Lincoln County, ID Insulation Payback
Attic insulation payback for Lincoln County, ID
Lincoln County, Idaho is zone 5 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. 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 $2,040 a year — payback in roughly 1.7 years. Hard to find a home improvement with a faster payback than this.
The breakdown behind the number
Of that, about $1,962/year comes from reduced heating and $78/year from reduced cooling load through the ceiling. Lincoln County beats 84% of the counties in this 3,162-county dataset on estimated insulation savings. Among the 745 counties DOE places in zone 5, Lincoln County ranks 26th. Against Idaho's own average of $1,995/year, Lincoln County runs 2% above that.
Where these numbers come from
Lincoln County's climate figures — 7,336 heating and 488 cooling degree days a year — are read from RICHFIELD, ID US, 4.2 miles away, NOAA's nearest 1991-2020 normals station. That combined heating-and-cooling load ranks Lincoln County 514th nationally by total degree days — the 84th percentile. DOE also classifies Lincoln County as moisture regime B (dry) - ask a local contractor whether that changes the vapor-barrier approach for this job.
Already have some insulation?
Already have a few inches up there? Topping R-11 up to R-49 runs about $2,280 for about $298/year saved — roughly 7.7 years to break even. Topping up the attic pays for itself here.
Next steps for a Lincoln County attic
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 Lincoln County's estimated $2,040/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.