Will a heat pump pay off in Kuna, ID?

Here in Kuna, the honest answer is that a heat pump raises your annual running cost. 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. Running costs here land $73 a year HIGHER than the furnace it replaces, so that premium is never recovered. That's Kuna's own climate and rates talking, not a hedge or a caveat.

Kuna's weather, in the numbers that matter

Degree days tell the story here: Kuna 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. The 99% winter design temperature here — the cold snap equipment must be sized for, not the seasonal average — is 12.2°F, against a record low of -4°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, Kuna sits firmly in cold-climate territory, so that's the class of unit priced here. These numbers come from NAMPA MUNICIPAL AIRPORT, the closest NOAA station, 7.1 miles out.

The month-to-month numbers for Kuna

Modelled on a typical 2000-square-foot house, the heat pump draws about 4,456 kWh a year to keep it warm, plus cooling, for a combined electric bill near $681 a year. That compares with roughly 55 Mcf a year of gas at Kuna's 7.69 per-Mcf rate — about $608 a year — against a local electricity rate of 12.52¢/kWh. Buy it outright, not incrementally, and payback stretches to beyond the 15-year equipment life; over 15 years the net position sits $4,588 behind.

The other scenario: no gas furnace to begin with

Not every home in Kuna has gas service. 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 $1,174 a year here — a heat pump moving heat rather than generating it needs far less electricity than resistance coils — so the extra $8,000 spent up front comes back in about 6.8 years.

Kuna against the rest of the country

Ranked against the other 3206 cities covered, Kuna comes in at 535 for heating severity — 1 would be the coldest place in the dataset — and 1380 by population, where 1 is largest. 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 Kuna

Kuna, Idaho is home to about 29,127 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 Kuna, nothing is lost by holding off until the current equipment genuinely fails.

Ask a local HVAC contractor for a quote before committing either way.

Where Kuna's figure comes from

Every constant behind this page — the 2.99 seasonal COP, the degree-day corrections, the equipment costs — is documented in the methodology guide. Kuna's 12.2°F design temperature falls on the cold side of the 25°F cutoff the cold-climate unit guide walks through.