Hockley County, TX Insulation Payback
Hockley County, TX: what topping up your attic actually costs
DOE classifies Hockley County as climate zone 4, mixed-dry — dry heat in summer giving way to a properly cold winter. Its recommended attic R-value for bare joists is R-60. Topping up a typical 1,000-square-foot attic from bare joists (R-2) to R-60 runs an estimated $3,480, and saves about $1,218 a year in heating and cooling — a payback around 2.9 years. That's about as fast as attic paybacks get.
Where the savings come from
The estimated savings split roughly $962/year heating, $257/year cooling. Out of every 100 US counties tracked here, Hockley County's savings potential beats roughly 32 of them. Within zone 4 specifically, it ranks 728th of 825 counties by estimated savings. Texas averages $1,035/year across the counties tracked here; Hockley County comes in 18% higher.
The climate data behind this
The heating and cooling degree days behind this estimate — 3,597 HDD and 1,598 CDD (base 65°F, 1991-2020 normals) — come from LEVELLAND, TX US, the nearest NOAA station with published normals, 4.3 miles from Hockley County's center. By total degree days, Hockley County sits at the 31th percentile nationally. Hockley County falls in DOE's moisture regime B (dry), a detail that affects vapor-barrier recommendations more than the R-value target itself.
Already have some insulation?
Already have a few inches up there? Topping R-11 up to R-49 runs about $2,280 for about $178/year saved — roughly 12.8 years to break even. This one is a genuine toss-up, not a clear yes.
Next steps for a Hockley County attic
Actual quotes will vary by attic access, existing debris, and whether the job needs air sealing first. Treat the $3,480 figure above as a planning number for Hockley County, not a bid - contractors typically charge a $600 minimum regardless of job size.
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-60 is the target here specifically.