Aguada Municipio, PR Insulation Payback
Attic insulation payback for Aguada Municipio, PR
Aguada Municipio, Puerto Rico is zone 1 under DOE's climate map (Hot-Humid), which means long, muggy summers and mild winters, where cooling dominates the energy bill. An uninsulated attic there should be built up to R-30. Topping up a typical 1,000-square-foot attic from bare joists (R-2) to R-30 runs an estimated $1,680, and saves about $762 a year in heating and cooling — a payback around 2.2 years. Hard to find a home improvement with a faster payback than this.
The breakdown behind the number
Of that, about $0/year comes from reduced heating and $762/year from reduced cooling load through the ceiling. Aguada Municipio beats 3% of the counties in this 3,162-county dataset on estimated insulation savings. Among the 81 counties DOE places in zone 1, Aguada Municipio ranks 25th. Against Puerto Rico's own average of $660/year, Aguada Municipio runs 15% above that.
Where these numbers come from
The heating and cooling degree days behind this estimate — 0 HDD and 4,912 CDD (base 65°F, 1991-2020 normals) — come from COLOSO, PR RQ, the nearest NOAA station with published normals, 1.9 miles from Aguada Municipio's center. That combined heating-and-cooling load ranks Aguada Municipio 2431st nationally by total degree days — the 23th percentile. DOE also classifies Aguada Municipio as moisture regime A (humid) - ask a local contractor whether that changes the vapor-barrier approach for this job.
The smaller top-up scenario
If Aguada Municipio's attic already has 3-4 inches of old insulation (about R-11) rather than bare joists, the recommended target drops to R-25. That smaller top-up costs around $840 and saves an estimated $83/year — payback about 10.1 years. It is close - the payback only just fits a reasonable timeframe.
Next steps for a Aguada Municipio attic
Actual quotes will vary by attic access, existing debris, and whether the job needs air sealing first. Treat the $1,680 figure above as a planning number for Aguada Municipio, not a bid - contractors typically charge a $600 minimum regardless of job size.
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.