Pulaski County, IL Insulation Payback
Is attic insulation worth it in Pulaski County, IL?
Pulaski County sits in IECC climate zone 4 (Mixed-Humid) — heating load in winter and cooling load in summer, both worth taking seriously here. For a currently uninsulated attic, DOE and ENERGY STAR recommend building up to R-60. For an attic around 1,000 square feet, closing the gap from R-2 to R-60 costs around $3,480 and saves an estimated $1,345 a year — payback in roughly 2.6 years. Few home upgrades pay back that quickly.
Heating vs. cooling in Pulaski County
Heating accounts for about $1,097/year of that and cooling about $248/year — Pulaski County needs both. Nationally, Pulaski County ranks in the 42th percentile for insulation savings potential. Compared only against its own climate zone, Pulaski County places 496th out of 825. Against Illinois's own average of $1,642/year, Pulaski County runs 18% below that.
The climate data behind this
NOAA's GRAND CHAIN DAM 53, IL US station, 4.8 miles from Pulaski County, supplies the 4,102 HDD and 1,546 CDD this estimate runs on. By total degree days, Pulaski County sits at the 43th percentile nationally. Its moisture regime is classified humid, which matters for whether the attic needs a vapor retarder as part of the job — worth asking a contractor about locally.
If the attic isn't bare
If Pulaski 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 $196/year — payback about 11.6 years. Whether that is worth it depends on how long you plan to stay.
Next steps for a Pulaski 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 Pulaski County job, not a quote. Expect at least a $600 minimum charge from most contractors.
Pulaski County's numbers, sourced
The methodology guide lists exactly which DOE and NOAA sources feed Pulaski County's numbers, and where the cost assumptions come from. See the DIY vs. contractor guide for whether a job this size is realistic to do yourself.