Worth County, MO Insulation Payback
Is attic insulation worth it in Worth County, MO?
Worth County, Missouri 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. 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 $1,805 a year in heating and cooling — a payback around 1.9 years. Few home upgrades pay back that quickly.
Heating vs. cooling in Worth County
Heating accounts for about $1,658/year of that and cooling about $146/year — Worth County needs both. Nationally, Worth County ranks in the 73th percentile for insulation savings potential. Compared only against its own climate zone, Worth County places 284th out of 745. Against Missouri's own average of $1,534/year, Worth County runs 18% above that.
Worth County's actual weather, not a national average
The heating and cooling degree days behind this estimate — 6,201 HDD and 912 CDD (base 65°F, 1991-2020 normals) — come from GRANT CITY, MO US, the nearest NOAA station with published normals, 0.5 miles from Worth County's center. Combined heating and cooling load puts Worth County in the 74th 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.
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 $263/year saved — roughly 8.7 years to break even. Whether that is worth it depends on how long you plan to stay.
Quotes and materials for this job
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 Worth County job, not a quote. Expect at least a $600 minimum charge from most contractors.
Worth County's numbers, sourced
The methodology guide lists exactly which DOE and NOAA sources feed Worth 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.