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Before
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Before
AfterAC Installation in Marietta, GA
A new AC installation in Marietta typically runs $4,200 to $9,800 depending on system size, efficiency rating, and ductwork condition, and most full-system replacements take one to two days. At Cold Harbour Heating and Air Marietta, every installation starts with a written price handed to you before any equipment is ordered, so the number you approve is the number you pay. If you’re weighing repair against replacement, our AC Repair & Installation in Marietta page walks through both sides, or call (762) 240-5599 and we’ll talk it through with you directly.
We’ve been installing and servicing air conditioning in Cobb County since 2003, as an independently owned and operated member of the Kingswell network. That means we answer to our neighbors here, not to a corporate office in another state. Victor Mancini runs this shop, and the standard he set from day one hasn’t moved: put the price in writing before the work starts, show up when we say we will, leave the job site cleaner than we found it, and back every installation with a guarantee that means something.
When You Need AC Installation
Sometimes a repair genuinely solves the problem. Other times, the numbers don’t make sense and our AC Replacement is the honest call. Here’s what pushes most Marietta homeowners toward installation rather than another patch job:
- The system is 12 years old or older and the compressor died. A compressor replacement on a unit that age can run $1,800 to $3,400, which is a big check to write for a system already past its expected service life. In neighborhoods like East Cobb and West Oak, we see R-22 systems from the mid-2000s hitting this exact wall every summer.
- The evaporator coil is leaking and the unit uses R-22 refrigerant. R-22 production stopped years ago, and remaining stock is expensive. Recharging a leaking R-22 system can cost more in a single summer than the down payment on a new R-410A unit.
- Repair costs over one season exceed 40 percent of replacement cost. If a blower motor, capacitor, and refrigerant recharge hit you for $3,200 in a single Georgia summer, you’ve spent nearly half the price of a new mid-range system. At that point we’ll tell you plainly: installation is the better money.
- Rooms at the far end of the house never cool properly. In split-level and ranches around Pope High School and Sprayberry, undersized ductwork or a unit sized for a different footprint means one side of the house stays at 78 while the thermostat reads 72. A new properly sized system with duct corrections solves it.
- You’re planning to stay in the home five or more years. A new high-efficiency system in Marietta can cut cooling bills by 20 to 30 percent compared to a 10+ year old unit. Over five or six summers, that savings recovers a meaningful chunk of the install cost.
If any of these describe your situation, call (762) 240-5599. We’ll send a technician to look at the system and give you a straight assessment. We won’t push a replacement unless the numbers support it.
Our AC Installation Process
We follow a process on every our ac repair installation services in Marietta, no matter the home size or brand going in. It keeps the work predictable and the price honest.
- In-home assessment and load calculation. A technician measures the home, checks insulation levels, window orientation, and existing ductwork. We use a Manual J load calculation rather than guessing by square footage, because a unit too large cycles off too fast to dehumidify and a unit too small never catches up in a Marietta July.
- Written proposal with three equipment options. We give you a written quote for a good, better, and best system configuration, each with the full price listed so you can compare. The price includes equipment, labor, refrigerant, line set work, disconnect, and haul-away of the old unit. Nothing gets added later at the door.
- Scheduling with a firm arrival window. We tell you the day and the window, and the crew shows up in it. If something changes, we call you before the window starts, not after.
- Installation day. The old system comes out, the new one goes in. We pull a vacuum on the line set to remove moisture and air, pressure-test the connections, and run the system through a full cycle to verify temperatures and airflow. Uniformed, background-checked technicians do all the work, and they protect floors with runners and lay down drop cloths around the work area.
- System walk-through and paperwork. Before we leave, we show you the new thermostat settings, the filter location and size, and the warranty registration. You get the written Kingswell Guarantee covering the workmanship, and we register the manufacturer warranty on the equipment for you.
- Follow-up check. About two weeks after installation, we call to make sure the system is cooling the way it should. If anything feels off, we’re back out at no charge.
AC Installation Pricing in Marietta
What you pay for AC installation in Marietta depends on the size of the home, the efficiency level you choose, and whether the ductwork needs attention. Here’s what we generally see across the area:
- Basic 14-SEER system, 2 to 3 ton: $4,200 to $6,200 installed. This covers smaller ranch homes and single-story layouts around Sandy Plains and Piedmont Road.
- Mid-range 16-SEER system, 3 to 4 ton: $5,800 to $7,900 installed. This is the most common range we install for two-story homes in East Cobb and Cherokee Heights.
- High-efficiency 18+ SEER, variable-speed system: $8,000 to $11,500 installed. These systems cost more up front but hold temperatures steadier and pull less power through the hottest stretch of July and August.
- Ductwork modifications or partial replacement: $800 to $3,000 depending on how much duct is undersized, damaged, or leaking. We’ll show you measurements before we recommend it.
- Smart thermostat installation: $180 to $400, often rolled into the job.
Brands we install regularly include Trane, Lennox, and Goodman, and our technicians are trained across nine major residential lines so we can match the right equipment to your home rather than forcing one brand into every job. Every quote is written, itemized, and free. Call (762) 240-5599 and we’ll set up a time to walk the house and put numbers on paper.
One thing worth saying directly, because it’s the reason people call us after being burned elsewhere: the written price is the price. No change at the door, no mid-job surprise line item. That’s the way we’ve run AC Repair & Installation Near Me in Marietta, GA since 2003.
FAQs – AC Installation
How much does AC installation cost in Marietta, GA?
Most full AC installations in Marietta run between $4,200 and $9,800, with mid-range 16-SEER systems for two-story homes typically landing around $5,800 to $7,900 installed. Ductwork corrections, electrical panel upgrades, or high-efficiency variable-speed equipment can push the total higher, which is why we give a written itemized quote before any work begins. Call (762) 240-5599 for a free in-home estimate specific to your house.
Is it cheaper to repair my AC or replace it?
It depends on the age of the system and the repair cost, but as a rule, if the unit is more than 12 years old and the repair exceeds 40 percent of replacement cost, installation is the better long-term money in Marietta’s cooling season. On an R-22 system with a leaking coil, the math almost always favors replacement. We’ll give you both numbers and let the arithmetic make the case.
How long does AC installation take?
A standard full-system replacement takes one to two days depending on ductwork scope and access. We give you a firm arrival window and the crew stays until the system runs through a full heating and cooling cycle and we’ve walked you through the thermostat and filter schedule.
Do you install all brands, or just the one you carry?
Our technicians are trained to service and install nine major residential HVAC brands, including Trane, Lennox, Goodman, Rheem, Carrier, York, Daikin, Bryant, and American Standard. We’ll recommend the unit that fits your home’s load calculation, ductwork, and budget rather than pushing whatever is on the truck. Call (762) 240-5599 to talk through your options with Victor or one of our senior techs.
Written by Victor Mancini, Owner at Cold Harbour Heating and Air Marietta, serving Marietta.