Cheshire County, NH Insulation Payback
Cheshire County attic insulation, by the numbers
Cheshire County, New Hampshire is zone 5 under DOE's climate map (Cold), which means winters that dominate the energy bill, with cooling a minor factor. An uninsulated attic there should be built 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 $2,066 a year — payback in roughly 1.7 years. Topping up the attic pays for itself fast here.
The breakdown behind the number
Split it out and it's roughly $2,006 a year on the heating side, $60 on cooling. By estimated insulation savings, Cheshire County lands in the 85th percentile nationally. Zone 5 alone covers 745 counties in this dataset, and Cheshire County comes in 18th by savings. New Hampshire averages $2,071/year across the counties tracked here; Cheshire County comes in 0% higher.
Cheshire County's actual weather, not a national average
NOAA's KEENE, NH US station, 4 miles from Cheshire County, supplies the 7,501 HDD and 375 CDD this estimate runs on. Combined heating and cooling load puts Cheshire County in the 85th percentile of this 3,162-county dataset. One local detail the R-value alone won't tell you: Cheshire 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 $301/year saved — roughly 7.6 years to break even. Worth doing on the numbers alone.
Next steps for a Cheshire County attic
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 Cheshire County job, not a quote. Expect at least a $600 minimum charge from most contractors.
Where these figures come from
Cheshire 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.