Barnes County, ND Insulation Payback
Barnes County attic insulation, by the numbers
Barnes County sits in IECC climate zone 7 (Very Cold) — a climate where the heating season stretches across most of the year. For a currently uninsulated attic, DOE and ENERGY STAR recommend building 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 $2,547 a year — payback in roughly 1.4 years. Topping up the attic pays for itself fast here.
Heating vs. cooling in Barnes County
Split it out and it's roughly $2,483 a year on the heating side, $64 on cooling. By estimated insulation savings, Barnes County lands in the 98th percentile nationally. Zone 7 alone covers 120 counties in this dataset, and Barnes County comes in 55th by savings. North Dakota averages $2,496/year across the counties tracked here; Barnes County comes in 2% higher.
The climate data behind this
Barnes County's climate figures — 9,285 heating and 399 cooling degree days a year — are read from VALLEY CITY 3 NNW, ND US, 2.5 miles away, NOAA's nearest 1991-2020 normals station. Combined heating and cooling load puts Barnes County in the 98th percentile of this 3,162-county dataset.
The smaller top-up scenario
If Barnes 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 $371/year — payback about 6.1 years. Worth doing on the numbers alone.
Getting it done in Barnes County
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 Barnes County job, not a quote. Expect at least a $600 minimum charge from most contractors.
Where these figures come from
Barnes County's R-60 target and its degree-day figures both come from named federal sources - see the methodology guide for exactly which ones. The guide to what R-value actually means explains why R-60 is the target here specifically.