Should Elmhurst switch to a heat pump?
Here in Elmhurst, the honest answer is that a heat pump raises your annual running cost. $3,500 is what Elmhurst 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 $240 more a year to run than the furnace it replaces — a premium with no payback. There's no spin on that: Elmhurst's numbers say wait.
Why Elmhurst's climate drives this number
Elmhurst has a real but manageable winter — 4837 heating degree days a year against a 65°F base — and summers are hot enough that cooling matters as much as heating, at 1162 cooling degree days. -5.1°F is the figure equipment gets sized against here — the 99th-percentile cold snap, not an average day — with a record low of -9.9°F on file. Worked through the model, that's a seasonal COP of 2.58 on the cold-climate unit fit for this climate. Below the 25°F line where a standard machine starts leaning on resistance backup, Elmhurst sits firmly in cold-climate territory, so that's the class of unit priced here. Source: NOAA station CHICAGO O'HARE INTERNATIONAL, 4.4 miles from Elmhurst — the closest one on record.
What it actually costs to run, year to year
Electricity use for heating alone comes out to about 4,747 kWh a year on the 2000-square-foot reference house; folding in cooling puts the electric bill near $1,094 a year. The gas furnace it replaces burns roughly 50 Mcf a year at 11.25 per Mcf here, for a running cost near $854 a year (electricity here runs 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 $7,099 behind.
If your home heats with electric baseboard instead of gas
Not every home in Elmhurst has gas service. Compared with baseboard or electric-furnace resistance heat, the numbers shift in the heat pump’s favor. Switching saves about $1,528 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.
Where Elmhurst ranks in this dataset
Among 3206 cities, Elmhurst's winter puts it at rank 906 for severity, while its size puts it at rank 891 for population — 1 in both cases being the extreme. That's the coldest third of the dataset, where climate does most of the work behind this figure.
Deciding what's next in Elmhurst, IL
About 46,108 people live in Elmhurst, 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
Nothing above is a black box: the methodology guide shows the full arithmetic behind Elmhurst's 2.58 seasonal COP and payback figure. At a -5.1°F design temperature, Elmhurst sits in cold-climate territory; the guide to that class of unit explains why.