Colfax County, NM Insulation Payback
Attic insulation payback for Colfax County, NM
Colfax County, New Mexico 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 $1,719 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 $1,667/year comes from reduced heating and $53/year from reduced cooling load through the ceiling. Colfax 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, Colfax County ranks 449th. Against New Mexico's own average of $1,423/year, Colfax County runs 21% above that.
Colfax County's actual weather, not a national average
NOAA's MAXWELL 3 NW, NM US station, 4.2 miles from Colfax County, supplies the 6,233 HDD and 328 CDD this estimate runs on. By total degree days, Colfax County sits at the 63th percentile nationally. DOE also classifies Colfax 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
If Colfax 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 $251/year — payback about 9.1 years. It is close - the payback only just fits a reasonable timeframe.
Getting it done in Colfax County
Real bids depend on how easy the attic is to reach and whether old insulation needs removing first, so treat $3,480 as a starting estimate for a Colfax County job, not a quote. Expect at least a $600 minimum charge from most contractors.
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.