Decatur County, KS Insulation Payback
Is attic insulation worth it in Decatur County, KS?
Decatur County sits in IECC climate zone 5 (Cold) — cold enough that heating, not cooling, is what decides the bill. For a currently uninsulated attic, DOE and ENERGY STAR recommend building 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 years at an estimated $1,735/year saved. Few home upgrades pay back that quickly.
Heating vs. cooling in Decatur County
Heating accounts for about $1,553/year of that and cooling about $183/year — Decatur County needs both. Nationally, Decatur County ranks in the 68th percentile for insulation savings potential. Compared only against its own climate zone, Decatur County places 416th out of 745. Against Kansas's own average of $1,594/year, Decatur County runs 9% above that.
Decatur County's actual weather, not a national average
The heating and cooling degree days behind this estimate — 5,807 HDD and 1,137 CDD (base 65°F, 1991-2020 normals) — come from OBERLIN, KS US, the nearest NOAA station with published normals, 4.1 miles from Decatur County's center. By total degree days, Decatur County sits at the 70th percentile nationally. 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.
If the attic isn't bare
Already have a few inches up there? Topping R-11 up to R-49 runs about $2,280 for about $253/year saved — roughly 9 years to break even. Whether that is worth it depends on how long you plan to stay.
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 Decatur County's estimated $1,735/year on the line.
Decatur County's numbers, sourced
The methodology guide lists exactly which DOE and NOAA sources feed Decatur 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.