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Get your free estimateCarrier Furnace Repair in Marietta: What to Know First
Carrier furnace repair in Marietta typically runs $150 – $700 depending on the component that failed, and most jobs are completed same-day once we diagnose the issue. We’re an independent Carrier service provider, which means we answer directly to you, not to a manufacturer’s warranty department. If your Carrier furnace is blowing cold air, short-cycling, or making a sound it shouldn’t, call (478) 662-5175 and you’ll get a live person, not a phone tree.

This page is for Marietta homeowners with Carrier Infinity, Performance, or Comfort series furnaces who want straight answers about what’s wrong and what it costs to fix. No brand-speak, no mystery fees. Just the truth about how these units fail and how we repair them.
How Carrier Furnaces Fail, and What We Actually See in Marietta
Over years of service calls across Marietta, including plenty of older homes near Kennesaw Avenue and Marietta Square, certain Carrier failure patterns show up again and again. Here are the five most common ones we fix:
- Ignitor failure on Carrier 58 series furnaces. The 58STA, 58DLA, and similar older Carrier models use a hot-surface ignitor that gets brittle with age. In Marietta’s humid summers, moisture in the air accelerates that wear even when the furnace sits idle all season. When it cracks, the furnace won’t light. We replace it with an OEM-spec ignitor, and the fix usually takes under an hour.
- Pressure switch chatter on Infinity systems. Carrier Infinity furnaces (the 59MN7 and 59TN6 lines) rely on pressure switches that are picky about airflow. A partially blocked condensate drain or a flue vent that’s shifted slightly can cause the switch to open and close in a way that looks like a control board problem. We’ve saved Marietta homeowners hundreds of dollars by clearing a drain line in twenty minutes instead of selling them a board they didn’t need.
- Heat exchanger cracking on high-hour Performance series units. The Carrier Performance 59TP6 is a solid furnace, but any tubular heat exchanger will stress-crack after 15-plus years of Georgia heating cycles. What we look for is a lazy yellow flame and a slight oil smell at startup. If we find a crack, we’ll show you the photo and give you an honest conversation about repair versus replacement, because sometimes the honest answer is that the furnace has done its time.
- Inducer motor bearing wear on Comfort series units. The Carrier Comfort 59SC2 and older 58CLA models sometimes develop a whining inducer motor at startup. Owners often describe it as “a small jet engine in the closet.” We replace the inducer assembly, not just the motor, so the new part does not inherit the old one’s housing wear.
- Control board voltage faults after storm surges. Marietta gets its share of storms, and Carrier control boards don’t love power dips. The 58 series boards, in particular, can throw false error codes after a brownout. We test board voltage before we ever order a replacement, because roughly a third of the “dead board” calls we get turn out to be a tripped limit switch or a loose molex connector instead.
Styles & brands we work with







Our Carrier Furnace Repair Process
- 1
You call, a person answers. At any hour, seven days a week. We ask what the furnace is doing, not just for your address. That saves us bringing the wrong part.
- 2
We tell you who is coming. Before the truck rolls, you get the technician’s name and photo. When he arrives, he shows a photo ID badge at the door. That’s the Threshold Verified standard, and it’s non-negotiable for every visit.
- 3
Diagnosis with a written price. We find the fault, explain it in plain words, and hand you a written price before any work begins. If you don’t like the number, we shake hands and go. No charge for the visit.
- 4
The right part, the right way. For warranty-sensitive components, we use OEM Carrier or factory-equivalent parts. For wear items like ignitors and capacitors, we’ll recommend the part that gives you the best value, and we’ll tell you the trade-off so the choice is yours.
- 5
The repair and the test. We fix it, cycle the furnace five to seven times, check gas pressure and temperature rise, and verify the flue is drafting properly. Then we clean up.
- 6
The written guarantee. Every repair includes a written guarantee. If the same fault returns within 365 days, we come back and make it right under our Done Right Promise. No argument, no additional charge.
See the difference
Before
After
Before
AfterWhat Carrier Furnace Repair Costs in Marietta
Here’s the honest pricing picture for the Carrier repairs we do most often:
- Ignitor replacement: $150 – $300, parts and labor included
- Flame sensor cleaning or replacement: $120 – $200
- Pressure switch replacement: $180 – $325
- Inducer motor assembly replacement: $350 – $650
- Gas valve replacement: $275 – $500
- Control board replacement: $300 – $600
- Heat exchanger replacement: $550 – $700, but we’ll be straight with you if a replacement furnace makes more sense at this price point
What moves the price is the part cost, access (attic furnaces take longer than closet jobs), and whether the unit is under warranty. A Carrier furnace under its 10-year parts warranty saves you the component cost, leaving only labor. We always check warranty status before quoting, because a lot of Marietta homeowners don’t realize their Carrier heat exchanger or gas valve may still be covered. Estimates are free, so call (478) 662-5175 and we’ll give you the exact number in writing.
Why Marietta Homeowners Call Brandt HVAC Co Marietta for Carrier Work
Plenty of HVAC companies can change a part. What we do differently is remove the guesswork from the entire experience. Devin Marlowe built Brandt HVAC Co Marietta on a simple lesson from his years in the trade: if you tell someone exactly what’s wrong, what it costs, and who’s walking through the door, they stop dreading the service call. Every technician we send is background-checked and identity-verified under the Threshold Verified standard. The price is in writing before the first tool comes out. And the 365-Day Done Right Promise means we don’t get paid to do it twice.
We service all major Carrier lines, and we also work on Trane and Lennox furnaces when a household has mixed-brand systems. That multi-brand experience matters, because we see how Carrier’s failure patterns differ from those other brands, and we know which fixes genuinely transfer and which don’t.
Frequently Asked Questions About Carrier Furnace Repair
Most Carrier furnaces carry a 10-year parts warranty if the unit was registered within 90 days of installation, and a longer heat exchanger warranty on Infinity and higher-end Performance models. We check the serial number against Carrier’s warranty database before quoting any repair, because a warranty-covered part can drop your cost to labor only.
In most cases, yes. Common repairs like ignitors, flame sensors, and pressure switches are parts we keep stocked on our trucks, and we run service calls across Marietta daily. Larger parts like an inducer assembly or control board may require a next-day visit if your specific model needs a special order.
If the repair is under $700 and the furnace is under 12 years old with a sound heat exchanger, repair usually makes sense. If the heat exchanger is cracked or the repair exceeds about 40% of a replacement furnace’s cost, we’ll tell you plainly that replacement is the smarter money. That’s the conversation no one wants, but you deserve to hear it straight.
For warranty-covered components and safety-critical parts like heat exchangers and gas valves, we use genuine Carrier or factory-equivalent OEM parts. For wear items like ignitors and capacitors, we use the part that offers the best real-world reliability for your money, and we’ll tell you which one we’re using and why.
Every furnace repair we do is guaranteed in writing for 365 days. If the same fault returns within that period, we come back and repair it again at no charge, including parts and labor. That guarantee is part of the Done Right Promise that every Brandt HVAC Co Marietta job carries.
If your Carrier furnace is acting up, call (478) 662-5175. A live person picks up, we schedule the visit, and you get the name and photo of your technician before they arrive. The estimate is free, the price is in writing, and the guarantee is simple: if it’s not done right, we make it right.
Written by Devin Marlowe, Owner, Brandt HVAC Co Marietta at Brandt HVAC Co Marietta, serving Marietta and nearby areas.