Colorado County, TX Insulation Payback
Colorado County attic insulation, by the numbers
Colorado County, Texas is zone 2 under DOE's climate map (Hot-Humid), which means summers that stay hot and humid while winters barely register on the energy bill. An uninsulated attic there should be built up to R-49. For an attic around 1,000 square feet, closing the gap from R-2 to R-49 costs around $2,820 and saves an estimated $888 a year — payback in roughly 3.2 years. Topping up the attic pays for itself here.
Heating vs. cooling in Colorado County
Split it out and it's roughly $413 a year on the heating side, $476 on cooling. By estimated insulation savings, Colorado County lands in the 9th percentile nationally. Zone 2 alone covers 233 counties in this dataset, and Colorado County comes in 55th by savings. Texas averages $1,035/year across the counties tracked here; Colorado County comes in 14% lower.
Colorado County's actual weather, not a national average
The heating and cooling degree days behind this estimate — 1,556 HDD and 2,984 CDD (base 65°F, 1991-2020 normals) — come from COLUMBUS, TX US, the nearest NOAA station with published normals, 8.1 miles from Colorado County's center. Combined heating and cooling load puts Colorado County in the 12th percentile of this 3,162-county dataset. One local detail the R-value alone won't tell you: Colorado County sits in moisture regime A (humid), which can affect the vapor-barrier choice.
Already have some insulation?
If Colorado 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 $120/year — payback about 13.5 years. Call this borderline rather than a clear win.
Getting it done in Colorado County
Real bids depend on how easy the attic is to reach and whether old insulation needs removing first, so treat $2,820 as a starting estimate for a Colorado County job, not a quote. Expect at least a $600 minimum charge from most contractors.
Where these figures come from
Colorado 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.