Heat Pump Payback in Auburn, WA
Heat pump vs. gas furnace in Auburn, WA
In Auburn, the extra upfront cost technically comes back, just not before the equipment wears out. $5,500 is what Auburn would pay extra to go electric rather than replace the furnace and AC with the same again. Auburn's residents would see roughly $252 a year back in running costs, putting the payback around 21.8 years. Auburn's own numbers say this pencils out only in theory, not in practice.
Compare against another city
Auburn is one of 3206 cities covered here, each run through the same model. Search another below.
Why Auburn's climate drives this number
Auburn has a real but manageable winter, 3501 heating degree days a year against a 65°F base, and summers rarely ask much of an air conditioner, at 58 cooling degree days. The 99% winter design temperature here, the cold snap equipment must be sized for, not the seasonal average, is 21.2°F, and the coldest daily reading in the 2024 station record was 16.7°F. That puts the seasonal coefficient of performance at 3.21 for the recommended cold-climate unit. Below the 25°F line where a standard machine starts leaning on resistance backup, Auburn sits firmly in cold-climate territory, so that's the class of unit priced here. Climate figures trace to the nearest NOAA station, Tacoma Met, 9.9 miles from Auburn.
What it actually costs to run, year to year
Electricity use for heating alone comes out to about 2,762 kWh a year on the 2000-square-foot reference house; folding in cooling puts the electric bill near $401 a year. The gas furnace it replaces burns roughly 36 Mcf a year at $17.62 per Mcf here, for a running cost near $653 a year including the old AC (electricity here runs 14.27¢/kWh). Priced as a standalone purchase, with a working furnace ripped out early, payback would take longer than the 15-year equipment life. Measured against the like-for-like replacement instead, a household here ends 15 years $1,720 behind.
What would change Auburn's answer
This result holds unless electricity climbs above 23.5¢/kWh (it is 14.27¢ now) or gas drops below $10.71 per Mcf (now $17.62); past either point, gas becomes the cheaper fuel in Auburn. When quotes arrive, compare the heat pump price with a like-for-like furnace and AC replacement: at $252 a year saved, a difference under $1,764 pays back within 7 years here, and under $2,520 within 10.
Electric resistance heat in Auburn, compared
Not every home in Auburn has gas service. Compared with baseboard or electric-furnace resistance heat, the numbers shift in the heat pump’s favor. About $875 a year comes back this way, enough that the 11.4-year payback clears the $10,000 premium comfortably within the equipment's life.
Auburn against the rest of the country
Among 3206 cities, Auburn's winter puts it at rank 1771 for severity, while its size puts it at rank 426 for population, 1 in both cases being the extreme. That's the middle third for winter severity among the cities covered here.
What to do with this number in Auburn
About 85,513 people live in Auburn, Washington, 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.
Where Auburn's figure comes from
Nothing above is a black box: the methodology guide shows the full arithmetic behind Auburn's 3.21 seasonal COP and payback figure. Auburn's 21.2°F design temperature is below the 25°F line, which is why a cold-climate unit is the right call here, see what that changes in the cold-climate unit guide.