Maury County, TN Insulation Payback
Attic insulation payback for Maury County, TN
Maury County, Tennessee is zone 4 under DOE's climate map (Mixed-Humid), which means heating load in winter and cooling load in summer, both worth taking seriously here. An uninsulated attic there should be built up to 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 $1,273 a year — payback in roughly 2.7 years. Hard to find a home improvement with a faster payback than this.
Where the savings come from
Of that, about $1,047/year comes from reduced heating and $226/year from reduced cooling load through the ceiling. Maury County beats 37% of the counties in this 3,162-county dataset on estimated insulation savings. Among the 825 counties DOE places in zone 4, Maury County ranks 634th. Against Tennessee's own average of $1,258/year, Maury County runs 1% above that.
The climate data behind this
Maury County's climate figures — 3,915 heating and 1,408 cooling degree days a year — are read from COLUMBIA 3 WNW, TN US, 1.6 miles away, NOAA's nearest 1991-2020 normals station. Combined heating and cooling load puts Maury County in the 35th percentile of this 3,162-county dataset. DOE also classifies Maury 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 $186/year saved — roughly 12.3 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 Maury County's estimated $1,273/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.