Henderson County, TX Insulation Payback
Attic insulation payback for Henderson County, TX
Henderson County sits in IECC climate zone 3 (Hot-Humid) — long, muggy summers and mild winters, where cooling dominates the energy bill. For a currently uninsulated attic, DOE and ENERGY STAR recommend building up to R-49. For an attic around 1,000 square feet, closing the gap from R-2 to R-49 costs around $2,820 and saves an estimated $1,014 a year — payback in roughly 2.8 years. Hard to find a home improvement with a faster payback than this.
Where the savings come from
Of that, about $610/year comes from reduced heating and $403/year from reduced cooling load through the ceiling. Henderson County beats 18% of the counties in this 3,162-county dataset on estimated insulation savings. Among the 690 counties DOE places in zone 3, Henderson County ranks 439th. Against Texas's own average of $1,035/year, Henderson County runs 2% below that.
The climate data behind this
NOAA's ATHENS, TX US station, 3.6 miles from Henderson County, supplies the 2,301 HDD and 2,529 CDD this estimate runs on. Combined heating and cooling load puts Henderson County in the 21th percentile of this 3,162-county dataset. DOE also classifies Henderson 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-38 runs about $1,620 for about $137/year saved — roughly 11.9 years to break even. It is close - the payback only just fits a reasonable timeframe.
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 $2,820 as a starting estimate for a Henderson County job, not a quote. Expect at least a $600 minimum charge from most contractors.
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.