Should Oak Park switch to a heat pump?
Oak Park is a place where a heat pump genuinely costs more to operate than the alternative. Against a like-for-like gas furnace and AC swap, going electric costs $3,500 more up front here (already netting out a $2,000 tax credit). Unfortunately the electric bill outweighs the gas bill it replaces by about $265 a year here, so the extra spend stays unrecovered. That's Oak Park's own climate and rates talking, not a hedge or a caveat.
Oak Park's weather, in the numbers that matter
4971 heating degree days pile up here every year, so Oak Park has a real but manageable winter; the cooling side runs to 954 cooling degree days, where summers add a moderate cooling load. The 99% winter design temperature here — the cold snap equipment must be sized for, not the seasonal average — is 5.9°F, against a record low of -2.4°F. That puts the seasonal coefficient of performance at 2.84 for the recommended cold-climate unit. Oak Park needs the cold-climate class of unit: past a 25°F design temperature a standard heat pump falls back on resistance backup often enough to eat the savings. Climate figures trace to the nearest NOAA station, OAKLAND/TROY AIRPORT, 5.4 miles from Oak Park.
What it actually costs to run, year to year
Modelled on a typical 2000-square-foot house, the heat pump draws about 4,432 kWh a year to keep it warm, plus cooling, for a combined electric bill near $1,087 a year. The gas furnace it replaces burns roughly 52 Mcf a year at 10.92 per Mcf here, for a running cost near $822 a year (electricity here runs 20.72¢/kWh). 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 $7,480 behind.
If your home heats with electric baseboard instead of gas
Gas isn't universal in Oak Park — many houses run on electric heat already. Compared with baseboard or electric-furnace resistance heat, the numbers shift in the heat pump’s favor. The saving here runs about $1,777 a year, which recovers the extra $8,000 spent going electric in roughly 4.5 years.
Where Oak Park ranks in this dataset
Oak Park lands at position 758 out of 3206 cities on heating severity (coldest is 1), and 1371 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.
What to do with this number in Oak Park
Oak Park, Michigan is home to about 29,402 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 Oak Park, nothing is lost by holding off until the current equipment genuinely fails.
Ask a local HVAC contractor for a quote before committing either way.
Reading further on this page's numbers
Every constant behind this page — the 2.84 seasonal COP, the degree-day corrections, the equipment costs — is documented in the methodology guide. Oak Park's 5.9°F design temperature falls on the cold side of the 25°F cutoff the cold-climate unit guide walks through.