Heat Pump Payback in Glen Ellyn, IL
Heat pump vs. gas furnace in Glen Ellyn, IL
Glen Ellyn is a place where a heat pump genuinely costs more to operate than the alternative. $5,500 is what Glen Ellyn would pay extra to go electric rather than replace the furnace and AC with the same again. Running costs here land $240 a year higher than the furnace it replaces, so that premium is never recovered. That's Glen Ellyn's own climate and rates talking, not a hedge or a caveat.
Compare against another city
This runs the same numbers for 3206 US cities, not just Glen Ellyn. Look one up here.
Glen Ellyn's weather, in the numbers that matter
4837 heating degree days pile up here every year, so Glen Ellyn has a real but manageable winter; the cooling side runs to 1162 cooling degree days, where summers are hot enough that cooling matters as much as heating. Sizing runs off the design temperature, not the average day: -5.1°F here (coldest 2024 reading -9.9°F), which works out to a seasonal COP of 2.58 for the cold-climate class of unit this climate calls for. Below the 25°F line where a standard machine starts leaning on resistance backup, Glen Ellyn sits firmly in cold-climate territory, so that's the class of unit priced here. These numbers come from Chicago O'Hare International, the closest NOAA station, 9.3 miles out.
What it actually costs to run, year to year
A 2000-square-foot house here would pull roughly 4,747 heating kilowatt-hours annually on top of cooling, totalling about $1,094 a year on electricity. 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 including the old AC (electricity here runs 19.06¢/kWh). Because the heat pump costs more to run here, the gap only widens with time: $9,099 behind after 15 years compared with replacing the furnace and AC like-for-like.
What would change Glen Ellyn's answer
For the verdict in Glen Ellyn to flip, electricity would need to drop to about 13.4¢/kWh from 19.06¢, or gas climb past $16.01 per Mcf from $11.25. A utility offering a lower heat pump rate can change this. Until then, no quote price makes a heat pump pay back against gas in Glen Ellyn; the case for one here rests on comfort, cooling, or replacing electric heat instead.
The other scenario: no gas furnace to begin with
Not every home in Glen Ellyn has gas service. Swap the comparison to resistance heat instead of gas, and Glen Ellyn's answer improves. About $1,528 a year comes back this way, enough that the 6.5-year payback clears the $10,000 premium comfortably within the equipment's life.
Where Glen Ellyn ranks in this dataset
Among 3206 cities, Glen Ellyn's winter puts it at rank 913 for severity, while its size puts it at rank 1389 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.
What to do with this number in Glen Ellyn
Glen Ellyn, Illinois is home to about 28,872 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 Glen Ellyn, 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 Glen Ellyn's figure comes from
Nothing above is a black box: the methodology guide shows the full arithmetic behind Glen Ellyn's 2.58 seasonal COP and payback figure. Glen Ellyn's -5.1°F design temperature falls on the cold side of the 25°F cutoff the cold-climate unit guide walks through.