Miami County, KS Insulation Payback
Miami County attic insulation, by the numbers
DOE classifies Miami County as climate zone 4, mixed-humid — real heating and real cooling seasons both, roughly balanced across the year. 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 $1,559 a year in heating and cooling — a payback around 2.2 years. Topping up the attic pays for itself fast here.
Heating vs. cooling in Miami County
Split it out and it's roughly $1,337 a year on the heating side, $222 on cooling. By estimated insulation savings, Miami County lands in the 57th percentile nationally. Zone 4 alone covers 825 counties in this dataset, and Miami County comes in 86th by savings. Kansas averages $1,594/year across the counties tracked here; Miami County comes in 2% lower.
Miami County's actual weather, not a national average
The heating and cooling degree days behind this estimate — 4,999 HDD and 1,385 CDD (base 65°F, 1991-2020 normals) — come from PAOLA, KS US, the nearest NOAA station with published normals, 2.9 miles from Miami County's center. Combined heating and cooling load puts Miami County in the 59th percentile of this 3,162-county dataset. One local detail the R-value alone won't tell you: Miami County sits in moisture regime A (humid), which can affect the vapor-barrier choice.
If the attic isn't bare
Already have a few inches up there? Topping R-11 up to R-49 runs about $2,280 for about $227/year saved — roughly 10 years to break even. Call this borderline rather than a clear win.
Next steps for a Miami 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 Miami County job, not a quote. Expect at least a $600 minimum charge from most contractors.
Where these figures come from
Miami 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.