Heat Pump Payback in Fife, WA
Is a heat pump worth it in Fife?
Fife technically pencils out, but only past the point the equipment would need replacing anyway. $5,500 is what Fife would pay extra to go electric rather than replace the furnace and AC with the same again. Lower bills claw that back: about $252 saved annually, for a payback of roughly 21.8 years. That's a technicality, not a recommendation, for anyone actually living in Fife.
Not the city you meant?
This runs the same numbers for 3206 US cities, not just Fife. Look one up here.
How cold Fife actually gets
3501 heating degree days pile up here every year, so Fife has a real but manageable winter; the cooling side runs to 58 cooling degree days, where summers rarely ask much of an air conditioner. 21.2°F is the figure equipment gets sized against here, the 99th-percentile cold snap, not an average day, with a low of 16.7°F in the 2024 station record. Worked through the model, that's a seasonal COP of 3.21 on the cold-climate unit fit for this climate. A cold-climate unit is the right call in Fife, below 25°F design temperature, a standard heat pump leans hard on electric-resistance backup, which erases most of the savings. Source: NOAA station Tacoma Met, 4.4 miles from Fife, the closest one on record.
The yearly running costs in Fife
Modelled on a typical 2000-square-foot house, the heat pump draws about 2,762 kWh a year to keep it warm, plus cooling, for a combined electric bill near $401 a year. Fife's gas rate of $17.62 per Mcf, applied to the 36 Mcf a year the furnace burns, puts the current furnace-and-AC running cost near $653 a year, against 14.27¢ per kWh for electricity. 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.
How sensitive Fife's result is to prices
Gas would only overtake the heat pump in Fife if electricity rose past 23.5¢/kWh from 14.27¢, or gas fell under $10.71 per Mcf from $17.62. A useful quote test for Fife: the heat pump is worth it within a decade if it costs less than $2,520 more than replacing the furnace and AC, and within 7 years if the gap is under $1,764.
If your home heats with electric baseboard instead of gas
Gas isn't universal in Fife, many houses run on electric heat already. Against electric-resistance heat, baseboard or an electric furnace, both 100% efficient but still just resistance, the case for switching gets stronger here. 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.
Fife against the rest of the country
Fife lands at position 1773 out of 3206 cities on heating severity (coldest is 1), and 2974 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 Fife, WA
Fife, Washington is home to about 11,077 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 Fife, nothing is lost by holding off until the current equipment genuinely fails.
Ask a local HVAC contractor for a quote before committing either way.
Where Fife's figure comes from
The methodology guide walks through exactly how Fife's 3.21 seasonal COP and the rest of this page's numbers get built. At a 21.2°F design temperature, Fife sits in cold-climate territory; the guide to that class of unit explains why.