Heat Pump Payback in Washington, UT
Heat pump vs. gas furnace in Washington, UT
In Washington, the extra upfront cost technically comes back, just not before the equipment wears out. Against a like-for-like gas furnace and AC swap, going electric costs $5,500 more up front here. Lower bills claw that back: about $194 saved annually, for a payback of roughly 28.3 years. Washington's own numbers say this pencils out only in theory, not in practice.
Compare against another city
Landed on Washington by mistake, or want to compare it against somewhere else? Search the other 3206 cities below.
The climate behind Washington's payback figure
Washington has a real but manageable winter, 3006 heating degree days a year against a 65°F base, and summers are severe enough that cooling can dominate the annual bill, at 3290 cooling degree days. The 99% winter design temperature here, the cold snap equipment must be sized for, not the seasonal average, is 19°F, and the coldest daily reading in the 2024 station record was 17.1°F. That puts the seasonal coefficient of performance at 3.16 for the recommended cold-climate unit. Below the 25°F line where a standard machine starts leaning on resistance backup, Washington sits firmly in cold-climate territory, so that's the class of unit priced here. These numbers come from St George Municipal Airport, the closest NOAA station, 6.5 miles out.
Washington's running-cost comparison, in dollars
Electricity use for heating alone comes out to about 2,409 kWh a year on the 2000-square-foot reference house; folding in cooling puts the electric bill near $684 a year. The gas furnace it replaces burns roughly 31 Mcf a year at $10.19 per Mcf here, for a running cost near $878 a year including the old AC (electricity here runs 13.12¢/kWh). If the current system still worked and you replaced it anyway, the full cost would take longer than the 15-year equipment life to earn back; against buying a new furnace and AC regardless, the 15-year total lands $2,585 behind.
The break-even point in Washington
This result holds unless electricity climbs above 33.6¢/kWh (it is 13.12¢ now) or gas drops below $3.98 per Mcf (now $10.19); past either point, gas becomes the cheaper fuel in Washington. When quotes arrive, compare the heat pump price with a like-for-like furnace and AC replacement: at $194 a year saved, a difference under $1,358 pays back within 7 years here, and under $1,940 within 10.
The other scenario: no gas furnace to begin with
Not every home in Washington has gas service. Against electric-resistance heat, baseboard or an electric furnace, both 100% efficient but still just resistance, the case for switching gets stronger here. The saving here runs about $874 a year, which recovers the extra $10,000 spent going electric in roughly 11.4 years.
How Washington compares nationally
Washington lands at position 1925 out of 3206 cities on heating severity (coldest is 1), and 1157 out of 3206 by population size (biggest is 1). That's the middle third for winter severity among the cities covered here.
Deciding what's next in Washington, UT
About 35,501 people live in Washington, Utah, and every number on this page is what a contractor would actually work from when quoting a system here, the point isn't to replace that quote, it's to tell you whether to bother asking for one. Here, there's no cost penalty to waiting until your current furnace or AC actually needs replacing.
Line up a few local HVAC quotes before you decide.
Reading further on this page's numbers
Every constant behind this page, the 3.16 seasonal COP, the degree-day corrections, the equipment costs, is documented in the methodology guide. Washington's 19°F design temperature falls on the cold side of the 25°F cutoff the cold-climate unit guide walks through.