Parker County, TX Insulation Payback
Parker County attic insulation, by the numbers
Parker County sits in IECC climate zone 3 (Hot-Humid) — long, muggy summers and mild winters, where cooling dominates the energy bill. 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 2.6 years at an estimated $1,080/year saved. Topping up the attic pays for itself fast here.
Heating vs. cooling in Parker County
Split it out and it's roughly $700 a year on the heating side, $381 on cooling. By estimated insulation savings, Parker County lands in the 23th percentile nationally. Zone 3 alone covers 690 counties in this dataset, and Parker County comes in 288th by savings. Texas averages $1,035/year across the counties tracked here; Parker County comes in 4% higher.
Parker County's actual weather, not a national average
NOAA's WEATHERFORD, TX US station, 2.9 miles from Parker County, supplies the 2,637 HDD and 2,388 CDD this estimate runs on. By total degree days, Parker County sits at the 27th percentile nationally. One local detail the R-value alone won't tell you: Parker County sits in moisture regime A (humid), which can affect the vapor-barrier choice.
The smaller top-up scenario
If Parker 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 $145/year — payback about 11.1 years. Call this borderline rather than a clear win.
Getting it done in Parker 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 Parker County's estimated $1,080/year on the line.
Where these figures come from
Parker County's R-49 target and its degree-day figures both come from named federal sources - see the methodology guide for exactly which ones. The guide to what R-value actually means explains why R-49 is the target here specifically.