Energy Efficiency
Lower your monthly bills with modern SEER2 rated systems designed for Georgia's climate.
AC Installation & Replacement in Marietta, GA – Serving the Greater Atlanta Area
Marietta, GA — Cobb County
AC Installation & Replacement & in Marietta, GA & Greater Atlanta
Looking for AC installation or replacement in Marietta, GA or the greater Atlanta area? A&D HVAC provides expert sizing, seamless installation, and local reliability — with free estimates and energy-efficient systems built for Georgia's climate.
Free Estimates
Marietta Area Coverage
2,400+
Installations Done
Same Day
Free Estimates
4.9 ★
Google Rating
100%
Licensed & Insured
Why upgrade
Beat the Georgia Heat with a High-Performance System
Planning an AC replacement in Marietta or the greater Atlanta area? We help you choose equipment properly sized for Georgia's humidity — energy-efficient, quiet, and built to handle summers that regularly push past 95°F.
Enhanced Comfort
Consistent cooling and better humidity control for Marietta's hot, humid summers.
Total Reliability
Stop worrying about breakdowns during record-breaking heat waves with a brand-new system.
Our process
Expert Sizing & Installation
Professional Assessment
We calculate your home's exact cooling load (Manual J) to ensure the perfect fit.
Precision Setup
Our certified techs install your unit with local Cobb County building codes in mind.
Long-Term Value
Right-sized equipment avoids short cycling, cuts waste, and protects your investment in a Marietta climate.
System Selection
Choose from top brands tailored to your budget and Marietta home style.
How it works
The A&D Process
01
Local Dispatch
We schedule your estimate at a time that works for your household.
02
Expert Diagnosis
Measurements, options, and transparent pricing before install day.
03
Precision Install
Protective floor coverings, clean work areas, and full system testing.
Service area
AC Installation & Replacement Across Marietta, Cobb County & Atlanta
From Kennesaw Mountain to East Cobb, Smyrna, and the greater Atlanta metro — our certified technicians install and replace AC systems across the entire area. Every job follows local Cobb County building codes and Georgia climate requirements.
Kennesaw Mountain
East Cobb
Smyrna
Marietta Square
West Cobb
Powder Springs
Modern Systems
High-efficiency SEER2 rated units
Home Comfort
Perfect climate for your family
Real Results for Atlanta Homeowners
David did a great job. I have secured this company for regular ac/heat unit maintenance. Great customer service and attention to detail while not breaking the bank. Would highly recommend!
Yanexis Gonzalez
"
Outstanding service from start to finish. They performed the annual maintenance on my AC unit, replaced the filter, and made sure everything was running perfectly. The technician was extremely professional, punctual, and detail-oriented. He took the time to explain everything, which gave me a lot of confidence in their work. They also left everything spotless. You can truly tell when a company cares about quality and customer satisfaction. I highly recommend them top-notch service all the way! Price assessment Great price
Keila Hernandez
"
Great service and pricing. I needed an old tankless water heater replaced and A&D was able to quote the job and complete the repair very quickly. The final price came in slightly under the quote due to one part not being needed, which is very rare in recent times!
Ryan Rager
"
Maintenance & Service Agreements
Frequently Asked Questions
How long does a new AC installation take in Marietta?
Most residential replacements are completed in one day. Larger changeouts or duct modifications may require additional time — we give you a clear timeline before we start.
Do you offer financing for new systems?
We can review financing options that fit your budget during your estimate. Ask your comfort advisor for current promotions.
How do I know what size AC I need?
We perform a load calculation based on your home’s square footage, insulation, windows, and ductwork — not “rule of thumb” guessing.
Will you haul away the old equipment?
Yes. Old equipment and scrap are removed and disposed of in accordance with local requirements.
Need Professional Service?
Call us today for reliable service and expert solutions