Logan County, OH Insulation Payback
Attic insulation payback for Logan County, OH
Logan County, Ohio is zone 5 under DOE's climate map (Cold), which means cold enough that heating, not cooling, is what decides the bill. An uninsulated attic there should be built up to 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 $1,740 a year — payback in roughly 2 years. Hard to find a home improvement with a faster payback than this.
The breakdown behind the number
Of that, about $1,612/year comes from reduced heating and $129/year from reduced cooling load through the ceiling. Logan County beats 69% of the counties in this 3,162-county dataset on estimated insulation savings. Among the 745 counties DOE places in zone 5, Logan County ranks 407th. Against Ohio's own average of $1,669/year, Logan County runs 4% above that.
Logan County's actual weather, not a national average
NOAA's BELLEFONTAINE, OH US station, 2.4 miles from Logan County, supplies the 6,027 HDD and 803 CDD this estimate runs on. Combined heating and cooling load puts Logan County in the 68th percentile of this 3,162-county dataset. DOE also classifies Logan County as moisture regime A (humid) - ask a local contractor whether that changes the vapor-barrier approach for this job.
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 $254/year saved (~9-year payback). It is close - the payback only just fits a reasonable timeframe.
Quotes and materials for this job
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 Logan 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.