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Before
AfterAC Replacement in Marietta, GA
AC replacement in Marietta typically costs between $4,800 and $9,400 for a standard 3-ton system, with most homeowners paying around $6,500 installed. The job usually takes one full day when we’re swapping an existing system for a new one. If your air conditioner is more than 12 years old or needs a repair that exceeds half its replacement value, replacement is usually the smarter financial move. Call us at (478) 662-5175 and we’ll give you a written price before any work starts.
We handle AC replacement as part of our broader AC Repair & Installation in Marietta work, and we’re honest with homeowners about when a repair still makes sense versus when it’s time to stop feeding an aging system. Brandt HVAC Co Marietta has been replacing residential air conditioners since 2003, and we approach every estimate the same way: we measure your home, check your ductwork, listen to what you’ve noticed about comfort and utility bills, then give you a number in writing. No pressure, no vague ballparks, no surprises at the door.
When You Need AC Replacement
Not every failing AC needs to be replaced. Sometimes Capacitor Replacement or a contactor fixes the problem for under $300. But there are clear signs that replacement is the right call, and we’d rather tell you plainly than sell you a repair that won’t last.
- Your system is 12 to 15 years old and the compressor has failed. A compressor replacement on an aging unit often runs $1,800 to $3,200, and you’re still left with an old evaporator coil, old condenser, and old efficiency. In areas around Marietta Square and East Cobb, we regularly see 15-year-old Trane and Lennox units where spending repair money no longer pencils out.
- Your utility bills have climbed even though your usage hasn’t. As systems age, efficiency drops. A SEER 10 unit from 2008 uses significantly more electricity than a new SEER 16 or 18 system, and Marietta’s long cooling season means that inefficiency compounds month after month.
- You’re recharging refrigerant every year. R-22 refrigerant (the old standard) is being phased out, and refills now cost $150 to $300 per pound in the Marietta market. A system leaking multiple pounds a year is a money pit. Newer systems use R-410A or R-454B, which are more affordable to service.
- Repairs would cost more than 50% of the system’s value. When we give you an AC repair quote and that number exceeds half of what a new system would cost, we’ll tell you. That threshold is the point where replacement is the responsible financial decision.
- Hot and cold spots persist no matter what you do. If some rooms in your Marietta home never cool properly, and your ductwork has been checked, the issue may be an undersized or failing system that can’t maintain balanced airflow.
- You’re planning to stay in the home 5+ years. A new system pays for itself through lower utility costs and fewer repairs. If you’re staying put, replacement delivers the better long-term return.
Key Takeaways
- Most AC replacements in Marietta run $4,800 to $9,400 installed.
- Any system over 12 years old with a major component failure is a replacement candidate.
- Brandt HVAC Co Marietta provides a written price before any work begins, every time.
- Every AC replacement includes a written guarantee, backed by our 365-Day Done Right Promise.
Our AC Replacement Process
Here’s how AC replacement works with Brandt HVAC Co Marietta, step by step, so you know exactly what to expect from the first phone call to the final walkthrough.
- Call us and speak to a live person. Phones are answered 24 hours a day, 7 days a week. No voicemail, no callback queue. We’ll ask about your current system, the size of your home, and what you’ve been experiencing, then schedule a visit at a time that works for you. Our home page at Brandt HVAC has more on what to expect.
- Meet your technician by name before they arrive. Before the visit, you’ll receive your technician’s name and photo. When they arrive, they’ll show a photo ID badge at the door. This is the Threshold Verified standard: every technician is background-checked and identity-verified. If anyone arrives who you were not told to expect, that visit is on us and we make it right.
- We take measurements and give you options. We measure your home’s square footage, assess your ductwork, check your electrical panel, and evaluate the existing refrigerant lines. We’ll discuss two or three system options across brands like Trane, Lennox, Goodman, or Rheem, explaining the differences in efficiency, noise level, and cost in plain language.
- You receive a written price before any work starts. No exceptions, ever. We present the exact cost on paper, you read it, you sign it, and only then does the work begin. If a surprise comes up mid-job, we stop and bring it to you in writing before proceeding.
- We remove the old system and install the new one, typically same-day. Most standard replacements are completed in a single day. We handle old equipment removal, new equipment installation, refrigerant charging, and a full system startup test.
