Cheyenne County, KS Insulation Payback
Cheyenne County, KS: what topping up your attic actually costs
Cheyenne County, Kansas is zone 5 under DOE's climate map (Cold), which means a real winter that drives most of the annual energy bill 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 $1,732 a year — payback in roughly 2 years.
That's about as fast as attic paybacks get.
Where the savings come from
The estimated savings split roughly $1,555/year heating, $176/year cooling. Out of every 100 US counties tracked here, Cheyenne County's savings potential beats roughly 68 of them. Within zone 5 specifically, it ranks 426th of 754 counties by estimated savings. Kansas averages $1,594/year across the counties tracked here; Cheyenne County comes in 9% higher.
Where these numbers come from
NOAA's Saint Francis, KS US station, 4.5 miles from Cheyenne County, supplies the 5,817 HDD and 1,097 CDD this estimate runs on. Combined heating and cooling load puts Cheyenne County in the 70th percentile of this 3,171-county dataset. Cheyenne County falls in DOE's moisture regime A (humid), a detail that affects vapor-barrier recommendations more than the R-value target itself.
The smaller top-up scenario
If Cheyenne County's attic already has 3-4 inches of old insulation (about R-11) rather than bare joists, the recommended target drops to R-49. That smaller top-up costs around $2,280 and saves an estimated $253/year — payback about 9 years. This one is a genuine toss-up, not a clear yes.
Quotes and materials for this job
Get quotes from at least two local contractors 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 checking upfront given Cheyenne County's estimated $1,732/year on the line.
Nothing here is a guess
Every figure on this page traces to DOE/IECC climate zones and NOAA degree-day normals, documented in the methodology guide. The guide to what R-value actually means explains why R-60 is the target here specifically.