Heat Pump Payback in Sedro-Woolley, WA
Heat pump vs. gas furnace in Sedro-Woolley, WA
Sedro-Woolley technically pencils out, but only past the point the equipment would need replacing anyway. 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 $340 saved annually, for a payback of roughly 16.2 years. Sedro-Woolley's own numbers say this pencils out only in theory, not in practice.
Compare against another city
This runs the same numbers for 3206 US cities, not just Sedro-Woolley. Look one up here.
The climate behind Sedro-Woolley's payback figure
5087 heating degree days pile up here every year, so Sedro-Woolley has a cold winter that leans hard on heating equipment; the cooling side runs to 50 cooling degree days, where summers rarely ask much of an air conditioner. The 99% winter design temperature here, the cold snap equipment must be sized for, not the seasonal average, is 15.8°F, and the coldest daily reading in the 2024 station record was 10.4°F. That puts the seasonal coefficient of performance at 3.08 for the recommended cold-climate unit. A cold-climate unit is the right call in Sedro-Woolley, below 25°F design temperature, a standard heat pump leans hard on electric-resistance backup, which erases most of the savings. These numbers come from Skagit Regional Airport, the closest NOAA station, 9 miles out.
Sedro-Woolley's running-cost comparison, in dollars
Modelled on a typical 2000-square-foot house, the heat pump draws about 4,182 kWh a year to keep it warm, plus cooling, for a combined electric bill near $603 a year. Sedro-Woolley's gas rate of $17.62 per Mcf, applied to the 53 Mcf a year the furnace burns, puts the current furnace-and-AC running cost near $943 a year, against 14.27¢ per kWh for electricity. 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 $402 behind.
What would change Sedro-Woolley's answer
This result holds unless electricity climbs above 22.4¢/kWh (it is 14.27¢ now) or gas drops below $11.20 per Mcf (now $17.62); past either point, gas becomes the cheaper fuel in Sedro-Woolley. When quotes arrive, compare the heat pump price with a like-for-like furnace and AC replacement: at $340 a year saved, a difference under $2,380 pays back within 7 years here, and under $3,400 within 10.
If your home heats with electric baseboard instead of gas
Gas isn't universal in Sedro-Woolley, many houses run on electric heat already. Swap the comparison to resistance heat instead of gas, and Sedro-Woolley's answer improves. The saving here runs about $1,244 a year, which recovers the extra $10,000 spent going electric in roughly 8 years.
How Sedro-Woolley compares nationally
Among 3206 cities, Sedro-Woolley's winter puts it at rank 605 for severity, while its size puts it at rank 2624 for population, 1 in both cases being the extreme. That's the coldest third of the dataset, where climate does most of the work behind this figure.
What to do with this number in Sedro-Woolley
About 13,215 people live in Sedro-Woolley, 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.
Ask a local HVAC contractor for a quote before committing either way.
Reading further on this page's numbers
The methodology guide walks through exactly how Sedro-Woolley's 3.08 seasonal COP and the rest of this page's numbers get built. At a 15.8°F design temperature, Sedro-Woolley sits in cold-climate territory; the guide to that class of unit explains why.