Should West Chicago switch to a heat pump?
Here in West Chicago, 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. The heat pump would cost about $295 more a year to run than the furnace it replaces — a premium with no payback. There's no spin on that: West Chicago's numbers say wait.
The climate behind West Chicago's payback figure
Degree days tell the story here: West Chicago racks up 5064 heating degree days each year (base 65°F), and summers add a moderate cooling load, with 915 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 -7.1°F, against a record low of -14.1°F. That puts the seasonal coefficient of performance at 2.53 for the recommended cold-climate unit. West Chicago 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 DUPAGE AIRPORT, the closest NOAA station, 1.9 miles out.
The month-to-month numbers for West Chicago
Modelled on a typical 2000-square-foot house, the heat pump draws about 5,068 kWh a year to keep it warm, plus cooling, for a combined electric bill near $1,115 a year. That compares with roughly 53 Mcf a year of gas at West Chicago's 11.25 per-Mcf rate — about $819 a year — against a local electricity rate of 19.06¢/kWh. Buy it outright, not incrementally, and payback stretches to beyond the 15-year equipment life; over 15 years the net position sits $7,930 behind.
If your home heats with electric baseboard instead of gas
Plenty of homes in West Chicago heat with electricity alone, no gas line involved. Compared with baseboard or electric-furnace resistance heat, the numbers shift in the heat pump’s favor. Switching saves about $1,555 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 5.1 years.
West Chicago against the rest of the country
West Chicago lands at position 637 out of 3206 cities on heating severity (coldest is 1), and 1574 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 25,469 people in West Chicago
About 25,469 people live in West Chicago, 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 West Chicago's figure comes from
Every constant behind this page — the 2.53 seasonal COP, the degree-day corrections, the equipment costs — is documented in the methodology guide. West Chicago's -7.1°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.