- Final walkthrough and written guarantee. We walk you through what we installed, how to operate your new thermostat, and what maintenance will keep the system running. You’ll receive a written guarantee specifying exactly what it covers and for how long. If anything fails within the guarantee period, we come back free under the 365-Day Done Right Promise.
AC Replacement Pricing in Marietta
Here’s what AC replacement actually costs in Marietta, broken down by equipment tier so you arrive informed, not surprised.
| System Tier | Typical SEER Rating | Installed Price Range (3-ton) |
|---|---|---|
| Basic single-stage | 14 – 15 SEER | $4,800 – $6,200 |
| Mid-range two-stage | 16 – 17 SEER | $6,300 – $7,800 |
| High-efficiency variable-speed | 18 – 21 SEER | $8,000 – $9,400+ |
What moves the price in Marietta specifically:
- Home size and system capacity. A 2-ton system runs lower; a 5-ton system runs higher. Most Marietta homes in the 1,800 – 2,400 square foot range need 3 to 4 tons.
- Ductwork condition. If your existing ducts are undersized or leaking, that adds cost. Older homes near the Marietta Square and in neighborhoods off Powder Springs Road sometimes need duct modifications or replacement.
- Access and installation complexity. Cramped attics, tight crawlspaces, or rooftop units in commercial-style residential buildings add labor time and cost.
- Brand and efficiency level. Goodman and Rheem tend to hit lower price points. Trane and Lennox run higher but offer stronger warranties and longer track records.
- Refrigerant type. New systems use R-410A or R-454B. If your home has old R-22 lines, they may need to be flushed or replaced, which adds to the total.
We give every homeowner a written quote before work begins. Call (478) 662-5175 for a free estimate, and we’ll come measure your home and give you real numbers on real equipment, not a vague range pulled from the internet.
FAQs – AC Replacement
How much does AC replacement cost in Marietta, GA?
AC replacement in Marietta typically costs $4,800 to $9,400 installed, depending on home size, efficiency level, brand, and ductwork condition. Most 3-ton systems land around $6,500. Call (478) 662-5175 for a free in-home estimate with a written price.
Is it cheaper to repair or replace my AC?
If the repair costs less than half the system’s value and the unit is under 10 years old, repair usually makes sense. If the unit is 12+ years old and needs Compressor Repair or a coil, replacement is usually the better financial decision because you avoid repeated repair costs and gain efficiency. We’ll give you the repair number and the replacement number side by side and let you decide without pressure.
Can you replace my AC same-day in Marietta?
In many cases, yes. Standard replacements are usually completed in a single day once equipment is on hand. If you call before 10 a.m., we can often get a technician out that same day to assess the job, and we’ll schedule installation as quickly as possible. Call (478) 662-5175 to check today’s availability.
What brands do you install for AC replacement?
We carry and install Trane, Lennox, Goodman, and Rheem, among others. Each has different strengths in price, warranty, and efficiency, and we’ll help you compare the options for your specific home rather than pushing one brand.
Do you offer a guarantee on AC replacement?
Yes. Every AC replacement from Brandt HVAC Co Marietta includes a written guarantee that states exactly what it covers and for how long. If anything fails within the guarantee period, we return at no charge under the 365-Day Done Right Promise. You’ll receive that guarantee in writing before the job starts.
What to Know Before You Call
Have your current system’s age and approximate size handy if you can. Know which rooms feel warm and which feel comfortable. Check your latest utility bill so we can compare. None of that is required for us to help you, but it speeds up the estimate. And if you’re not sure whether you need our ac repair installation services or replacement, that’s exactly what we’re here to sort out. We’ll tell you honestly, in plain language, with numbers on paper.
When you schedule with Brandt HVAC Co Marietta, you’ll know the technician’s name and face before they arrive. They’ll show a badge at the door. You’ll get a written price before any work starts. And if the job isn’t done right, we’ll make it right. That’s the whole arrangement, spelled out.
Call (478) 662-5175 today for a free AC replacement estimate in Marietta. We answer live, 24/7.
Written by Devin Marlowe, Owner at Brandt HVAC Co Marietta, serving Marietta.