Heat Pump Payback in Star, ID
Heat pump vs. gas furnace in Star, ID
In Star, a heat pump would cost more to run each year than what you have now. Against a like-for-like gas furnace and AC swap, going electric costs $5,500 more up front here. The heat pump would cost about $92 more a year to run than the furnace it replaces, a premium with no payback. There's no spin on that: Star's numbers say wait.
Not the city you meant?
This runs the same numbers for 3206 US cities, not just Star. Look one up here.
Why Star's climate drives this number
Star has a cold winter that leans hard on heating equipment, 5220 heating degree days a year against a 65°F base, and summers are hot enough that cooling matters as much as heating, at 1130 cooling degree days. 8.1°F is the figure equipment gets sized against here, the 99th-percentile cold snap, not an average day, with a low of -5.1°F in the 2024 station record. Worked through the model, that's a seasonal COP of 2.89 on the cold-climate unit fit for this climate. Star needs the cold-climate class of unit: past a 25°F design temperature a standard heat pump falls back on resistance backup often enough to eat the savings. These numbers come from Caldwell Industrial Airport, the closest NOAA station, 7.9 miles out.
What it actually costs to run, year to year
Electricity use for heating alone comes out to about 4,574 kWh a year on the 2000-square-foot reference house; folding in cooling puts the electric bill near $693 a year. That compares with roughly 54 Mcf a year of gas at Star's $7.69 per-Mcf rate, about $601 a year with the old AC included, against a local electricity rate of 12.52¢/kWh. With running costs higher every year, there is no payback at any purchase price; over 15 years, against a like-for-like replacement, a household here would end $6,877 behind.
The break-even point in Star
The heat pump would become the cheaper option in Star if electricity fell to 10.3¢/kWh (from 12.52¢) or gas rose above $9.38 per Mcf (from $7.69). At today's prices a cheaper quote cannot rescue the gas comparison in Star, since there is no yearly saving to recover it from.
Electric resistance heat in Star, compared
Plenty of homes in Star 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 $1,145 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 8.7 years.
Star against the rest of the country
Star lands at position 551 out of 3206 cities on heating severity (coldest is 1), and 2071 out of 3206 by population size (biggest is 1). 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 Star
About 18,208 people live in Star, Idaho, 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.
Get quotes from local HVAC contractors before deciding.
Reading further on this page's numbers
Nothing above is a black box: the methodology guide shows the full arithmetic behind Star's 2.89 seasonal COP and payback figure. Star's 8.1°F design temperature falls on the cold side of the 25°F cutoff the cold-climate unit guide walks through.