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Before
After
Before
AfterAC Installation in Marietta, GA
A new central air conditioning system in Marietta typically costs between $6,500 and $14,500 installed, depending on the size of your home, the efficiency rating you choose, and the condition of your existing ductwork. Most installations in Cobb County take one full day, and at Brandt HVAC Co Marietta, you’ll know your exact price in writing before any equipment is ordered or any work begins. If you’re weighing a AC Repair & Installation decision, we can help you sort out whether a repair makes sense or if a new system is the smarter money.
We install Trane, Lennox, Goodman, and Rheem systems, and we’ll recommend the one that fits your house and your budget, not the one we happen to have in the warehouse. Call us at (478) 662-5175 and you’ll talk to a live person who can schedule a free in-home estimate.
When You Need AC Installation
Sometimes the writing is on the wall. Here are the scenarios we see most often in Marietta homes, from East Cobb ranches to vinyl-sided two-stories off Powder Springs Road:
- Your compressor is dead and the system uses R-22 refrigerant. R-22 (Freon) was phased out years ago, and refilling an old system can run $150 – $300 per pound. When a 20-year-old R-22 system loses its compressor, replacement is almost always cheaper than repair over the next two summers.
- Repair costs are piling up. If you’ve spent $800 or more on repairs in the last two summers, and your system is over 12 years old, you’re likely paying to keep a dying machine on life support.
- Hot and cold spots throughout the house. This often means your system was sized wrong from the start, or your ductwork has issues. A proper load calculation (Manual J) fixes the guesswork.
- Your energy bills climb every July. A 10-SEER system from 2002 uses roughly 40% more electricity than a modern 16-SEER unit. In Marietta’s humid climate, that adds up fast.
- You’re planning to stay in the home 5+ years. You’ll recoup efficiency gains and avoid the stress of mid-August breakdowns.
- Indoor humidity stays high even when the AC runs. Oversized or failing systems short-cycle, which means they never run long enough to pull moisture out of Marietta’s muggy summer air.
If any of these sound familiar, a new installation isn’t an upsell, it’s the honest fix. And we’ll give you that answer in writing before you spend a dime.
Our AC Installation Process
We follow the same process on every job, so you always know exactly where things stand:
- Free in-home estimate and load calculation. We measure the square footage, check window orientation, inspect your ductwork, and look at your insulation levels. No guesswork, no “replace it with the same size because that’s what’s there.”
- Written proposal with flat pricing. You get the exact cost, the exact equipment model number, and the exact scope of work on paper. You approve it before we order anything. If you don’t approve it, we don’t order it.
- Installation day, with a technician you already know. Before we arrive, you get the name and photo of the technician coming to your door. When they arrive, they’ll show you a photo ID badge. That’s the Threshold Verified standard, and it’s how we do every single visit.
- Full system startup and testing. We run the system, check refrigerant charge, measure airflow, and verify the thermostat is set up correctly. We don’t leave until it’s cooling properly and pulling humidity down.
- Walkthrough and warranty paperwork. We show you the new thermostat settings, explain the filter schedule, and leave you with all warranty registration docs. Your installation carries the 365-Day Done Right Promise: if it’s not done right, we make it right.
AC Installation Pricing in Marietta
Straight numbers, because you deserve to see them before you call:
- Basic 14-SEER single-stage system (1,200 – 1,800 sq ft): $6,500 – $8,500 installed
- Mid-grade 16-SEER two-stage system (1,800 – 2,800 sq ft): $8,500 – $11,500 installed
- High-efficiency 18+ SEER variable-speed system (2,800+ sq ft): $11,500 – $14,500 installed
- Full ductwork replacement (if needed): $4,000 – $9,000 additional, depending on the home
What moves the price on any Marietta job:
- Home size and layout. A 3,000 sq ft two-story in West Cobb needs more capacity than a 1,400 sq ft ranch in Fair Oaks. Square footage, ceiling height, and window count all matter.
- Efficiency rating (SEER2). Higher SEER2 means lower monthly bills, but higher upfront cost. Most Marietta homeowners land on 15 – 17 SEER2 as the sweet spot.
- Ductwork condition. If your existing ducts are leaky, collapsed, or poorly sized, we’ll show you and quote the fix. We won’t install a new system on bad ducts and call it done.
- Electrical work. Some older Marietta homes need a panel upgrade or a new disconnect box. We identify this during the estimate, not as a surprise on install day.
Your estimate is free. Your price is written. And if we tell you a number on Tuesday, that’s the number you pay on Thursday. Call (478) 662-5175 to schedule yours.
FAQs – AC Installation
How much does AC installation cost in Marietta, GA?
A complete central AC installation in Marietta ranges from $6,500 to $14,500, with most homes falling between $8,500 and $11,500 for a 15 – 17 SEER2 system with new refrigerant lines and startup included. The single biggest variable is home size. Call (478) 662-5175 for a free in-home estimate and we’ll put an exact number in writing before any commitment.
How long does AC installation take?
Most Marietta single-family homes are completed in one day, typically 6 – 10 hours from arrival to final walkthrough. If we’re replacing ductwork or upgrading electrical, expect a second day. We’ll tell you the timeline during the estimate, not after we’ve started.
Is it cheaper to repair or replace my AC?
If your system is under 10 years old and the repair is under $800, repair usually wins. If it’s over 12 years old, uses R-22, or needs a compressor or evaporator coil, AC Replacement is almost always the better long-term money in Marietta’s heat. We’ll show you the math both ways and let you decide.
What brands does Brandt HVAC Co Marietta install?
We install Trane, Lennox, Goodman, and Rheem residential systems, and we service every major brand. The right choice depends on your budget, your home’s square footage, and how long you plan to stay in the house. We’ll recommend the one that fits, not the one that pads our margin.
Can you install an AC system tomorrow?
During peak summer in Marietta, we’re often booked 2 – 5 days out for full installations. But call us at (478) 662-5175 and ask, if the weather’s brutal and you’ve got a dead system, we’ll do everything we can to move you up. A live person answers our phone 24/7, and we’ll tell you the truth about timing.
Do you offer financing for AC installation?
Ask about financing options when you call. We’ll walk you through what’s available on current Trane, Lennox, Goodman, and Rheem systems and help you keep the monthly number where you need it to be. No fine-print games, just clear terms.
What’s included in your AC installation quote?
Everything: equipment, refrigerant lines, condensate drain, electrical disconnect, thermostat setup, pad, startup, testing, and haul-away of the old system. If it’s not in the written proposal, it’s not in the job, and we won’t add it later as a surprise line item.
Does Brandt HVAC Co Marietta pull permits for AC installation?
Yes. We handle all Cobb County permits and schedule the required inspection. You should never pay an installer to skip permits, it can come back on you during a home sale. We do it by the book, every time.
Ready to get a real number instead of a guess? Call (478) 662-5175 for AC Repair & Installation Near Me in Marietta, GA and get a free in-home estimate. You’ll get a written price from a technician you know by name, verified before they ever knock on your door.
Written by Devin Marlowe, Owner at Brandt HVAC Co Marietta, serving Marietta.