Vega Alta Municipio, PR Insulation Payback
Vega Alta Municipio attic insulation, by the numbers
Vega Alta Municipio, Puerto Rico is zone 1 under DOE's climate map (Hot-Humid), which means summers that stay hot and humid while winters barely register on the energy bill. An uninsulated attic there should be built up to R-30. For an attic around 1,000 square feet, closing the gap from R-2 to R-30 costs around $1,680 and saves an estimated $705 a year — payback in roughly 2.4 years. Topping up the attic pays for itself fast here.
Heating vs. cooling in Vega Alta Municipio
Split it out and it's roughly $0 a year on the heating side, $704 on cooling. By estimated insulation savings, Vega Alta Municipio lands in the 2th percentile nationally. Zone 1 alone covers 81 counties in this dataset, and Vega Alta Municipio comes in 42nd by savings. Puerto Rico averages $660/year across the counties tracked here; Vega Alta Municipio comes in 7% higher.
Where these numbers come from
Vega Alta Municipio's climate figures — 1 heating and 4,542 cooling degree days a year — are read from DORADO 2 WNW, PR RQ, 3.2 miles away, NOAA's nearest 1991-2020 normals station. Combined heating and cooling load puts Vega Alta Municipio in the 13th percentile of this 3,162-county dataset. One local detail the R-value alone won't tell you: Vega Alta Municipio sits in moisture regime A (humid), which can affect the vapor-barrier choice.
Already have some insulation?
Already have a few inches up there? Topping R-11 up to R-25 runs about $840 for about $77/year saved — roughly 10.9 years to break even. Call this borderline rather than a clear win.
Getting it done in Vega Alta Municipio
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 Vega Alta Municipio, not a bid - contractors typically charge a $600 minimum regardless of job size.
Where these figures come from
Vega Alta Municipio's R-30 target and its degree-day figures both come from named federal sources - see the methodology guide for exactly which ones. The guide to what R-value actually means explains why R-30 is the target here specifically.