Boyd County, NE Insulation Payback
Boyd County attic insulation, by the numbers
Boyd County, Nebraska is zone 5 under DOE's climate map (Cold), which means cold enough that heating, not cooling, is what decides the bill. 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 $2,026 a year — payback in roughly 1.7 years. Topping up the attic pays for itself fast here.
The breakdown behind the number
Split it out and it's roughly $1,901 a year on the heating side, $125 on cooling. By estimated insulation savings, Boyd County lands in the 83th percentile nationally. Zone 5 alone covers 745 counties in this dataset, and Boyd County comes in 30th by savings. Nebraska averages $1,872/year across the counties tracked here; Boyd County comes in 8% higher.
Where these numbers come from
Boyd County's climate figures — 7,109 heating and 778 cooling degree days a year — are read from BUTTE, NE US, 4.2 miles away, NOAA's nearest 1991-2020 normals station. That combined heating-and-cooling load ranks Boyd County 485th nationally by total degree days — the 85th percentile. One local detail the R-value alone won't tell you: Boyd County sits in moisture regime A (humid), which can affect the vapor-barrier choice.
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 $295/year saved (~7.7-year payback). Worth doing on the numbers alone.
Next steps for a Boyd County attic
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 Boyd County's estimated $2,026/year on the line.
Where these figures come from
Boyd 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.