Heat Pump Payback in Kelso, WA
Is a heat pump worth it in Kelso?
The payback math works in Kelso on paper, past the equipment's own working life. Swap a failed furnace and AC for a heat pump rather than buying like-for-like, and the extra cost here runs $5,500. Lower bills claw that back: about $328 saved annually, for a payback of roughly 16.8 years. That's a technicality, not a recommendation, for anyone actually living in Kelso.
Not the city you meant?
Kelso is one of 3206 cities covered here, each run through the same model. Search another below.
How cold Kelso actually gets
Degree days tell the story here: Kelso racks up 4565 heating degree days each year (base 65°F), and summers rarely ask much of an air conditioner, with 190 cooling degree days on the cooling side. 19°F is the figure equipment gets sized against here, the 99th-percentile cold snap, not an average day, with a low of 10°F in the 2024 station record. Worked through the model, that's a seasonal COP of 3.16 on the cold-climate unit fit for this climate. Below the 25°F line where a standard machine starts leaning on resistance backup, Kelso sits firmly in cold-climate territory, so that's the class of unit priced here. Source: NOAA station Kelso-Longview Airport, 0.4 miles from Kelso, the closest one on record.
The yearly running costs in Kelso
A 2000-square-foot house here would pull roughly 3,658 heating kilowatt-hours annually on top of cooling, totalling about $545 a year on electricity. Kelso's gas rate of $17.62 per Mcf, applied to the 48 Mcf a year the furnace burns, puts the current furnace-and-AC running cost near $873 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 $584 behind.
How sensitive Kelso's result is to prices
Gas would only overtake the heat pump in Kelso if electricity rose past 23.4¢/kWh from 14.27¢, or gas fell under $10.73 per Mcf from $17.62. A useful quote test for Kelso: the heat pump is worth it within a decade if it costs less than $3,280 more than replacing the furnace and AC, and within 7 years if the gap is under $2,296.
The other scenario: no gas furnace to begin with
Not every home in Kelso has gas service. Swap the comparison to resistance heat instead of gas, and Kelso's answer improves. About $1,140 a year comes back this way, enough that the 8.8-year payback clears the $10,000 premium comfortably within the equipment's life.
Where Kelso ranks in this dataset
Kelso lands at position 1125 out of 3206 cities on heating severity (coldest is 1), and 2688 out of 3206 by population size (biggest is 1). That's the middle third for winter severity among the cities covered here.
What to do with this number in Kelso
Kelso, Washington is home to about 12,737 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 Kelso, 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 Kelso's figure comes from
Every constant behind this page, the 3.16 seasonal COP, the degree-day corrections, the equipment costs, is documented in the methodology guide. At a 19°F design temperature, Kelso sits in cold-climate territory; the guide to that class of unit explains why.