Kings County, NY Insulation Payback
Kings County attic insulation, by the numbers
Kings County, New York is zone 4 under DOE's climate map (Mixed-Humid), which means heating load in winter and cooling load in summer, both worth taking seriously here. 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 $1,421 a year — payback in roughly 2.4 years. Topping up the attic pays for itself fast here.
The breakdown behind the number
Split it out and it's roughly $1,230 a year on the heating side, $191 on cooling. By estimated insulation savings, Kings County lands in the 47th percentile nationally. Zone 4 alone covers 825 counties in this dataset, and Kings County comes in 344th by savings. New York averages $1,948/year across the counties tracked here; Kings County comes in 27% lower.
The climate data behind this
Kings County's climate figures — 4,600 heating and 1,187 cooling degree days a year — are read from NY AVE V BROOKLYN, NY US, 3.3 miles away, NOAA's nearest 1991-2020 normals station. By total degree days, Kings County sits at the 47th percentile nationally. One local detail the R-value alone won't tell you: Kings County sits in moisture regime A (humid), which can affect the vapor-barrier choice.
The smaller top-up scenario
Already have a few inches up there? Topping R-11 up to R-49 runs about $2,280 for about $207/year saved — roughly 11 years to break even. Call this borderline rather than a clear win.
Next steps for a Kings 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 Kings County job, not a quote. Expect at least a $600 minimum charge from most contractors.
Where these figures come from
Kings 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.