Henry County, KY Insulation Payback
Attic insulation payback for Henry County, KY
Henry County sits in IECC climate zone 4 (Mixed-Humid) — a genuine mix of cold winters and humid summers, with neither one dominating the bill. For a currently uninsulated attic, DOE and ENERGY STAR recommend building up to R-60. For an attic around 1,000 square feet, closing the gap from R-2 to R-60 costs around $3,480 and saves an estimated $1,477 a year — payback in roughly 2.4 years. Hard to find a home improvement with a faster payback than this.
Heating vs. cooling in Henry County
Of that, about $1,277/year comes from reduced heating and $199/year from reduced cooling load through the ceiling. Henry County beats 51% of the counties in this 3,162-county dataset on estimated insulation savings. Among the 825 counties DOE places in zone 4, Henry County ranks 214th. Against Kentucky's own average of $1,385/year, Henry County runs 7% above that.
Where these numbers come from
Henry County's climate figures — 4,777 heating and 1,241 cooling degree days a year — are read from CRESTWOOD 4NE, KY US, 17.3 miles away, NOAA's nearest 1991-2020 normals station. Combined heating and cooling load puts Henry County in the 52th percentile of this 3,162-county dataset. DOE also classifies Henry 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-49 needs filling, at roughly $2,280 for an estimated $215/year saved (~10.6-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 Henry County's estimated $1,477/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.