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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 estimateGoodman Furnace Repair in Marietta: What to Know First
Goodman furnace repair in Marietta typically runs $150 – $700 depending on the part that failed, and most repairs are completed same-day once we diagnose the issue. We’re an independent Goodman service provider, not a corporate call center, which means the technician who shows up at your door in Marietta is the same person who fixes your furnace. If your Goodman is blowing cold air, short-cycling, or making a sound it never made before, call (762) 240-5599 and a live person answers, day or night.
This page is written for Goodman owners in Marietta who want a straight answer on what’s wrong, what it costs, and who to call. No brand fluff, no manufactured urgency. Just the details that matter when your heat quits in January.
How Goodman Products Fail – and How We Fix Them
- GMSS and GMES single-stage models: failed hot surface ignitors. These two single-stage lines are everywhere in Marietta’s 1970s and 1980s subdivisions, and their ignitors are a known wear item. The silicon nitride element simply burns out after 7 – 10 years of cycling. Symptom: the inducer motor kicks on, you hear the gas valve click, but no flame. We replace the ignitor with an OEM-compatible unit and test the flame sensor while we’re in there, because it’s usually not far behind.
- GMVC96 two-stage variable-speed models: pressure switch tripping on cold mornings. Marietta’s damp, cool winter air plays a role here. The GMVC96’s pressure switch tube can collect condensation, especially if the furnace sits in an unconditioned crawlspace or garage. The switch reads a blocked vent and the furnace refuses to fire. We clear the tube, verify venting slope, and replace the switch only if it’s actually failed, which saves you a parts charge you didn’t need.
- GCVC9 and GMVC9 series: blower motor modules quitting without warning. These modulating furnaces use an ECM blower motor, and the module that controls it is a frequent point of failure around the 9 – 12 year mark. You’ll notice weak airflow, then nothing. A full motor-and-module replacement is pricey, so we test the module separately first. Sometimes the fix is a $200 module, not a $900 motor.
- Goodman’s standard 80% furnaces: flame rollout from a dirty secondary heat exchanger area. This isn’t a defect; it’s a maintenance reality. Goodman’s 80% AFUE units run hot, and if the blower wheel has never been pulled and cleaned, airflow drops, the heat exchanger overheats, and the rollout switch trips. We pull the blower assembly, clean the wheel, and check the heat exchanger for hairline cracks, which matters more as these units age past 15 years.
- GDVM and GME series (discontinued, still in service): aging control boards and failed draft inducers. Goodman hasn’t made these models in years, but Marietta homes still run them. Control boards on these older units develop cold solder joints, causing intermittent ignition failures that look like a gas supply problem. We diagnose the board by testing voltage at the gas valve during the ignition sequence rather than guessing. OEM boards are getting scarce, so we’ll talk honestly with you about whether a quality aftermarket board makes sense or if the furnace is telling you it’s time.
Styles & brands we work with







Our Goodman Furnace Repair Process
Victor Mancini and our crew follow a process that hasn’t changed in twenty years because it works. Here’s what a Goodman repair call looks like from your first phone call to the moment we shake your hand and leave:
- 1
You call and a person answers. Not a recording, not a call-back queue. We ask what the furnace is doing, what sounds you’re hearing, and what the thermostat is showing. Victor’s rule is simple: tell him what the system is doing, and he’ll tell you exactly what it needs, no guesswork, no runaround.
- 2
We show up in the window we gave you. Uniformed, background-checked, and driving a marked truck. You know who’s walking through your door.
- 3
We diagnose before we quote. We test the ignitor, the flame sensor, the gas valve, the pressure switch, and the control board. We don’t replace parts on a hunch. Once we know the failure, we write the price down and hand it to you. That price doesn’t change at the door, ever.
- 4
You approve the work, and we fix it. On a Goodman, we prefer OEM or OEM-spec parts for anything touching the gas valve, ignitor, or control board. For blower motors and capacitors, a quality aftermarket part often makes more sense, and we’ll tell you why before we install it.
- 5
We test the full heating cycle three times. Ignition, flame signal, blower ramp-up, and shutdown. We check for CO at the supply registers and verify the venting is drafting properly. Then we clean the work area, and we mean it. The furnace closet should look better than when we got there.
