Morrison County, MN Insulation Payback
Is attic insulation worth it in Morrison County, MN?
DOE classifies Morrison County as climate zone 6, cold — cold enough that heating, not cooling, is what decides the bill. Its recommended attic R-value for bare joists is 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 $2,231 a year — payback in roughly 1.6 years. Few home upgrades pay back that quickly.
The breakdown behind the number
Heating accounts for about $2,126/year of that and cooling about $106/year — Morrison County needs both. Nationally, Morrison County ranks in the 91th percentile for insulation savings potential. Compared only against its own climate zone, Morrison County places 159th out of 459. Against Minnesota's own average of $2,366/year, Morrison County runs 6% below that.
The climate data behind this
The heating and cooling degree days behind this estimate — 7,950 HDD and 657 CDD (base 65°F, 1991-2020 normals) — come from LITTLE FALLS 2NNE, MN US, the nearest NOAA station with published normals, 3.9 miles from Morrison County's center. By total degree days, Morrison County sits at the 92th percentile nationally. Its moisture regime is classified humid, which matters for whether the attic needs a vapor retarder as part of the job — worth asking a contractor about locally.
The smaller top-up scenario
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 $325/year saved (~7-year payback). The math clears comfortably within a normal ownership horizon.
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 Morrison County job, not a quote. Expect at least a $600 minimum charge from most contractors.
Morrison County's numbers, sourced
The methodology guide lists exactly which DOE and NOAA sources feed Morrison 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.