Heat Pump Payback in Lynden, WA
Should Lynden switch to a heat pump?
The payback math works in Lynden on paper, past the equipment's own working life. Against a like-for-like gas furnace and AC swap, going electric costs $5,500 more up front here. Lower bills claw that back: about $335 saved annually, for a payback of roughly 16.4 years. That's a technicality, not a recommendation, for anyone actually living in Lynden.
Compare against another city
Landed on Lynden by mistake, or want to compare it against somewhere else? Search the other 3206 cities below.
Lynden's weather, in the numbers that matter
5289 heating degree days pile up here every year, so Lynden has a cold winter that leans hard on heating equipment; the cooling side runs to 63 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 12°F, and the coldest daily reading in the 2024 station record was 3°F. That puts the seasonal coefficient of performance at 2.99 for the recommended cold-climate unit. Below the 25°F line where a standard machine starts leaning on resistance backup, Lynden sits firmly in cold-climate territory, so that's the class of unit priced here. These numbers come from Bellingham International Airport, the closest NOAA station, 11.4 miles out.
What it actually costs to run, year to year
A 2000-square-foot house here would pull roughly 4,479 heating kilowatt-hours annually on top of cooling, totalling about $647 a year on electricity. The gas furnace it replaces burns roughly 55 Mcf a year at $17.62 per Mcf here, for a running cost near $982 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 $469 behind.
What would change Lynden's answer
Gas would only overtake the heat pump in Lynden if electricity rose past 21.8¢/kWh from 14.27¢, or gas fell under $11.53 per Mcf from $17.62. A useful quote test for Lynden: the heat pump is worth it within a decade if it costs less than $3,350 more than replacing the furnace and AC, and within 7 years if the gap is under $2,345.
Electric resistance heat in Lynden, compared
Plenty of homes in Lynden heat with electricity alone, no gas line involved. Against electric-resistance heat, baseboard or an electric furnace, both 100% efficient but still just resistance, the case for switching gets stronger here. Switching saves about $1,276 a year here, a heat pump moving heat rather than generating it needs far less electricity than resistance coils, so the extra $10,000 spent up front comes back in about 7.8 years.
How Lynden compares nationally
Among 3206 cities, Lynden's winter puts it at rank 492 for severity, while its size puts it at rank 2215 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.
Next step if you live in Lynden
Lynden, Washington is home to about 16,783 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 Lynden, nothing is lost by holding off until the current equipment genuinely fails.
Ask a local HVAC contractor for a quote before committing either way.
Reading further on this page's numbers
Every constant behind this page, the 2.99 seasonal COP, the degree-day corrections, the equipment costs, is documented in the methodology guide. Lynden's 12°F design temperature falls on the cold side of the 25°F cutoff the cold-climate unit guide walks through.