Erie County, PA Insulation Payback
Is attic insulation worth it in Erie County, PA?
DOE classifies Erie County as climate zone 5, cold — a real winter that drives most of the annual energy bill here. Its recommended attic R-value for bare joists is 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 $1,700 a year — payback in roughly 2 years. Few home upgrades pay back that quickly.
Where the savings come from
Heating accounts for about $1,579/year of that and cooling about $121/year — Erie County needs both. Nationally, Erie County ranks in the 66th percentile for insulation savings potential. Compared only against its own climate zone, Erie County places 487th out of 745. Against Pennsylvania's own average of $1,724/year, Erie County runs 1% below that.
Where these numbers come from
Erie County's climate figures — 5,905 heating and 752 cooling degree days a year — are read from ERIE INTL AP, PA US, 5.1 miles away, NOAA's nearest 1991-2020 normals station. Combined heating and cooling load puts Erie County in the 65th percentile of this 3,162-county dataset. 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.
The smaller top-up scenario
If Erie 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 $248/year — payback about 9.2 years. Whether that is worth it depends on how long you plan to stay.
Quotes and materials for this job
Actual quotes will vary by attic access, existing debris, and whether the job needs air sealing first. Treat the $3,480 figure above as a planning number for Erie County, not a bid - contractors typically charge a $600 minimum regardless of job size.
Erie County's numbers, sourced
The methodology guide lists exactly which DOE and NOAA sources feed Erie 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.