San Miguel County, CO Insulation Payback
Attic insulation payback for San Miguel County, CO
San Miguel County sits in IECC climate zone 6 (Cold) — cold enough that heating, not cooling, is what decides the bill. For a currently uninsulated attic, DOE and ENERGY STAR recommend building 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 $1,878 a year — payback in roughly 1.9 years. Hard to find a home improvement with a faster payback than this.
The breakdown behind the number
Of that, about $1,835/year comes from reduced heating and $43/year from reduced cooling load through the ceiling. San Miguel County beats 77% of the counties in this 3,162-county dataset on estimated insulation savings. Among the 459 counties DOE places in zone 6, San Miguel County ranks 444th. Against Colorado's own average of $2,043/year, San Miguel County runs 8% below that.
Where these numbers come from
San Miguel County's climate figures — 6,862 heating and 268 cooling degree days a year — are read from NORWOOD, CO US, 11.4 miles away, NOAA's nearest 1991-2020 normals station. That combined heating-and-cooling load ranks San Miguel County 822nd nationally by total degree days — the 74th percentile. DOE also classifies San Miguel County as moisture regime B (dry) - 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 $274/year saved (~8.3-year payback). It is close - the payback only just fits a reasonable timeframe.
Getting it done in San Miguel County
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 San Miguel County's estimated $1,878/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.