Pueblo County, CO Insulation Payback
Pueblo County attic insulation, by the numbers
Pueblo County, Colorado is zone 5 under DOE's climate map (Cold), which means cold enough that heating, not cooling, is what decides the bill. An uninsulated attic there should be built up to 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 $1,610 a year in heating and cooling — a payback around 2.2 years. Topping up the attic pays for itself fast here.
Where the savings come from
Split it out and it's roughly $1,440 a year on the heating side, $170 on cooling. By estimated insulation savings, Pueblo County lands in the 60th percentile nationally. Zone 5 alone covers 745 counties in this dataset, and Pueblo County comes in 633rd by savings. Colorado averages $2,043/year across the counties tracked here; Pueblo County comes in 21% lower.
Where these numbers come from
The heating and cooling degree days behind this estimate — 5,386 HDD and 1,060 CDD (base 65°F, 1991-2020 normals) — come from WFO PUEBLO, CO US, the nearest NOAA station with published normals, 8.3 miles from Pueblo County's center. By total degree days, Pueblo County sits at the 61th percentile nationally. One local detail the R-value alone won't tell you: Pueblo County sits in moisture regime B (dry), which can affect the vapor-barrier choice.
If the attic isn't bare
If Pueblo County's attic already has 3-4 inches of old insulation (about R-11) rather than bare joists, the recommended target drops to R-49. That smaller top-up costs around $2,280 and saves an estimated $235/year — payback about 9.7 years. Call this borderline rather than a clear win.
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 Pueblo County's estimated $1,610/year on the line.
Where these figures come from
Pueblo County's R-60 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-60 is the target here specifically.