Caledonia County, VT Insulation Payback
Is attic insulation worth it in Caledonia County, VT?
DOE classifies Caledonia County as climate zone 6, cold — cold enough that heating, not cooling, is what decides the bill. Its recommended attic R-value for bare joists is 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 $2,072 a year in heating and cooling — a payback around 1.7 years. Few home upgrades pay back that quickly.
The breakdown behind the number
Heating accounts for about $2,002/year of that and cooling about $69/year — Caledonia County needs both. Nationally, Caledonia County ranks in the 85th percentile for insulation savings potential. Compared only against its own climate zone, Caledonia County places 323rd out of 459. Against Vermont's own average of $2,179/year, Caledonia County runs 5% below that.
The climate data behind this
NOAA's SAINT JOHNSBURY, VT US station, 5.7 miles from Caledonia County, supplies the 7,488 HDD and 432 CDD this estimate runs on. Combined heating and cooling load puts Caledonia County in the 85th 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 Caledonia 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 $302/year — payback about 7.5 years. The math clears comfortably within a normal ownership horizon.
Getting it done in Caledonia County
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 Caledonia County's estimated $2,072/year on the line.
Caledonia County's numbers, sourced
The methodology guide lists exactly which DOE and NOAA sources feed Caledonia 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.