Heat Pump Payback in Snohomish, WA
Is a heat pump worth it in Snohomish?
The payback math works in Snohomish on paper, past the equipment's own working life. $5,500 is what Snohomish would pay extra to go electric rather than replace the furnace and AC with the same again. Lower bills claw that back: about $318 saved annually, for a payback of roughly 17.3 years. That's a technicality, not a recommendation, for anyone actually living in Snohomish.
Compare against another city
This runs the same numbers for 3206 US cities, not just Snohomish. Look one up here.
How cold Snohomish actually gets
Snohomish has a real but manageable winter, 4489 heating degree days a year against a 65°F base, and summers rarely ask much of an air conditioner, at 200 cooling degree days. The 99% winter design temperature here, the cold snap equipment must be sized for, not the seasonal average, is 18°F, and the coldest daily reading in the 2024 station record was 12.9°F. That puts the seasonal coefficient of performance at 3.13 for the recommended cold-climate unit. Snohomish needs the cold-climate class of unit: past a 25°F design temperature a standard heat pump falls back on resistance backup often enough to eat the savings. Climate figures trace to the nearest NOAA station, Snohomish Co (Paine Fd) AP, 8.8 miles from Snohomish.
Snohomish's running-cost comparison, in dollars
Electricity use for heating alone comes out to about 3,632 kWh a year on the 2000-square-foot reference house; folding in cooling puts the electric bill near $543 a year. The gas furnace it replaces burns roughly 47 Mcf a year at $17.62 per Mcf here, for a running cost near $861 a year including the old AC (electricity here runs 14.27¢/kWh). Buying outright rather than at replacement time stretches payback to longer than the 15-year equipment life. Over 15 years, compared with a like-for-like replacement, the heat pump leaves you $727 behind.
The break-even point in Snohomish
Gas would only overtake the heat pump in Snohomish if electricity rose past 23.3¢/kWh from 14.27¢, or gas fell under $10.81 per Mcf from $17.62. A useful quote test for Snohomish: the heat pump is worth it within a decade if it costs less than $3,180 more than replacing the furnace and AC, and within 7 years if the gap is under $2,226.
Electric resistance heat in Snohomish, compared
Plenty of homes in Snohomish heat with electricity alone, no gas line involved. Swap the comparison to resistance heat instead of gas, and Snohomish's answer improves. About $1,116 a year comes back this way, enough that the 9-year payback clears the $10,000 premium comfortably within the equipment's life.
Where Snohomish ranks in this dataset
Snohomish lands at position 1213 out of 3206 cities on heating severity (coldest is 1), and 3083 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 Snohomish, WA
Snohomish, Washington is home to about 10,534 people, and the figures above are the same ones a local HVAC contractor uses to size and quote a system, this site doesn't guess where a real quote would land, it just tells you whether it's worth asking for one. In Snohomish, nothing is lost by holding off until the current equipment genuinely fails.
Ask a local HVAC contractor for a quote before committing either way.
More on how this number was built
The methodology guide walks through exactly how Snohomish's 3.13 seasonal COP and the rest of this page's numbers get built. Snohomish's 18°F design temperature falls on the cold side of the 25°F cutoff the cold-climate unit guide walks through.