Steele County, ND Insulation Payback
Attic insulation payback for Steele County, ND
Steele 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 $2,712 a year in heating and cooling — a payback around 1.3 years. Hard to find a home improvement with a faster payback than this.
The breakdown behind the number
Of that, about $2,653/year comes from reduced heating and $59/year from reduced cooling load through the ceiling. Steele County beats 99% of the counties in this 3,162-county dataset on estimated insulation savings. Among the 120 counties DOE places in zone 7, Steele County ranks 21st. Against North Dakota's own average of $2,496/year, Steele County runs 9% above that.
Where these numbers come from
The heating and cooling degree days behind this estimate — 9,921 HDD and 369 CDD (base 65°F, 1991-2020 normals) — come from COLGATE, ND US, the nearest NOAA station with published normals, 14.7 miles from Steele County's center. Combined heating and cooling load puts Steele County in the 99th percentile of this 3,162-county dataset.
The smaller top-up scenario
If Steele 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 $396/year — payback about 5.8 years. Topping up the attic pays for itself here.
Quotes and materials for this job
Actual quotes will vary by attic access, existing debris, and whether the job needs air sealing first. Treat the $3,480 figure above as a planning number for Steele County, not a bid - contractors typically charge a $600 minimum regardless of job size.
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.