Alger County, MI Insulation Payback
Alger County, MI: what topping up your attic actually costs
DOE classifies Alger 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 1.5 years at an estimated $2,301/year saved. That's about as fast as attic paybacks get.
Heating vs. cooling in Alger County
The estimated savings split roughly $2,266/year heating, $35/year cooling. Out of every 100 US counties tracked here, Alger County's savings potential beats roughly 93 of them. Within zone 6 specifically, it ranks 96th of 459 counties by estimated savings. Michigan averages $2,064/year across the counties tracked here; Alger County comes in 11% higher.
Alger County's actual weather, not a national average
The heating and cooling degree days behind this estimate — 8,474 HDD and 219 CDD (base 65°F, 1991-2020 normals) — come from MUNSING LAKESHORE, MI US, the nearest NOAA station with published normals, 7.3 miles from Alger County's center. That combined heating-and-cooling load ranks Alger County 237th nationally by total degree days — the 93th percentile. Alger County falls in DOE's moisture regime A (humid), a detail that affects vapor-barrier recommendations more than the R-value target itself.
Already have some insulation?
Already have a few inches up there? Topping R-11 up to R-49 runs about $2,280 for about $336/year saved — roughly 6.8 years to break even. That is a solid payback as home upgrades go.
Next steps for a Alger County attic
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 Alger 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.