Androscoggin County, ME Insulation Payback
Is attic insulation worth it in Androscoggin County, ME?
Androscoggin County sits in IECC climate zone 6 (Cold) — a real winter that drives most of the annual energy bill here. For a currently uninsulated attic, DOE and ENERGY STAR recommend building up to R-60. Topping up a typical 1,000-square-foot attic from bare joists (R-2) to R-60 runs an estimated $3,480, and saves about $2,022 a year in heating and cooling — a payback around 1.7 years. Few home upgrades pay back that quickly.
Heating vs. cooling in Androscoggin County
Heating accounts for about $1,944/year of that and cooling about $78/year — Androscoggin County needs both. Nationally, Androscoggin County ranks in the 83th percentile for insulation savings potential. Compared only against its own climate zone, Androscoggin County places 377th out of 459. Against Maine's own average of $2,159/year, Androscoggin County runs 6% below that.
Where these numbers come from
The heating and cooling degree days behind this estimate — 7,271 HDD and 485 CDD (base 65°F, 1991-2020 normals) — come from LEWISTON, ME US, the nearest NOAA station with published normals, 4.7 miles from Androscoggin County's center. Combined heating and cooling load puts Androscoggin County in the 83th 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.
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 $295/year saved (~7.7-year payback). The math clears comfortably within a normal ownership horizon.
Quotes and materials for this job
Get more than one quote before committing. Attic access and any needed air sealing move the price around, and most contractors won't take a job below roughly $600 regardless of size - worth asking upfront given Androscoggin County's estimated $2,022/year on the line.
Androscoggin County's numbers, sourced
The methodology guide lists exactly which DOE and NOAA sources feed Androscoggin 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.