Sanpete County, UT Insulation Payback
Sanpete County, UT: what topping up your attic actually costs
Sanpete County sits in IECC climate zone 5 (Cold) — winters that dominate the energy bill, with cooling a minor factor. For a currently uninsulated attic, DOE and ENERGY STAR recommend building up to R-60. Going from R-2 to the recommended R-60 costs roughly $3,480 installed for a typical attic (about 1,000 sq ft), and pays for itself in about 1.8 years at an estimated $1,941/year saved. That's about as fast as attic paybacks get.
Heating vs. cooling in Sanpete County
The estimated savings split roughly $1,870/year heating, $71/year cooling. Out of every 100 US counties tracked here, Sanpete County's savings potential beats roughly 79 of them. Within zone 5 specifically, it ranks 106th of 745 counties by estimated savings. Utah averages $1,791/year across the counties tracked here; Sanpete County comes in 8% higher.
The climate data behind this
Sanpete County's climate figures — 6,993 heating and 441 cooling degree days a year — are read from EPHRAIM, UT US, 1.6 miles away, NOAA's nearest 1991-2020 normals station. Combined heating and cooling load puts Sanpete County in the 78th percentile of this 3,162-county dataset. Sanpete County falls in DOE's moisture regime B (dry), a detail that affects vapor-barrier recommendations more than the R-value target itself.
The smaller top-up scenario
A shallower starting point changes the math: with R-11 already down, only the gap to R-49 needs filling, at roughly $2,280 for an estimated $283/year saved (~8.1-year payback). This one is a genuine toss-up, not a clear yes.
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 $3,480 as a starting estimate for a Sanpete County job, not a quote. Expect at least a $600 minimum charge from most contractors.
Nothing here is a guess
Every figure on this page traces to DOE/IECC climate zones and NOAA degree-day normals, documented in the methodology guide. The guide to what R-value actually means explains why R-60 is the target here specifically.