HVAC System Replacement Cost in Roswell, Georgia
Our 2026 estimate for full HVAC system replacement in Roswell, GA is $11,100 to $24,100. That puts Roswell 30% above the national average, mainly because of higher incomes and home values, which push labor rates up.
Compare Free Quotes in Roswell
Roswell Weather and HVAC Load
NOAA's 1991-2020 climate normals put Roswell at 2,980 heating degree days and 1,728 cooling degree days per year. Neither season dominates in Roswell. That balance is a big reason heat pumps and dual-fuel systems sell well in Georgia. On average, Roswell gets 49 freezing nights and 53 days above 90°F per year. For a 2,000 sq ft house, this climate points to a heating load somewhere near 45,000 BTU/h. Treat that as a starting number. A Manual J calculation will move it up or down based on insulation and windows.
| Heating degree days / year | 2,980 |
|---|---|
| Cooling degree days / year | 1,728 |
| Nights at or below 32°F | 49 |
| Days above 90°F | 53 |
| Average low / high | 51.1°F / 71.8°F |
Roswell Housing Stock
The median Roswell home dates to 1989, according to the Census ACS. That makes the typical house about 37 years old. Plenty of houses from this period still run original 1990s or early-2000s equipment, which is past its expected service life. Owners live in 71.2% of occupied homes, roughly 25,000 households. Homes here have a median value of $520,500 and households a median income of $124,422. Those two numbers drive the labor adjustment in our estimate.
Fulton County had 11 hail days and 52 days with damaging thunderstorm winds from 2020 through 2025, according to NOAA storm records. The largest hail reported was 1.75 inches across. Hail flattens the thin aluminum fins on condenser coils and cuts airflow. After a big storm, take a look at the outdoor unit; homeowners insurance often covers the damage. Fulton County also had 3 tornado days in that period.
When Replacement Makes Sense
- Both the heating and cooling equipment are 15 years old or more
- Some rooms are uncomfortable, and the energy bills are high
- An old R-22 AC paired with an aging furnace
What Moves the Price
- Duct repair or replacement
- Permits and electrical work
- Furnace plus AC, or heat pump plus air handler
- Efficiency ratings: SEER2, AFUE and HSPF2
- Equipment sized to the house and climate
- Thermostat and zoning upgrades
We raised the national figures about 30% for Roswell using local income, home values and the equipment size this climate needs. Real bids can still come in outside the range, so collect three written quotes.
What the Quote Should Cover
- A load calculation and system design
- Duct connections and sealing
- New, matched heating and cooling equipment
- Startup, testing and warranty registration
- Removing the old equipment
Georgia Permits, Efficiency Rules and Rebates
Georgia is in the DOE's Southeast region, where new split central air conditioners need at least 14.3 SEER2 (13.8 SEER2 for systems of 45,000 BTU/h and up). Plan on a mechanical permit for most replacements in Roswell; the contractor normally pulls it. Before you sign, ask each bidder for their Georgia license or registration number and proof of insurance. The federal 25C tax credit ended for equipment installed after December 31, 2025, so incentives now come mostly from utilities and state programs. Check your electric and gas utility's rebate page before you pick equipment.
Before You Hire
- Replacing both pieces at once usually costs less than two separate jobs a few years apart.
- Make every bidder quote the same efficiency ratings, or the prices won't compare.
- Ask for a duct leakage test. Leaky ducts can lose 20 to 30% of what the system puts out.
Get Free HVAC System Replacement Quotes in Roswell
Tell us where you are and up to three licensed local pros will get in touch. You don't have to hire any of them.
HVAC System Replacement Questions from Roswell Homeowners
How much is full HVAC system replacement in Roswell?
Plan on $11,100 to $24,100, with most jobs near $18,300. Equipment efficiency, house size and the condition of the ducts and wiring decide where your quote falls.
When is the best time to schedule full HVAC system replacement in Roswell?
In spring or fall. Those are the slow months between heating and cooling season in Roswell.
How often should an HVAC system be replaced?
Most systems get replaced every 15 to 20 years. AC units and heat pumps usually wear out before gas furnaces do.
Can I replace only the AC and keep my furnace?
Yes, as long as the indoor coil and blower work with the new AC. A mismatched system loses efficiency and can void the warranty.
HVAC System Replacement Near Roswell
- Alpharetta $12,000 to $26,100
- Dunwoody $10,900 to $23,700
- Sandy Springs $10,700 to $23,300
- Johns Creek $12,000 to $26,100
Sources: U.S. Census Bureau ACS 5-year estimates 2019-2023 and 2024 population estimates; NOAA NCEI U.S. Climate Normals 1991-2020, station Atlanta Peachtree Airport; NOAA Storm Events Database 2020-2025, Fulton County. Prices are our estimates, not contractor quotes. Updated 2026.