Pitkin County, CO Insulation Payback
Pitkin County attic insulation, by the numbers
Pitkin County, Colorado is zone 7 under DOE's climate map (Very Cold), which means a climate where the heating season stretches across most of the year. An uninsulated attic there should be built up to R-60. Going from R-2 to the recommended R-60 costs roughly $3,480 installed for a typical attic (about 1,000 sq ft), and pays for itself in about 1.6 years at an estimated $2,191/year saved. Topping up the attic pays for itself fast here.
Heating vs. cooling in Pitkin County
Split it out and it's roughly $2,177 a year on the heating side, $14 on cooling. By estimated insulation savings, Pitkin County lands in the 90th percentile nationally. Zone 7 alone covers 120 counties in this dataset, and Pitkin County comes in 114th by savings. Colorado averages $2,043/year across the counties tracked here; Pitkin County comes in 7% higher.
Where these numbers come from
NOAA's ASPEN PITKIN CO AP, CO US station, 2.6 miles from Pitkin County, supplies the 8,142 HDD and 90 CDD this estimate runs on. Combined heating and cooling load puts Pitkin County in the 88th percentile of this 3,162-county dataset.
If the attic isn't bare
A shallower starting point changes the math: with R-11 already down, only the gap to R-49 needs filling, at roughly $2,280 for an estimated $320/year saved (~7.1-year payback). Worth doing on the numbers alone.
Next steps for a Pitkin County attic
Real bids depend on how easy the attic is to reach and whether old insulation needs removing first, so treat $3,480 as a starting estimate for a Pitkin County job, not a quote. Expect at least a $600 minimum charge from most contractors.
Where these figures come from
Pitkin 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.