Garrett County, MD Insulation Payback
Attic insulation payback for Garrett County, MD
Garrett County, Maryland is zone 5 under DOE's climate map (Cold), which means a real winter that drives most of the annual energy bill 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 $1,834 a year — payback in roughly 1.9 years. Hard to find a home improvement with a faster payback than this.
Heating vs. cooling in Garrett County
Of that, about $1,797/year comes from reduced heating and $36/year from reduced cooling load through the ceiling. Garrett County beats 74% of the counties in this 3,162-county dataset on estimated insulation savings. Among the 745 counties DOE places in zone 5, Garrett County ranks 232nd. Against Maryland's own average of $1,395/year, Garrett County runs 31% above that.
Garrett County's actual weather, not a national average
Garrett County's climate figures — 6,721 heating and 227 cooling degree days a year — are read from SINES DEEP CREEK, MD US, 7.6 miles away, NOAA's nearest 1991-2020 normals station. Combined heating and cooling load puts Garrett County in the 70th percentile of this 3,162-county dataset. DOE also classifies Garrett County as moisture regime A (humid) - ask a local contractor whether that changes the vapor-barrier approach for this job.
Already have some insulation?
If Garrett County's attic already has 3-4 inches of old insulation (about R-11) rather than bare joists, the recommended target drops to R-49. That smaller top-up costs around $2,280 and saves an estimated $267/year — payback about 8.5 years. It is close - the payback only just fits a reasonable timeframe.
Getting it done in Garrett 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 Garrett County's estimated $1,834/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.