Harrison County, KY Insulation Payback
Is attic insulation worth it in Harrison County, KY?
Harrison County, Kentucky is zone 4 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-60. Going from R-2 to the recommended R-60 costs roughly $3,480 installed for a typical attic (about 1,000 sq ft), and pays for itself in about 2.4 years at an estimated $1,471/year saved. Few home upgrades pay back that quickly.
The breakdown behind the number
Heating accounts for about $1,291/year of that and cooling about $181/year — Harrison County needs both. Nationally, Harrison County ranks in the 51th percentile for insulation savings potential. Compared only against its own climate zone, Harrison County places 230th out of 825. Against Kentucky's own average of $1,385/year, Harrison County runs 6% above that.
The climate data behind this
Harrison County's climate figures — 4,827 heating and 1,124 cooling degree days a year — are read from CYNTHIANA, KY US, 5 miles away, NOAA's nearest 1991-2020 normals station. Combined heating and cooling load puts Harrison County in the 51th percentile of this 3,162-county dataset. Its moisture regime is classified humid, which matters for whether the attic needs a vapor retarder as part of the job — worth asking a contractor about locally.
Already have some insulation?
Already have a few inches up there? Topping R-11 up to R-49 runs about $2,280 for about $215/year saved — roughly 10.6 years to break even. Whether that is worth it depends on how long you plan to stay.
Quotes and materials for this job
Actual quotes will vary by attic access, existing debris, and whether the job needs air sealing first. Treat the $3,480 figure above as a planning number for Harrison County, not a bid - contractors typically charge a $600 minimum regardless of job size.
Harrison County's numbers, sourced
The methodology guide lists exactly which DOE and NOAA sources feed Harrison County's numbers, and where the cost assumptions come from. See the DIY vs. contractor guide for whether a job this size is realistic to do yourself.