Should Eagle switch to a heat pump?

Here in Eagle, the honest answer is that a heat pump raises your annual running cost. Against a like-for-like gas furnace and AC swap, going electric costs $3,500 more up front here (already netting out a $2,000 tax credit). The heat pump would cost about $73 more a year to run than the furnace it replaces — a premium with no payback. There's no spin on that: Eagle's numbers say wait.

The climate behind Eagle's payback figure

Degree days tell the story here: Eagle racks up 5262 heating degree days each year (base 65°F), and summers are hot enough that cooling matters as much as heating, with 1152 cooling degree days on the cooling side. 12.2°F is the figure equipment gets sized against here — the 99th-percentile cold snap, not an average day — with a record low of -4°F on file. Worked through the model, that's a seasonal COP of 2.99 on the cold-climate unit fit for this climate. A cold-climate unit is the right call in Eagle — 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 NAMPA MUNICIPAL AIRPORT, the closest NOAA station, 10 miles out.

The month-to-month numbers for Eagle

Electricity use for heating alone comes out to about 4,456 kWh a year on the 2000-square-foot reference house; folding in cooling puts the electric bill near $681 a year. That compares with roughly 55 Mcf a year of gas at Eagle's 7.69 per-Mcf rate — about $608 a year — against a local electricity rate of 12.52¢/kWh. Priced as a standalone purchase rather than against a like-for-like replacement, equipment payback runs past the 15-year equipment life, for a 15-year net position $4,588 behind.

Electric resistance heat in Eagle, compared

Gas isn't universal in Eagle — many houses run on electric heat already. Compared with baseboard or electric-furnace resistance heat, the numbers shift in the heat pump’s favor. The saving here runs about $1,174 a year, which recovers the extra $8,000 spent going electric in roughly 6.8 years.

How Eagle compares nationally

Eagle lands at position 534 out of 3206 cities on heating severity (coldest is 1), and 1230 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.

Next step for 33,451 people in Eagle

About 33,451 people live in Eagle, 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.

More on how this number was built

Nothing above is a black box: the methodology guide shows the full arithmetic behind Eagle's 2.99 seasonal COP and payback figure. Eagle's 12.2°F design temperature is below the 25°F line, which is why a cold-climate unit is the right call here — see what that changes in the cold-climate unit guide.