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Before
AfterAC Replacement in Marietta, GA
AC replacement in Marietta typically costs between $6,500 and $14,500 for a full system swap, with most 3-ton mid-efficiency units landing around $8,000 to $10,500 installed. The price depends on your home’s square footage, ductwork condition, efficiency rating (SEER2), and whether you’re replacing just the condenser outside or the full system including the indoor air handler. Halden Heating and Air Marietta gives you a written price before any work starts, so you’ll know the exact number before we ever pick up a tool. Need help deciding between repair and replacement? Start with our AC Repair & Installation page to understand both options, or call us at (229) 514-0545 and we’ll talk it through.
Older AC systems in Marietta face a specific set of challenges: brutal July humidity, pollen-heavy springs that clog coils, and summer runtimes that push compressors hard from May through September. When issues arise, our AC repair installation services can help assess whether repair or replacement is the right path. When a 12 to 15-year-old unit starts leaking refrigerant or tripping breakers regularly, replacement usually beats repair. Andre Fuller and the team at Halden Heating and Air Marietta walk you through the numbers honestly, with no pressure to replace something that still has life in it.
When You Need AC Replacement
Not every AC problem means full replacement. But certain symptoms in Marietta’s climate make replacement the smarter financial move. Here are the signs we tell homeowners to watch for:
- Your system is 12 to 15+ years old and needs a major repair. Once a compressor or condenser coil fails on a unit that age, you’re often spending 30-50% of replacement cost on a machine with maybe two summers left.
- R-22 refrigerant (Freon) is leaking. R-22 has been phased out since 2020. In Marietta, remaining stock is scarce and expensive. If your older unit uses R-22, recharging it now costs more than it should, and replacement with a modern R-410A or R-454B system is usually the right call.
- Your energy bills keep climbing. Degraded compressors and dirty, aging coils force your system to work harder. Homeowners in East Cobb and West Marietta routinely see 20-30% energy-bill reductions after replacing a 15-year-old unit with a modern SEER2-rated system.
- Uneven cooling between rooms. If the upstairs stays warm while the downstairs freezes, your system may be undersized or deteriorating. Newer units pair better with zoning and variable-speed blowers.
- Frequent repairs in a single season. Two or more service calls in one Marietta summer usually signals the end of useful life. At $150-$500 per repair, that math gets bad fast.
- Strange noises or burning smells from the air handler. Grinding, rattling, or a musty burning odor can indicate blower motor failure or electrical issues, both of which signal the system is wearing out.
If any of these sound familiar, call (229) 514-0545 and we’ll send a technician to assess your system honestly. If it’s repairable, we’ll tell you. If replacement makes more sense, we’ll show you the numbers.
Our AC Replacement Process
Replacing an AC system is a big decision, and our process is built to remove the guesswork. Here’s exactly what happens when you work with Halden Heating and Air Marietta:
- Book your visit online or by phone. You get a confirmed appointment and a live arrival time you can track to the door, not a four-hour window. Our tech is background-checked, uniformed, and arrives when we say they will.
- We assess your current system and home. We measure square footage, inspect ductwork, check insulation levels, and look at your current equipment’s age and condition. This isn’t a one-size-fits-all quote, it’s a system designed for your house on your street in Marietta.
- You receive a written, locked-in price. Before any work begins, you get a full written quote with equipment model numbers, labor, and any ductwork or electrical changes included. No door-step surprises, no add-ons halfway through the job.
- We install and test the new system. Our team handles the full swap: outdoor condenser, indoor coil, refrigerant lines, and thermostat pairing. We test airflow, check refrigerant charge, and verify cooling performance before we leave.
- You get before-and-after photos. The Relay Visibility Guarantee means you see what was done, including photos of the old equipment removed and the new system in place. Every completed job also comes with our 365-Day Done Right Promise in writing.
