Ida County, IA Insulation Payback
Attic insulation payback for Ida County, IA
Ida County, Iowa 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. 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 1.7 years at an estimated $2,041/year saved. Hard to find a home improvement with a faster payback than this.
The breakdown behind the number
Of that, about $1,910/year comes from reduced heating and $132/year from reduced cooling load through the ceiling. Ida County beats 84% of the counties in this 3,162-county dataset on estimated insulation savings. Among the 459 counties DOE places in zone 6, Ida County ranks 361st. Against Iowa's own average of $1,985/year, Ida County runs 3% above that.
Ida County's actual weather, not a national average
The heating and cooling degree days behind this estimate — 7,143 HDD and 819 CDD (base 65°F, 1991-2020 normals) — come from IDA GROVE 5NW, IA US, the nearest NOAA station with published normals, 0.4 miles from Ida County's center. That combined heating-and-cooling load ranks Ida County 471st nationally by total degree days — the 85th percentile. DOE also classifies Ida County as moisture regime A (humid) - ask a local contractor whether that changes the vapor-barrier approach for this job.
If the attic isn't bare
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 $298/year saved (~7.7-year payback). Topping up the attic pays for itself here.
Next steps for a Ida County attic
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 Ida County, not a bid - contractors typically charge a $600 minimum regardless of job size.
More on how this was built
Nothing here is a guess: the methodology guide names the DOE climate map and NOAA station data behind every number on this page. See the DIY vs. contractor guide for whether a job this size is realistic to do yourself.