Montmorency County, MI Insulation Payback
Montmorency County attic insulation, by the numbers
DOE classifies Montmorency County as climate zone 6, cold — a real winter that drives most of the annual energy bill here. 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 1.6 years at an estimated $2,235/year saved. Topping up the attic pays for itself fast here.
Where the savings come from
Split it out and it's roughly $2,181 a year on the heating side, $53 on cooling. By estimated insulation savings, Montmorency County lands in the 91th percentile nationally. Zone 6 alone covers 459 counties in this dataset, and Montmorency County comes in 157th by savings. Michigan averages $2,064/year across the counties tracked here; Montmorency County comes in 8% higher.
Montmorency County's actual weather, not a national average
Montmorency County's climate figures — 8,158 heating and 332 cooling degree days a year — are read from ATLANTA, MI US, 1.4 miles away, NOAA's nearest 1991-2020 normals station. Combined heating and cooling load puts Montmorency County in the 91th percentile of this 3,162-county dataset. One local detail the R-value alone won't tell you: Montmorency County sits in moisture regime A (humid), which can affect the vapor-barrier choice.
Already have some insulation?
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 $326/year saved (~7-year payback). Worth doing on the numbers alone.
Getting it done in Montmorency County
Actual quotes will vary by attic access, existing debris, and whether the job needs air sealing first. Treat the $3,480 figure above as a planning number for Montmorency County, not a bid - contractors typically charge a $600 minimum regardless of job size.
Where these figures come from
Montmorency 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.