Mower County, MN Insulation Payback
Mower County attic insulation, by the numbers
Mower County, Minnesota is zone 6 under DOE's climate map (Cold), which means winters that dominate the energy bill, with cooling a minor factor. 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 $2,313 a year in heating and cooling — a payback around 1.5 years. Topping up the attic pays for itself fast here.
Heating vs. cooling in Mower County
Split it out and it's roughly $2,248 a year on the heating side, $66 on cooling. By estimated insulation savings, Mower County lands in the 93th percentile nationally. Zone 6 alone covers 459 counties in this dataset, and Mower County comes in 91st by savings. Minnesota averages $2,366/year across the counties tracked here; Mower County comes in 2% lower.
The climate data behind this
Mower County's climate figures — 8,407 heating and 408 cooling degree days a year — are read from GRAND MEADOW, MN US, 10.1 miles away, NOAA's nearest 1991-2020 normals station. By total degree days, Mower County sits at the 93th percentile nationally. One local detail the R-value alone won't tell you: Mower County sits in moisture regime A (humid), which can affect the vapor-barrier choice.
Already have some insulation?
Already have a few inches up there? Topping R-11 up to R-49 runs about $2,280 for about $337/year saved — roughly 6.8 years to break even. Worth doing on the numbers alone.
Next steps for a Mower County attic
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 Mower County's estimated $2,313/year on the line.
Where these figures come from
Mower 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.