Heat pump vs. gas furnace in Gurnee, IL
Gurnee is a place where a heat pump genuinely costs more to operate than the alternative. $3,500 is what Gurnee would pay extra to go electric rather than replace the furnace and AC with the same again, once the $2,000 federal credit is applied. Unfortunately the electric bill outweighs the gas bill it replaces by about $269 a year here, so the extra spend stays unrecovered. There's no spin on that: Gurnee's numbers say wait.
The climate behind Gurnee's payback figure
Degree days tell the story here: Gurnee racks up 5324 heating degree days each year (base 65°F), and summers add a moderate cooling load, with 777 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 -0.9°F, against a record low of -11°F. That puts the seasonal coefficient of performance at 2.68 for the recommended cold-climate unit. Below the 25°F line where a standard machine starts leaning on resistance backup, Gurnee sits firmly in cold-climate territory, so that's the class of unit priced here. These numbers come from WAUKEGAN REGIONAL AIRPORT, the closest NOAA station, 4.8 miles out.
What it actually costs to run, year to year
Modelled on a typical 2000-square-foot house, the heat pump draws about 5,030 kWh a year to keep it warm, plus cooling, for a combined electric bill near $1,085 a year. The gas furnace it replaces burns roughly 55 Mcf a year at 11.25 per Mcf here, for a running cost near $816 a year (electricity here runs 19.06¢/kWh). Looked at as a full purchase rather than an incremental one, payback here is longer than the 15-year equipment life, leaving the 15-year total $7,540 behind.
Electric resistance heat in Gurnee, compared
Gas isn't universal in Gurnee — many houses run on electric heat already. Compared with baseboard or electric-furnace resistance heat, the numbers shift in the heat pump’s favor. About $1,676 a year comes back this way, enough that the 4.8-year payback clears the $8,000 premium comfortably within the equipment's life.
Where Gurnee ranks in this dataset
Ranked against the other 3206 cities covered, Gurnee comes in at 463 for heating severity — 1 would be the coldest place in the dataset — and 1335 by population, where 1 is largest. That's the coldest third of the dataset, where climate does most of the work behind this figure.
Deciding what's next in Gurnee, IL
About 30,546 people live in Gurnee, Illinois, 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.
Where Gurnee's figure comes from
Nothing above is a black box: the methodology guide shows the full arithmetic behind Gurnee's 2.68 seasonal COP and payback figure. Gurnee's -0.9°F design temperature falls on the cold side of the 25°F cutoff the cold-climate unit guide walks through.