Heat pump vs. gas furnace in Park Forest, IL
Park Forest is a place where a heat pump genuinely costs more to operate than the alternative. $3,500 is what Park Forest 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. The heat pump would cost about $278 more a year to run than the furnace it replaces — a premium with no payback. There's no spin on that: Park Forest's numbers say wait.
Why Park Forest's climate drives this number
Degree days tell the story here: Park Forest racks up 4971 heating degree days each year (base 65°F), and summers add a moderate cooling load, with 864 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 -5.3°F, against a record low of -10.7°F. That puts the seasonal coefficient of performance at 2.57 for the recommended cold-climate unit. Below the 25°F line where a standard machine starts leaning on resistance backup, Park Forest sits firmly in cold-climate territory, so that's the class of unit priced here. Source: NOAA station LANSING MUNICIPAL AP, 9 miles from Park Forest — the closest one on record.
What it actually costs to run, year to year
Modelled on a typical 2000-square-foot house, the heat pump draws about 4,898 kWh a year to keep it warm, plus cooling, for a combined electric bill near $1,074 a year. That compares with roughly 52 Mcf a year of gas at Park Forest's 11.25 per-Mcf rate — about $796 a year — against a local electricity rate of 19.06¢/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 $7,671 behind.
If your home heats with electric baseboard instead of gas
Plenty of homes in Park Forest 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 $1,539 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 5.2 years.
How Park Forest compares nationally
Ranked against the other 3206 cities covered, Park Forest comes in at 767 for heating severity — 1 would be the coldest place in the dataset — and 1846 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 Park Forest, IL
About 21,016 people live in Park Forest, 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.
Line up a few local HVAC quotes before you decide.
Reading further on this page's numbers
The methodology guide walks through exactly how Park Forest's 2.57 seasonal COP and the rest of this page's numbers get built. Park Forest's -5.3°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.