Marion County, WV Insulation Payback
Marion County attic insulation, by the numbers
Marion 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. 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 2.3 years at an estimated $1,486/year saved. Topping up the attic pays for itself fast here.
Where the savings come from
Split it out and it's roughly $1,341 a year on the heating side, $144 on cooling. By estimated insulation savings, Marion County lands in the 52th percentile nationally. Zone 5 alone covers 745 counties in this dataset, and Marion County comes in 728th by savings. West Virginia averages $1,526/year across the counties tracked here; Marion County comes in 3% lower.
The climate data behind this
Marion County's climate figures — 5,017 heating and 897 cooling degree days a year — are read from FAIRMONT, WV US, 6.6 miles away, NOAA's nearest 1991-2020 normals station. Combined heating and cooling load puts Marion County in the 50th percentile of this 3,162-county dataset. One local detail the R-value alone won't tell you: Marion County sits in moisture regime A (humid), which can affect the vapor-barrier choice.
The smaller top-up scenario
If Marion 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 $217/year — payback about 10.5 years. Call this borderline rather than a clear win.
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 Marion County, not a bid - contractors typically charge a $600 minimum regardless of job size.
Where these figures come from
Marion 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.