Clay County, KS Insulation Payback
Clay County attic insulation, by the numbers
Clay 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 $1,657 a year — payback in roughly 2.1 years. Topping up the attic pays for itself fast here.
Where the savings come from
Split it out and it's roughly $1,422 a year on the heating side, $236 on cooling. By estimated insulation savings, Clay County lands in the 63th percentile nationally. Zone 4 alone covers 825 counties in this dataset, and Clay County comes in 14th by savings. Kansas averages $1,594/year across the counties tracked here; Clay County comes in 4% higher.
Clay County's actual weather, not a national average
The heating and cooling degree days behind this estimate — 5,317 HDD and 1,467 CDD (base 65°F, 1991-2020 normals) — come from CLAY CTR, KS US, the nearest NOAA station with published normals, 3 miles from Clay County's center. Combined heating and cooling load puts Clay County in the 67th percentile of this 3,162-county dataset. One local detail the R-value alone won't tell you: Clay County sits in moisture regime A (humid), which can affect the vapor-barrier choice.
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 $242/year saved — roughly 9.4 years to break even. Call this borderline rather than a clear win.
Next steps for a Clay County attic
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 Clay County job, not a quote. Expect at least a $600 minimum charge from most contractors.
Where these figures come from
Clay County's R-60 target and its degree-day figures both come from named federal sources - see the methodology guide for exactly which ones. The guide to what R-value actually means explains why R-60 is the target here specifically.