Luquillo Municipio, PR Insulation Payback
Attic insulation payback for Luquillo Municipio, PR
DOE classifies Luquillo Municipio as climate zone 1, hot-humid — summers that stay hot and humid while winters barely register on the energy bill. Its recommended attic R-value for bare joists is 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 $166 a year in heating and cooling — a payback around 10.1 years. Call this borderline rather than a clear win.
Heating vs. cooling in Luquillo Municipio
Of that, about $96/year comes from reduced heating and $70/year from reduced cooling load through the ceiling. Luquillo Municipio beats 0% of the counties in this 3,162-county dataset on estimated insulation savings. Among the 81 counties DOE places in zone 1, Luquillo Municipio ranks 79th. Against Puerto Rico's own average of $660/year, Luquillo Municipio runs 75% below that.
The climate data behind this
The heating and cooling degree days behind this estimate — 372 HDD and 451 CDD (base 65°F, 1991-2020 normals) — come from PICO DEL ESTE, PR RQ, the nearest NOAA station with published normals, 7.5 miles from Luquillo Municipio's center. By total degree days, Luquillo Municipio sits at the 0th percentile nationally. DOE also classifies Luquillo Municipio as moisture regime A (humid) - ask a local contractor whether that changes the vapor-barrier approach for this job.
Already have some insulation?
Already have a few inches up there? Topping R-11 up to R-25 runs about $840 for about $18/year saved — roughly 46.4 years to break even. The payback here is longer than the analysis horizon.
Next steps for a Luquillo Municipio attic
Real bids depend on how easy the attic is to reach and whether old insulation needs removing first, so treat $1,680 as a starting estimate for a Luquillo Municipio 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. If Luquillo Municipio's own payback reads slow, the state rebate guide covers funding that could change that math.