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 $3,500 after a $2,000 federal tax credit. 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.
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 (record low -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 INTL ARPT, 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 its running cost near $865 a year, against 19.06¢ per kWh for electricity. Looked at as a full purchase rather than an incremental one, payback here is longer than the 15-year equipment life, leaving the 15-year total $5,767 behind.
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 $8,000 spent up front comes back in about 5.3 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 for 18,885 people 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.