Pierce County, ND Insulation Payback
Is attic insulation worth it in Pierce County, ND?
Pierce County, North Dakota is zone 7 under DOE's climate map (Very Cold), which means severe, long winters where heating is nearly the whole story. 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 $2,669 a year — payback in roughly 1.3 years. Few home upgrades pay back that quickly.
Where the savings come from
Heating accounts for about $2,621/year of that and cooling about $49/year — Pierce County needs both. Nationally, Pierce County ranks in the 99th percentile for insulation savings potential. Compared only against its own climate zone, Pierce County places 28th out of 120. Against North Dakota's own average of $2,496/year, Pierce County runs 7% above that.
Where these numbers come from
The heating and cooling degree days behind this estimate — 9,801 HDD and 304 CDD (base 65°F, 1991-2020 normals) — come from RUGBY, ND US, the nearest NOAA station with published normals, 8.1 miles from Pierce County's center. By total degree days, Pierce County sits at the 99th percentile nationally.
Already have some insulation?
Already have a few inches up there? Topping R-11 up to R-49 runs about $2,280 for about $389/year saved — roughly 5.9 years to break even. The math clears comfortably within a normal ownership horizon.
Quotes and materials for this job
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 Pierce County's estimated $2,669/year on the line.
Pierce County's numbers, sourced
The methodology guide lists exactly which DOE and NOAA sources feed Pierce County's numbers, and where the cost assumptions come from. See the DIY vs. contractor guide for whether a job this size is realistic to do yourself.