Adair County, MO Insulation Payback
Adair County, MO: what topping up your attic actually costs
Adair County, Missouri 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 $1,755 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 $1,592/year heating, $163/year cooling. Out of every 100 US counties tracked here, Adair County's savings potential beats roughly 70 of them. Within zone 5 specifically, it ranks 375th of 745 counties by estimated savings. Missouri averages $1,534/year across the counties tracked here; Adair County comes in 14% higher.
The climate data behind this
Adair County's climate figures — 5,954 heating and 1,016 cooling degree days a year — are read from KIRKSVILLE, MO US, 1.8 miles away, NOAA's nearest 1991-2020 normals station. That combined heating-and-cooling load ranks Adair County 929th nationally by total degree days — the 71th percentile. Adair 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
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 $256/year saved (~8.9-year payback). This one is a genuine toss-up, not a clear yes.
Next steps for a Adair 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 Adair 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.