Heat Pump Payback in Brookfield, IL
Heat pump vs. gas furnace in Brookfield, IL
In Brookfield, a heat pump would cost more to run each year than what you have now. 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 $151 more a year to run than the furnace it replaces, a premium with no payback. That's Brookfield's own climate and rates talking, not a hedge or a caveat.
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Brookfield's weather, in the numbers that matter
4543 heating degree days pile up here every year, so Brookfield has a real but manageable winter; the cooling side runs to 1348 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: 1.9°F here (coldest 2024 reading -9°F), which works out to a seasonal COP of 2.75 for the cold-climate class of unit this climate calls for. A cold-climate unit is the right call in Brookfield, below 25°F design temperature, a standard heat pump leans hard on electric-resistance backup, which erases most of the savings. These numbers come from Chicago Midway International Airport, the closest NOAA station, 5.6 miles out.
What it actually costs to run, year to year
Modelled on a typical 2000-square-foot house, the heat pump draws about 4,183 kWh a year to keep it warm, plus cooling, for a combined electric bill near $1,016 a year. Brookfield's gas rate of $11.25 per Mcf, applied to the 47 Mcf a year the furnace burns, puts the current furnace-and-AC running cost near $865 a year, against 19.06¢ per kWh for electricity. Because the heat pump costs more to run here, the gap only widens with time: $7,767 behind after 15 years compared with replacing the furnace and AC like-for-like.
How sensitive Brookfield's result is to prices
For the verdict in Brookfield to flip, electricity would need to drop to about 14.8¢/kWh from 19.06¢, or gas climb past $14.44 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 Brookfield; the case for one here rests on comfort, cooling, or replacing electric heat instead.
Electric resistance heat in Brookfield, compared
Plenty of homes in Brookfield heat with electricity alone, no gas line involved. Swap the comparison to resistance heat instead of gas, and Brookfield's answer improves. Switching saves about $1,509 a year here, a heat pump moving heat rather than generating it needs far less electricity than resistance coils, so the extra $10,000 spent up front comes back in about 6.6 years.
Brookfield against the rest of the country
Among 3206 cities, Brookfield's winter puts it at rank 1156 for severity, while its size puts it at rank 2021 for population, 1 in both cases being the extreme. That's the middle third for winter severity among the cities covered here.
Next step if you live in Brookfield
Brookfield, Illinois is home to about 18,885 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 Brookfield, nothing is lost by holding off until the current equipment genuinely fails.
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 Brookfield's 2.75 seasonal COP and payback figure. At a 1.9°F design temperature, Brookfield sits in cold-climate territory; the guide to that class of unit explains why.