Randall County, TX Insulation Payback
Attic insulation payback for Randall County, TX
Randall County, Texas is zone 4 under DOE's climate map (Mixed-Dry), which means a wide swing between a hot dry summer and a cold winter. An uninsulated attic there should be built up to R-60. Going from R-2 to the recommended R-60 costs roughly $3,480 installed for a typical attic (about 1,000 sq ft), and pays for itself in about 2.6 years at an estimated $1,329/year saved. Hard to find a home improvement with a faster payback than this.
The breakdown behind the number
Of that, about $1,071/year comes from reduced heating and $257/year from reduced cooling load through the ceiling. Randall County beats 41% of the counties in this 3,162-county dataset on estimated insulation savings. Among the 825 counties DOE places in zone 4, Randall County ranks 526th. Against Texas's own average of $1,035/year, Randall County runs 28% above that.
Randall County's actual weather, not a national average
The heating and cooling degree days behind this estimate — 4,007 HDD and 1,603 CDD (base 65°F, 1991-2020 normals) — come from CANYON, TX US, the nearest NOAA station with published normals, 2.1 miles from Randall County's center. Combined heating and cooling load puts Randall County in the 42th percentile of this 3,162-county dataset. DOE also classifies Randall 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 Randall 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 $194/year — payback about 11.8 years. It is close - the payback only just fits a reasonable timeframe.
Next steps for a Randall 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 Randall County's estimated $1,329/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.