Should Liberty Lake switch to a heat pump?
In Liberty Lake, the math is close enough that it comes down to how long you plan to stay. Swap a failed furnace and AC for a heat pump rather than buying like-for-like, and the extra cost here runs $3,500 after a $2,000 federal tax credit. That premium is recovered through $311 of lower running costs every year, landing the payback clock at roughly 11.3 years. Whether that's worth it in Liberty Lake depends on how many years you expect to own the place.
The climate behind Liberty Lake's payback figure
Liberty Lake has a cold winter that leans hard on heating equipment — 5519 heating degree days a year against a 65°F base — and summers add a moderate cooling load, at 804 cooling degree days. -2°F is the figure equipment gets sized against here — the 99th-percentile cold snap, not an average day — with a record low of -8°F on file. Worked through the model, that's a seasonal COP of 2.65 on the cold-climate unit fit for this climate. A cold-climate unit is the right call in Liberty Lake — below 25°F design temperature, a standard heat pump leans hard on electric-resistance backup, which erases most of the savings. Climate figures trace to the nearest NOAA station, FELTS FIELD AIRPORT, 10.1 miles from Liberty Lake.
The month-to-month numbers for Liberty Lake
A 2000-square-foot house here would pull roughly 5,274 heating kilowatt-hours annually on top of cooling, totalling about $850 a year on electricity. The gas furnace it replaces burns roughly 57 Mcf a year at 17.62 per Mcf here, for a running cost near $1,161 a year (electricity here runs 14.27¢/kWh). Priced as a standalone purchase rather than against a like-for-like replacement, equipment payback runs about 43.4 years, for a 15-year net position $1,167 ahead.
The other scenario: no gas furnace to begin with
Not every home in Liberty Lake has gas service. Swap the comparison to resistance heat instead of gas, and Liberty Lake's answer improves. The saving here runs about $1,293 a year, which recovers the extra $8,000 spent going electric in roughly 6.2 years.
Where Liberty Lake ranks in this dataset
Ranked against the other 3206 cities covered, Liberty Lake comes in at 363 for heating severity — 1 would be the coldest place in the dataset — and 2605 by population, where 1 is largest. That's the coldest third of the dataset, where climate does most of the work behind this figure.
Next step for 13,353 people in Liberty Lake
About 13,353 people live in Liberty Lake, 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.
Where Liberty Lake's figure comes from
The methodology guide walks through exactly how Liberty Lake's 2.65 seasonal COP and the rest of this page's numbers get built. Liberty Lake's -2°F design temperature falls on the cold side of the 25°F cutoff the cold-climate unit guide walks through.