- 6
You get the 365-Day Done Right Promise in writing. Before we leave, you’ll have a written guarantee that covers the repair for a full year. If it fails, we come back and fix it at no charge. No fine print, no prorated nonsense.
See the difference
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After
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AfterWhat Goodman Furnace Repair Costs in Marietta
Every Goodman furnace repair in Marietta falls somewhere in this range, and the price you’re quoted is the price you pay. Here’s what move the numbers:
- Ignitor replacement: $150 – $280, parts and labor included.
- Flame sensor cleaning or replacement: $150 – $250. Cleaning often solves it; replacement only when the porcelain is cracked.
- Pressure switch replacement: $180 – $320.
- Gas valve repair or replacement: $250 – $600.
- Blower motor or module replacement: $300 – $700.
- Control board replacement: $250 – $550.
- Heat exchanger crack (repair where safe, or replacement guidance): $400 – $700 for the diagnostic and repair effort, or an honest conversation about whether a new furnace is the smarter money.
What drives cost is the part itself and how accessible the furnace is. A crawlspace unit in a tight corner of a Marietta ranch takes longer than a garage-mounted unit in a newer East Cobb build. We quote the same whether it’s Tuesday afternoon or 2 a.m. on a holiday, because the overtime is our problem, not yours. Estimates are free, and the written price arrives before any work begins. Call (762) 240-5599.
Why Marietta Homeowners Call Cold Harbour Heating and Air Marietta for Goodman Work
Most of our calls come from neighbors referring neighbors, and we’d rather earn the next one than chase the last one. We’ve been doing HVAC work across the Southeast since before some of our technicians were born, and we’ve served Marietta long enough to know its houses the way a mechanic knows a car that’s been in the family for years. Goodman furnaces show up constantly in this market, and we know their quirks the way we know the traffic on Whitlock Avenue, which is to say, intimately.
We work on Goodman every week, but we also service Carrier, Trane, and Lennox, along with five other major brands. When a furnace is too far gone and we’re talking replacement, we’ll size the new system and give you a fixed written price with a set install date, not vague promises. The 365-Day Done Right Promise applies to every repair we make, and it’s written down before we leave. That’s the whole job. If you want a straight answer on your Goodman, call us at (762) 240-5599.
Goodman Furnace Repair FAQs
No. As an independent Goodman service provider, we perform repairs using OEM or OEM-spec parts and document everything, so your Goodman manufacturer warranty remains intact as long as the work is done correctly. The warranty on the repair itself is covered by our 365-Day Done Right Promise, which is separate and written down. Call (762) 240-5599 if you’re unsure whether a specific repair might affect your coverage, and we’ll tell you straight.
In most cases, same day. We keep our service area tight and staffed so a no-heat call in Marietta doesn’t wait until tomorrow, because a house without heat in January isn’t an inconvenience, it’s a health risk for anyone inside. Call (762) 240-5599 and a live person will tell you exactly when a technician can be there.
If your Goodman is under 12 years old and the repair is under $700, repair almost always makes sense. If the heat exchanger is cracked on a unit that’s 15 or older, or if you’re looking at a third major repair in two years, we’ll tell you honestly that replacement is the better money, and we’ll quote both options without pressure. The decision is yours, and we’ll lay out the numbers so you can make it with your eyes open.
Not for us. Goodman is one of the most common furnace brands in Cobb County, and we keep common failure parts on our trucks, including ignitors, flame sensors, pressure switches, and capacitors. If a part needs to be ordered, we’ll tell you upfront and give you a firm timeline, not a shrug. Call (762) 240-5599 and we’ll check before we even send a truck if you’d like to know availability today.
Then you call us, and we come back free. The 365-Day Done Right Promise covers every Goodman repair we make for a full year. If the same repair fails inside that year, we return and correct it at no charge. That’s not a bedside manner promise; it’s in writing before we leave your house.
Written by Victor Mancini, Owner, Cold Harbour Heating and Air Marietta at Cold Harbour Heating and Air Marietta, serving Marietta and nearby areas.