Have questions about how long installation takes, or whether your existing ductwork will work with a new system? Call us at (229) 514-0545 and we’ll answer directly. No phone trees, no voicemail tag. A real person picks up the line, 24/7.
AC Replacement Pricing in Marietta
We believe in putting real numbers in front of homeowners. Here’s what AC replacement costs in Marietta right now, based on the equipment brands we install and the typical home sizes in the area:
| System Type | Typical Home Size | Cost Range Installed |
|---|---|---|
| 14 SEER2, single-stage (Goodman or Rheem) | 1,200 – 1,800 sq ft | $6,500 – $8,500 |
| 16 SEER2, single-stage (Lennox or Trane) | 1,800 – 2,400 sq ft | $8,000 – $10,500 |
| 17-18 SEER2, two-stage (Trane or Lennox) | 2,400 – 3,200 sq ft | $10,500 – $13,000 |
| 20+ SEER2, variable-speed (Lennox or Trane) | 3,000+ sq ft | $12,500 – $15,000+ |
What changes the price? Four things mostly. First, your home’s square footage and ductwork condition, because a 3-ton system for a 1,400-square-foot ranch is far cheaper than a 5-ton system for a 4,000-square-foot Colonial in Indian Hills. Second, efficiency rating, since higher SEER2 ratings cost more upfront but cut monthly energy bills, which matters when your AC runs nonstop from June through September. Third, brand, with Trane and Lennox typically running 10-15% above Goodman or Rheem for the same capacity. Fourth, any electrical or duct modifications your system needs to meet current Marietta code requirements.
Every quote from Halden Heating and Air Marietta includes the full scope in writing before work starts. Estimates are free. Call (229) 514-0545 and we’ll schedule a time to measure your home and give you a real number.
FAQs – AC Replacement
How much does AC replacement cost in Marietta, GA?
AC replacement in Marietta typically costs between $6,500 and $14,500 installed, with most mid-range 3-ton units running $8,000 to $10,500. Your actual price depends on home size, existing ductwork, SEER2 rating, and brand choice. Call (229) 514-0545 for a free in-home assessment and a written, no-obligation quote.
How long does AC replacement take?
Most AC replacements in Marietta take 4 to 8 hours for a straightforward swap, while full system replacements with ductwork modifications can run 1 to 2 days. We’ll give you a realistic timeline in writing before the job starts, and our tech’s arrival is trackable live so you’re never waiting on an open-ended window. For an honest timeline on your specific home, call (229) 514-0545.
Is it cheaper to repair or replace my AC?
As a rule of thumb, if your system is under 10 years old and the repair costs less than $500, repair it. If it’s 12 to 15+ years old and needs a compressor, condensing coil, or repeated refrigerant recharges, replacement usually costs less per year of remaining comfort. We’ll never push a replacement you don’t need. Andre Fuller built this business on straight answers, and if a repair makes more sense, we’ll say so.
What brands do you install for AC replacement?
We install and service Trane, Lennox, Goodman, and Rheem systems, among others. Brand matters less than proper sizing and installation quality, which is why we measure your home and inspect ductwork before recommending any specific unit. For a recommendation built around your home’s needs, call (229) 514-0545 and we’ll walk you through the options.
Can you replace my AC today?
In many cases, yes. We handle emergency AC replacements in Marietta and Cobb County, and we can often install a new system within 24 to 48 hours of your call when the heat demands it. A live person answers our phone 24/7, so if your system is dead and you need it replaced fast, call (229) 514-0545 now and we’ll get you on the schedule.
Do you offer financing for AC replacement?
While we focus on transparent upfront pricing, we understand an AC replacement is a major purchase. Many Marietta homeowners pair our written quotes with home improvement financing through their bank or credit union. We’ll give you a detailed, line-item written quote you can take to your lender, and we’ll never pressure you into a purchase before you’re ready. Call (229) 514-0545 for your free estimate.
Written by Andre Fuller, Owner at Halden Heating and Air Marietta, serving Marietta.