Lyon County, KS Insulation Payback
Attic insulation payback for Lyon County, KS
Lyon County sits in IECC climate zone 4 (Mixed-Humid) — real heating and real cooling seasons both, roughly balanced across the year. 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 $1,611 a year in heating and cooling — a payback around 2.2 years. Hard to find a home improvement with a faster payback than this.
Heating vs. cooling in Lyon County
Of that, about $1,413/year comes from reduced heating and $198/year from reduced cooling load through the ceiling. Lyon County beats 60% of the counties in this 3,162-county dataset on estimated insulation savings. Among the 825 counties DOE places in zone 4, Lyon County ranks 43rd. Against Kansas's own average of $1,594/year, Lyon County runs 1% above that.
The climate data behind this
Lyon County's climate figures — 5,284 heating and 1,235 cooling degree days a year — are read from EMPORIA 3 NW, KS US, 3.6 miles away, NOAA's nearest 1991-2020 normals station. By total degree days, Lyon County sits at the 62th percentile nationally. DOE also classifies Lyon County as moisture regime A (humid) - ask a local contractor whether that changes the vapor-barrier approach for this job.
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 $235/year saved — roughly 9.7 years to break even. It is close - the payback only just fits a reasonable timeframe.
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 Lyon County's estimated $1,611/year on the line.
More on how this was built
Nothing here is a guess: the methodology guide names the DOE climate map and NOAA station data behind every number on this page. See the DIY vs. contractor guide for whether a job this size is realistic to do yourself.