Lee County, GA Insulation Payback
Attic insulation payback for Lee County, GA
Lee County, Georgia is zone 3 under DOE's climate map (Hot-Humid), which means humid heat for much of the year, with cooling running far more than heating ever does. An uninsulated attic there should be built up to R-49. Topping up a typical 1,000-square-foot attic from bare joists (R-2) to R-49 runs an estimated $2,820, and saves about $910 a year in heating and cooling — a payback around 3.1 years. Worth doing on the numbers alone.
Heating vs. cooling in Lee County
Of that, about $537/year comes from reduced heating and $373/year from reduced cooling load through the ceiling. Lee County beats 10% of the counties in this 3,162-county dataset on estimated insulation savings. Among the 690 counties DOE places in zone 3, Lee County ranks 634th. Against Georgia's own average of $974/year, Lee County runs 7% below that.
Lee County's actual weather, not a national average
NOAA's LEESBURG 2, GA US station, 4.5 miles from Lee County, supplies the 2,024 HDD and 2,338 CDD this estimate runs on. Combined heating and cooling load puts Lee County in the 8th percentile of this 3,162-county dataset. DOE also classifies Lee County as moisture regime A (humid) - ask a local contractor whether that changes the vapor-barrier approach for this job.
The smaller top-up scenario
If Lee County's attic already has 3-4 inches of old insulation (about R-11) rather than bare joists, the recommended target drops to R-38. That smaller top-up costs around $1,620 and saves an estimated $123/year — payback about 13.2 years. It is close - the payback only just fits a reasonable timeframe.
Quotes and materials for this job
Get more than one quote before committing. Attic access and any needed air sealing move the price around, and most contractors won't take a job below roughly $600 regardless of size - worth asking upfront given Lee County's estimated $910/year on the line.
More on how this was built
Nothing here is a guess: the methodology guide names the DOE climate map and NOAA station data behind every number on this page. See the DIY vs. contractor guide for whether a job this size is realistic to do yourself.