A new AC system is a big investment, and in Georgia's climate it's one you'll lean on for months at a time. Ultimate Home Services Plus helps Marietta homeowners choose the right system for their home and budget — then installs it correctly so it runs efficiently for years.
The single biggest reason new air conditioners underperform isn't the brand — it's improper sizing and sloppy installation. A unit that's too large short-cycles and never removes humidity; one that's too small runs constantly and wears out early. We start every installation with a real load calculation so your system is matched to your home, not guessed at.
Signs It's Time to Replace Your AC
- Your system is 10–15+ years old and repairs are adding up.
- It uses R-22 (old) refrigerant, which is phased out and expensive to service.
- Rising energy bills even though usage hasn't changed.
- Frequent breakdowns — you're calling for repairs every season.
- Uneven cooling or rooms that never reach the set temperature.
- Excess humidity indoors even when the AC is running.
What Our Installation Includes
A professional install is far more than swapping a box. Every central air installation includes:
- Proper load calculation (Manual J) to size the system to your home.
- Removal & disposal of your old equipment.
- New condenser, coil, and line set as needed, installed to manufacturer spec.
- Correct refrigerant charge and airflow setup — the details that make or break efficiency.
- Thermostat setup and full system testing.
- Permits & code compliance for safe, to-spec work.
Choosing the Right System
We'll walk you through efficiency ratings (SEER2), single- vs multi-stage options, and how each affects your comfort and energy bills — in plain English, with options at multiple price points. Free estimates and financing make it easy to choose what fits your budget. Need a repair instead of a replacement? See our AC repair service.
How It Works
- Free in-home estimate. We assess your home, ductwork, and cooling needs — no pressure, no obligation.
- Clear options & quote. You get system choices at different price points, with financing available.
- Professional installation. Clean, code-compliant work done by our own technicians.
- Testing & warranty sign-off. We verify performance and walk you through your new system and its warranty.
Serving Marietta & Metro Atlanta
We install central air and AC systems throughout Marietta, Kennesaw, Smyrna, Acworth, Powder Springs, Dallas, Hiram and surrounding areas across Cobb, Paulding and Gwinnett counties. View all service areas or explore our other HVAC services.
AC Installation FAQs
Ready for a New AC System?
Get a free, no-pressure estimate from Marietta's trusted HVAC installation team.