Kidder County, ND Insulation Payback
Kidder County, ND: what topping up your attic actually costs
DOE classifies Kidder County as climate zone 7, very cold — winters long and harsh enough that heating is essentially the entire equation. Its recommended attic R-value for bare joists is R-60. Going from R-2 to the recommended R-60 costs roughly $3,480 installed for a typical attic (about 1,000 sq ft), and pays for itself in about 1.4 years at an estimated $2,445/year saved. That's about as fast as attic paybacks get.
Heating vs. cooling in Kidder County
The estimated savings split roughly $2,378/year heating, $66/year cooling. Out of every 100 US counties tracked here, Kidder County's savings potential beats roughly 97 of them. Within zone 7 specifically, it ranks 80th of 120 counties by estimated savings. North Dakota averages $2,496/year across the counties tracked here; Kidder County comes in 2% lower.
Where these numbers come from
NOAA's STEELE 4N, ND US station, 10.7 miles from Kidder County, supplies the 8,895 HDD and 413 CDD this estimate runs on. That combined heating-and-cooling load ranks Kidder County 109th nationally by total degree days — the 97th percentile.
If the attic isn't bare
A shallower starting point changes the math: with R-11 already down, only the gap to R-49 needs filling, at roughly $2,280 for an estimated $357/year saved (~6.4-year payback). That is a solid payback as home upgrades go.
Quotes and materials for this job
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 Kidder County job, not a quote. Expect at least a $600 minimum charge from most contractors.
Nothing here is a guess
Every figure on this page traces to DOE/IECC climate zones and NOAA degree-day normals, documented in the methodology guide. The guide to what R-value actually means explains why R-60 is the target here specifically.