Shelby County, OH Insulation Payback
Attic insulation payback for Shelby County, OH
DOE classifies Shelby County as climate zone 5, 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 $1,712 a year — payback in roughly 2 years. Hard to find a home improvement with a faster payback than this.
Where the savings come from
Of that, about $1,580/year comes from reduced heating and $131/year from reduced cooling load through the ceiling. Shelby County beats 67% of the counties in this 3,162-county dataset on estimated insulation savings. Among the 745 counties DOE places in zone 5, Shelby County ranks 466th. Against Ohio's own average of $1,669/year, Shelby County runs 3% above that.
The climate data behind this
NOAA's SIDNEY 1 S, OH US station, 5.4 miles from Shelby County, supplies the 5,911 HDD and 817 CDD this estimate runs on. By total degree days, Shelby County sits at the 66th percentile nationally. DOE also classifies Shelby County as moisture regime A (humid) - ask a local contractor whether that changes the vapor-barrier approach for this job.
Already have some insulation?
If Shelby County's attic already has 3-4 inches of old insulation (about R-11) rather than bare joists, the recommended target drops to R-49. That smaller top-up costs around $2,280 and saves an estimated $250/year — payback about 9.1 years. It is close - the payback only just fits a reasonable timeframe.
Quotes and materials for this job
Get more than one quote before committing. Attic access and any needed air sealing move the price around, and most contractors won't take a job below roughly $600 regardless of size - worth asking upfront given Shelby County's estimated $1,712/year on the line.
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.