacitors, and blower motor modules, which means less waiting on parts when your AC is down in July.

We also handle Carrier heat exchanger inspections and replacements, especially on the 90%+ efficiency furnaces that are common in Marietta homes built since the 1990s. Heat exchanger work has to be done carefully, because a cracked exchanger can leak carbon monoxide into your home. We test every furnace heat exchanger we service, and we’ll show you photos of what we find before we recommend a repair or replacement.

We Also Service These Brands

Carrier isn’t the only brand we work on. We service Trane and Lennox equipment as well, along with Goodman, Rheem, York, Daikin, Bryant, and American Standard. That matters because you should never have to switch HVAC companies when you replace a system and choose a different brand. If you have a Carrier AC paired with a Trane furnace, or a Lennox heat pump in a rental property, we handle all of it.

Carrier HVAC Service Pricing in Marietta

FAQs – Carrier HVAC Service in Marietta

Book Your Carrier Service in Marietta, GA

If your Carrier HVAC is acting up in Marietta, call (478) 662-5175 and you’ll talk to a live person, 24 hours a day, 7 days a week. No phone trees, no voicemail. We’ll get a technician out to you, tell you who’s coming before they arrive, and give you a written price before any work begins.

Written by Devin Marlowe, Owner at Brandt HVAC Co Marietta, serving Marietta since 2003.