Cass County, NE Insulation Payback
Cass County attic insulation, by the numbers
Cass County, Nebraska is zone 5 under DOE's climate map (Cold), which means winters that dominate the energy bill, with cooling a minor factor. 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 $1,782 a year — payback in roughly 2 years. Topping up the attic pays for itself fast here.
Where the savings come from
Split it out and it's roughly $1,614 a year on the heating side, $168 on cooling. By estimated insulation savings, Cass County lands in the 71th percentile nationally. Zone 5 alone covers 745 counties in this dataset, and Cass County comes in 333rd by savings. Nebraska averages $1,872/year across the counties tracked here; Cass County comes in 5% lower.
Where these numbers come from
The heating and cooling degree days behind this estimate — 6,037 HDD and 1,047 CDD (base 65°F, 1991-2020 normals) — come from WEEPING WATER, NE US, the nearest NOAA station with published normals, 3.2 miles from Cass County's center. Combined heating and cooling load puts Cass County in the 73th percentile of this 3,162-county dataset. One local detail the R-value alone won't tell you: Cass County sits in moisture regime A (humid), which can affect the vapor-barrier choice.
If the attic isn't bare
If Cass 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 $260/year — payback about 8.8 years. Call this borderline rather than a clear win.
Getting it done in Cass County
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 Cass County job, not a quote. Expect at least a $600 minimum charge from most contractors.
Where these figures come from
Cass 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.