McCurtain County, OK Insulation Payback
Is attic insulation worth it in McCurtain County, OK?
DOE classifies McCurtain County as climate zone 3, mixed-humid — heating load in winter and cooling load in summer, both worth taking seriously here. Its recommended attic R-value for bare joists is R-49. Topping up a typical 1,000-square-foot attic from bare joists (R-2) to R-49 runs an estimated $2,820, and saves about $1,124 a year in heating and cooling — a payback around 2.5 years. Few home upgrades pay back that quickly.
Heating vs. cooling in McCurtain County
Heating accounts for about $817/year of that and cooling about $307/year — McCurtain County needs both. Nationally, McCurtain County ranks in the 26th percentile for insulation savings potential. Compared only against its own climate zone, McCurtain County places 203rd out of 690. Against Oklahoma's own average of $1,260/year, McCurtain County runs 11% below that.
Where these numbers come from
The heating and cooling degree days behind this estimate — 3,079 HDD and 1,927 CDD (base 65°F, 1991-2020 normals) — come from BROKEN BOW 1 N, OK US, the nearest NOAA station with published normals, 4.9 miles from McCurtain County's center. By total degree days, McCurtain County sits at the 26th percentile nationally. 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.
The smaller top-up scenario
Already have a few inches up there? Topping R-11 up to R-38 runs about $1,620 for about $151/year saved — roughly 10.7 years to break even. Whether that is worth it depends on how long you plan to stay.
Getting it done in McCurtain County
Actual quotes will vary by attic access, existing debris, and whether the job needs air sealing first. Treat the $2,820 figure above as a planning number for McCurtain County, not a bid - contractors typically charge a $600 minimum regardless of job size.
McCurtain County's numbers, sourced
The methodology guide lists exactly which DOE and NOAA sources feed McCurtain 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.