Hunt County, TX Insulation Payback
Hunt County, TX: what topping up your attic actually costs
DOE classifies Hunt County as climate zone 3, hot-humid — humid heat for much of the year, with cooling running far more than heating ever does. Its recommended attic R-value for bare joists is 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 2.6 years at an estimated $1,067/year saved. That's about as fast as attic paybacks get.
The breakdown behind the number
The estimated savings split roughly $627/year heating, $439/year cooling. Out of every 100 US counties tracked here, Hunt County's savings potential beats roughly 22 of them. Within zone 3 specifically, it ranks 316th of 690 counties by estimated savings. Texas averages $1,035/year across the counties tracked here; Hunt County comes in 3% higher.
The climate data behind this
Hunt County's climate figures — 2,365 heating and 2,755 cooling degree days a year — are read from GREENVILLE KGVL RADIO, TX US, 3.2 miles away, NOAA's nearest 1991-2020 normals station. Combined heating and cooling load puts Hunt County in the 29th percentile of this 3,162-county dataset. Hunt County falls in DOE's moisture regime A (humid), a detail that affects vapor-barrier recommendations more than the R-value target itself.
If the attic isn't bare
If Hunt County's attic already has 3-4 inches of old insulation (about R-11) rather than bare joists, the recommended target drops to R-38. That smaller top-up costs around $1,620 and saves an estimated $144/year — payback about 11.3 years. This one is a genuine toss-up, not a clear yes.
Getting it done in Hunt 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 Hunt County's estimated $1,067/year on the line.
Nothing here is a guess
Every figure on this page traces to DOE/IECC climate zones and NOAA degree-day normals, documented in the methodology guide. The guide to what R-value actually means explains why R-49 is the target here specifically.