McPherson County, KS Insulation Payback
McPherson County, KS: what topping up your attic actually costs
McPherson County sits in IECC climate zone 4 (Mixed-Humid) — real heating and real cooling seasons both, roughly balanced across the year. 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 $1,581 a year — payback in roughly 2.2 years. That's about as fast as attic paybacks get.
Where the savings come from
The estimated savings split roughly $1,325/year heating, $256/year cooling. Out of every 100 US counties tracked here, McPherson County's savings potential beats roughly 58 of them. Within zone 4 specifically, it ranks 69th of 825 counties by estimated savings. Kansas averages $1,594/year across the counties tracked here; McPherson County comes in 1% lower.
Where these numbers come from
McPherson County's climate figures — 4,957 heating and 1,592 cooling degree days a year — are read from MCPHERSON, KS US, 2.4 miles away, NOAA's nearest 1991-2020 normals station. That combined heating-and-cooling load ranks McPherson County 1188th nationally by total degree days — the 62th percentile. McPherson County falls in DOE's moisture regime A (humid), a detail that affects vapor-barrier recommendations more than the R-value target itself.
If the attic isn't bare
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 $231/year saved (~9.9-year payback). This one is a genuine toss-up, not a clear yes.
Quotes and materials for this job
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 McPherson County job, not a quote. Expect at least a $600 minimum charge from most contractors.
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.