Renville County, MN Insulation Payback
Attic insulation payback for Renville County, MN
DOE classifies Renville County as climate zone 6, cold — cold enough that heating, not cooling, is what decides the bill. Its recommended attic R-value for bare joists is 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 $2,338 a year — payback in roughly 1.5 years. Hard to find a home improvement with a faster payback than this.
Heating vs. cooling in Renville County
Of that, about $2,256/year comes from reduced heating and $82/year from reduced cooling load through the ceiling. Renville County beats 94% of the counties in this 3,162-county dataset on estimated insulation savings. Among the 459 counties DOE places in zone 6, Renville County ranks 72nd. Against Minnesota's own average of $2,366/year, Renville County runs 1% below that.
The climate data behind this
NOAA's OLIVIA 3E, MN US station, 3 miles from Renville County, supplies the 8,436 HDD and 513 CDD this estimate runs on. Combined heating and cooling load puts Renville County in the 94th percentile of this 3,162-county dataset. DOE also classifies Renville 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 $341/year saved — roughly 6.7 years to break even. Topping up the attic pays for itself here.
Getting it done in Renville County
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 Renville County's estimated $2,338/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.