Heat Pump Payback in Algonquin, IL
Heat pump vs. gas furnace in Algonquin, IL
Here in Algonquin, 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 $5,500. 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: Algonquin's numbers say wait.
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Why Algonquin's climate drives this number
5064 heating degree days pile up here every year, so Algonquin has a cold winter that leans hard on heating equipment; the cooling side runs to 915 cooling degree days, where summers add a moderate cooling load. -7.1°F is the figure equipment gets sized against here, the 99th-percentile cold snap, not an average day, with a low of -14.1°F in the 2024 station record. Worked through the model, that's a seasonal COP of 2.53 on the cold-climate unit fit for this climate. Below the 25°F line where a standard machine starts leaning on resistance backup, Algonquin sits firmly in cold-climate territory, so that's the class of unit priced here. These numbers come from Dupage Airport, the closest NOAA station, 17.4 miles out.
Algonquin's running-cost comparison, in dollars
A 2000-square-foot house here would pull roughly 5,068 heating kilowatt-hours annually on top of cooling, totalling about $1,115 a year on electricity. That compares with roughly 53 Mcf a year of gas at Algonquin's $11.25 per-Mcf rate, about $819 a year with the old AC included, against a local electricity rate of 19.06¢/kWh. With running costs higher every year, there is no payback at any purchase price; over 15 years, against a like-for-like replacement, a household here would end $9,930 behind.
How sensitive Algonquin's result is to prices
The heat pump would become the cheaper option in Algonquin if electricity fell to 12.7¢/kWh (from 19.06¢) or gas rose above $16.85 per Mcf (from $11.25). At today's prices a cheaper quote cannot rescue the gas comparison in Algonquin, since there is no yearly saving to recover it from.
Electric resistance heat in Algonquin, compared
Not every home in Algonquin has gas service. Compared with baseboard or electric-furnace resistance heat, the numbers shift in the heat pump’s favor. About $1,555 a year comes back this way, enough that the 6.4-year payback clears the $10,000 premium comfortably within the equipment's life.
How Algonquin compares nationally
Algonquin lands at position 633 out of 3206 cities on heating severity (coldest is 1), and 1336 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 if you live in Algonquin
About 30,539 people live in Algonquin, 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 Algonquin'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. Algonquin'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.