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Diagnosis first, numbers second - you approve the repair price before a single part goes in.
Get your free estimateCarrier Furnace Repair in Alpharetta: What to Know First
Carrier furnace repair in Alpharetta typically runs $150 – $700 depending on the part that failed, and most jobs are completed the same day we diagnose them. We’re an independent Carrier service provider, which means we fix your furnace without waiting on manufacturer authorization or working through a corporate script. The price goes in writing before a wrench turns, and every repair is guaranteed for a full year. If you’re in Alpharetta and your Carrier furnace is acting up, call (229) 537-2086 and tell us what it’s doing.
How Carrier Products Fail – and How We Fix Them
Carrier builds solid furnaces, but after enough heating seasons in Georgia, certain patterns show up. Here’s what we see most often on service calls across Alpharetta:
- Infinity series ignition failures. The Carrier Infinity 96 and Infinity 98 use a hot surface ignitor that gets brittle after years of cycling. When it cracks, the gas valve opens but nothing lights, and the control board locks the furnace out after three attempts. We replace the ignitor with an OEM-spec part and verify the flame sensor is reading clean before we leave.
- Performance 80 and Comfort 80 pressure switch faults. These are the most common Carrier furnaces in Alpharetta’s older subdivisions, and their pressure switches fail when the inducer motor starts pulling weak. The symptom is a furnace that fires, runs three minutes, then shuts off with a pressure switch code. A less careful tech replaces the switch and hopes. We test the inducer’s actual draft pressure first, because a weak inducer will kill a new switch the same way it killed the old one.
- Infinity communicating thermostat lockouts. The Infinity control system is smart, but it records faults and sometimes refuses to restart until the code is cleared manually. Homeowners see an error number and no heat, even though the furnace itself is fine. We clear the fault, then run the system through its startup sequence to find the underlying trigger rather than just resetting and driving away.
- Condensing furnace drain clogs. High-efficiency Carrier models like the Infinity 98 MNV produce condensate, and in Alpharetta’s humid winters, the drain line can grow algae and back up. The furnace shuts down on a blocked drain safety. We blow the line clear and, where the install allows, add a small condensate treatment tablet so it drains through the rest of the season.
- Blower motor failures on 90%+ units. The ECM blower motors Carrier uses on variable-speed models are efficient but expensive to replace. When they fail, the furnace runs but won’t push air, and the limit switch eventually trips. We diagnose the motor versus the control module separately, because replacing the module costs a fraction of replacing the whole motor, and honest diagnosis at this step saves hundreds.
Styles & brands we work with







Our Carrier Furnace Repair Process
- 1
You call, a person answers. Not a voicemail tree. You tell us the symptom, we schedule a window, and a background-checked, uniformed tech arrives inside it.
- 2
We listen, then we test. Marco Benitez’s rule on every Carrier job: “Tell me what it’s doing, and I’ll tell you what it needs – no guesswork, no markup on confusion.” We work from your description, then verify with actual diagnostic readings.
- 3
We show you the failure. You’ll see the cracked ignitor, the corroded flame sensor, the failed pressure switch. We explain what it does and what happens if it’s not fixed.
- 4
You get the price in writing. Before any work starts, you get a fixed price for the repair. No range, no “we’ll see once we get in there.” The number on the paper is the number you pay.
- 5
We fix it with the right part. Where warranty coverage or reliability matters, we use OEM Carrier parts. Where a quality aftermarket part performs identically for less, we tell you that too and let you decide.
- 6
We test the full cycle, not just the replaced part. The furnace runs through a complete heat cycle. We check temperature rise, verify the burner flame, confirm the safety switches are all reading correctly, and clean the work area before we leave. Then you get the written guarantee in your hand.
See the difference
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AfterWhat Carrier Furnace Repair Costs in Alpharetta
Most Carrier furnace repairs in Alpharetta land between $150 and $700. Here’s how common jobs break down:
- Flame sensor cleaning or replacement: $150 – $250
- Hot surface ignitor replacement: $200 – $350
- Pressure switch replacement: $180 – $320
- Blower motor replacement: $450 – $700
- Gas valve replacement: $300 – $600
- Heat exchanger repair or replacement: $600 – $1,500+ (we’ll be honest if replacement makes more sense)
The price moves based on the part, the age of your specific Carrier unit, and whether it’s a communicating Infinity system or a standard single-stage Comfort model. You’ll always know the number before we start. Call (229) 537-2086 for an exact quote – the estimate is free.
Why Alpharetta Homeowners Call Dalton Heating & Air Alpharetta for Carrier Work
We’ve been working under The Garrison Standard since 2003, and it’s not a slogan. It’s a written set of rules every job follows: arrive inside the stated window, price in writing before starting, do the job by the book, leave the site clean, and stand behind the work for a full year. If a repair fails inside that year, we come back at no charge. That’s the 365-Day Done Right Promise, and it applies to every Carrier furnace we touch in Alpharetta.
Our techs are factory-trained on nine major brands, including Carrier, Trane, and Lennox. That matters when a home has mixed equipment, or when a Carrier part is backordered and we need to advise you honestly on an equivalent. Marco Benitez has been in Georgia field work for years, including neighborhoods around Windward, and he knows the Alpharetta housing stock. He’s also the one who coaches youth baseball on weekends, so he understands exactly what it means when your heat quits on a cold Tuesday night in Milton or Crabapple. The answer is the same: you call, we show up, the price is in writing, and the repair is guaranteed. (229) 537-2086.
FAQs
Carrier’s standard parts warranty runs 10 years if the unit was registered within 60 days of installation, and 5 years if it was never registered. If the heat exchanger fails inside 10 years on a registered unit, Carrier typically covers the part under its limited lifetime heat exchanger warranty. As an independent Carrier service provider, we can look up your unit’s warranty status by serial number before we quote any repair, so you know what’s covered and what isn’t. Call (229) 537-2086 and we’ll check it from the office.
Most Carrier furnace repairs in Alpharetta are scheduled same day or next day, and our phones are answered by a live person 24/7. If your furnace quits on a cold night, call (229) 537-2086 and you’ll speak to someone who can route a tech to you, not a voicemail queue.
If the repair cost is under $500 and your Carrier furnace is under 12 years old, repairing almost always makes sense. If the heat exchanger is cracked and the unit is over 15 years old, replacement starts to look smarter because that’s a $1,000+ repair going into a furnace that’s already near end of life. We’ll give you the repair number and the replacement number side by side, in writing, and we don’t push either direction. Call (229) 537-2086 for an honest assessment.
We use OEM Carrier parts on warranty-covered repairs and on critical safety components like gas valves, pressure switches, and heat exchangers. On non-critical parts where a quality aftermarket equivalent performs the same for less money, we tell you the trade-off and the price difference before ordering anything. You decide with full information, in writing, before the work starts.
It won’t cost you anything. Every repair we do carries a written guarantee for a full year. If the same issue comes back inside those 365 days, we return at no charge and make it right. That’s the 365-Day Done Right Promise, and it’s part of The Garrison Standard on every Carrier furnace we service in Alpharetta and the surrounding metro.
Written by Marco Benitez, Owner, Dalton Heating & Air Alpharetta at Dalton Heating & Air Alpharetta, serving Alpharetta and nearby areas.