Upton County, TX Insulation Payback
Attic insulation payback for Upton County, TX
DOE classifies Upton County as climate zone 3, hot-dry — intense summer heat with low humidity, where attic radiant heat gain is the main driver. Its recommended attic R-value for bare joists is R-49. For an attic around 1,000 square feet, closing the gap from R-2 to R-49 costs around $2,820 and saves an estimated $1,017 a year — payback in roughly 2.8 years. Hard to find a home improvement with a faster payback than this.
The breakdown behind the number
Of that, about $562/year comes from reduced heating and $455/year from reduced cooling load through the ceiling. Upton County beats 18% of the counties in this 3,162-county dataset on estimated insulation savings. Among the 690 counties DOE places in zone 3, Upton County ranks 436th. Against Texas's own average of $1,035/year, Upton County runs 2% below that.
Where these numbers come from
The heating and cooling degree days behind this estimate — 2,118 HDD and 2,855 CDD (base 65°F, 1991-2020 normals) — come from MCCAMEY, TX US, the nearest NOAA station with published normals, 18.6 miles from Upton County's center. Combined heating and cooling load puts Upton County in the 25th percentile of this 3,162-county dataset. DOE also classifies Upton 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-38 needs filling, at roughly $1,620 for an estimated $137/year saved (~11.8-year payback). It is close - the payback only just fits a reasonable timeframe.
Next steps for a Upton 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 Upton County's estimated $1,017/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.