Perry County, PA Insulation Payback
Perry County attic insulation, by the numbers
Perry County sits in IECC climate zone 5 (Cold) — winters that dominate the energy bill, with cooling a minor factor. 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 $1,606 a year — payback in roughly 2.2 years. Topping up the attic pays for itself fast here.
The breakdown behind the number
Split it out and it's roughly $1,482 a year on the heating side, $124 on cooling. By estimated insulation savings, Perry County lands in the 60th percentile nationally. Zone 5 alone covers 745 counties in this dataset, and Perry County comes in 638th by savings. Pennsylvania averages $1,724/year across the counties tracked here; Perry County comes in 7% lower.
Perry County's actual weather, not a national average
The heating and cooling degree days behind this estimate — 5,543 HDD and 773 CDD (base 65°F, 1991-2020 normals) — come from BLOSERVILLE 1 N, PA US, the nearest NOAA station with published normals, 10.6 miles from Perry County's center. Combined heating and cooling load puts Perry County in the 58th percentile of this 3,162-county dataset. One local detail the R-value alone won't tell you: Perry County sits in moisture regime A (humid), which can affect the vapor-barrier choice.
Already have some insulation?
Already have a few inches up there? Topping R-11 up to R-49 runs about $2,280 for about $234/year saved — roughly 9.7 years to break even. Call this borderline rather than a clear win.
Getting it done in Perry County
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 Perry County job, not a quote. Expect at least a $600 minimum charge from most contractors.
Where these figures come from
Perry 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.