Latimer County, OK Insulation Payback
Attic insulation payback for Latimer County, OK
Latimer County, Oklahoma is zone 3 under DOE's climate map (Mixed-Humid), which means heating load in winter and cooling load in summer, both worth taking seriously here. 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 $1,147 a year in heating and cooling — a payback around 2.5 years. Hard to find a home improvement with a faster payback than this.
Heating vs. cooling in Latimer County
Of that, about $831/year comes from reduced heating and $316/year from reduced cooling load through the ceiling. Latimer County beats 27% of the counties in this 3,162-county dataset on estimated insulation savings. Among the 690 counties DOE places in zone 3, Latimer County ranks 166th. Against Oklahoma's own average of $1,260/year, Latimer County runs 9% below that.
The climate data behind this
NOAA's WILBURTON 9 ENE, OK US station, 8.3 miles from Latimer County, supplies the 3,131 HDD and 1,984 CDD this estimate runs on. That combined heating-and-cooling load ranks Latimer County 2246th nationally by total degree days — the 29th percentile. DOE also classifies Latimer County as moisture regime A (humid) - ask a local contractor whether that changes the vapor-barrier approach for this job.
If the attic isn't bare
A shallower starting point changes the math: with R-11 already down, only the gap to R-38 needs filling, at roughly $1,620 for an estimated $154/year saved (~10.5-year payback). 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 Latimer County's estimated $1,147/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.