Kanawha County, WV Insulation Payback
Is attic insulation worth it in Kanawha County, WV?
Kanawha County sits in IECC climate zone 4 (Mixed-Humid) — heating load in winter and cooling load in summer, both worth taking seriously here. 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 $1,351 a year — payback in roughly 2.6 years. Few home upgrades pay back that quickly.
Where the savings come from
Heating accounts for about $1,164/year of that and cooling about $187/year — Kanawha County needs both. Nationally, Kanawha County ranks in the 42th percentile for insulation savings potential. Compared only against its own climate zone, Kanawha County places 483rd out of 825. Against West Virginia's own average of $1,526/year, Kanawha County runs 11% below that.
The climate data behind this
Kanawha County's climate figures — 4,353 heating and 1,162 cooling degree days a year — are read from CHARLESTON YEAGER AP, WV US, 5.1 miles away, NOAA's nearest 1991-2020 normals station. Combined heating and cooling load puts Kanawha County in the 40th 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.
The smaller top-up scenario
Already have a few inches up there? Topping R-11 up to R-49 runs about $2,280 for about $197/year saved — roughly 11.6 years to break even. Whether that is worth it depends on how long you plan to stay.
Getting it done in Kanawha County
Real bids depend on how easy the attic is to reach and whether old insulation needs removing first, so treat $3,480 as a starting estimate for a Kanawha County job, not a quote. Expect at least a $600 minimum charge from most contractors.
Kanawha County's numbers, sourced
The methodology guide lists exactly which DOE and NOAA sources feed Kanawha 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.