Sargent County, ND Insulation Payback
Attic insulation payback for Sargent County, ND
Sargent County, North Dakota is zone 6 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. 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 $2,479 a year in heating and cooling — a payback around 1.4 years. Hard to find a home improvement with a faster payback than this.
Heating vs. cooling in Sargent County
Of that, about $2,405/year comes from reduced heating and $75/year from reduced cooling load through the ceiling. Sargent County beats 97% of the counties in this 3,162-county dataset on estimated insulation savings. Among the 459 counties DOE places in zone 6, Sargent County ranks 18th. Against North Dakota's own average of $2,496/year, Sargent County runs 1% below that.
The climate data behind this
The heating and cooling degree days behind this estimate — 8,993 HDD and 466 CDD (base 65°F, 1991-2020 normals) — come from FORMAN 5 SSE, ND US, the nearest NOAA station with published normals, 5.4 miles from Sargent County's center. By total degree days, Sargent County sits at the 97th percentile nationally. DOE also classifies Sargent County as moisture regime A (humid) - ask a local contractor whether that changes the vapor-barrier approach for this job.
If the attic isn't bare
If Sargent 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 $362/year — payback about 6.3 years. Topping up the attic pays for itself here.
Next steps for a Sargent County attic
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 Sargent 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.