Houston County, TX Insulation Payback
Attic insulation payback for Houston County, TX
Houston County sits in IECC climate zone 2 (Hot-Humid) — humid heat for much of the year, with cooling running far more than heating ever does. For a currently uninsulated attic, DOE and ENERGY STAR recommend building up to R-49. Going from R-2 to the recommended R-49 costs roughly $2,820 installed for a typical attic (about 1,000 sq ft), and pays for itself in about 2.9 years at an estimated $970/year saved. Hard to find a home improvement with a faster payback than this.
Where the savings come from
Of that, about $558/year comes from reduced heating and $412/year from reduced cooling load through the ceiling. Houston County beats 14% of the counties in this 3,162-county dataset on estimated insulation savings. Among the 233 counties DOE places in zone 2, Houston County ranks 13th. Against Texas's own average of $1,035/year, Houston County runs 6% below that.
The climate data behind this
The heating and cooling degree days behind this estimate — 2,104 HDD and 2,583 CDD (base 65°F, 1991-2020 normals) — come from CROCKETT, TX US, the nearest NOAA station with published normals, 2 miles from Houston County's center. That combined heating-and-cooling load ranks Houston County 2647th nationally by total degree days — the 16th percentile. DOE also classifies Houston County as moisture regime A (humid) - 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 $131/year saved (~12.4-year payback). It is close - the payback only just fits a reasonable timeframe.
Quotes and materials for this job
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 Houston County's estimated $970/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.