Wilson County, KS Insulation Payback
Is attic insulation worth it in Wilson County, KS?
Wilson County, Kansas 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. 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 $1,460 a year — payback in roughly 2.4 years. Few home upgrades pay back that quickly.
Where the savings come from
Heating accounts for about $1,210/year of that and cooling about $250/year — Wilson County needs both. Nationally, Wilson County ranks in the 50th percentile for insulation savings potential. Compared only against its own climate zone, Wilson County places 259th out of 825. Against Kansas's own average of $1,594/year, Wilson County runs 8% below that.
The climate data behind this
The heating and cooling degree days behind this estimate — 4,525 HDD and 1,554 CDD (base 65°F, 1991-2020 normals) — come from FREDONIA, KS US, the nearest NOAA station with published normals, 4.8 miles from Wilson County's center. Combined heating and cooling load puts Wilson County in the 53th 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?
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 $213/year saved (~10.7-year payback). Whether that is worth it depends on how long you plan to stay.
Getting it done in Wilson County
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 Wilson County, not a bid - contractors typically charge a $600 minimum regardless of job size.
Wilson County's numbers, sourced
The methodology guide lists exactly which DOE and NOAA sources feed Wilson 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.