Sheridan County, ND Insulation Payback
Attic insulation payback for Sheridan County, ND
Sheridan County sits in IECC climate zone 7 (Very Cold) — severe, long winters where heating is nearly the whole story. For a currently uninsulated attic, DOE and ENERGY STAR recommend building up to R-60. Topping up a typical 1,000-square-foot attic from bare joists (R-2) to R-60 runs an estimated $3,480, and saves about $2,322 a year in heating and cooling — a payback around 1.5 years. Hard to find a home improvement with a faster payback than this.
Heating vs. cooling in Sheridan County
Of that, about $2,217/year comes from reduced heating and $105/year from reduced cooling load through the ceiling. Sheridan County beats 94% of the counties in this 3,162-county dataset on estimated insulation savings. Among the 120 counties DOE places in zone 7, Sheridan County ranks 107th. Against North Dakota's own average of $2,496/year, Sheridan County runs 7% below that.
Where these numbers come from
The heating and cooling degree days behind this estimate — 8,290 HDD and 655 CDD (base 65°F, 1991-2020 normals) — come from MC CLUSKY, ND US, the nearest NOAA station with published normals, 8.6 miles from Sheridan County's center. Combined heating and cooling load puts Sheridan County in the 94th percentile of this 3,162-county dataset.
The smaller top-up scenario
If Sheridan 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 $339/year — payback about 6.7 years. Topping up the attic pays for itself here.
Next steps for a Sheridan 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 Sheridan County's estimated $2,322/year on the line.
More on how this was built
Nothing here is a guess: the methodology guide names the DOE climate map and NOAA station data behind every number on this page. See the DIY vs. contractor guide for whether a job this size is realistic to do yourself.