Heat pump vs. gas furnace in Columbia, IL
Here in Columbia, the honest answer is that a heat pump raises your annual running cost. 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 $70 a year here, so the extra spend stays unrecovered. There's no spin on that: Columbia's numbers say wait.
Why Columbia's climate drives this number
3639 heating degree days pile up here every year, so Columbia has a real but manageable winter; the cooling side runs to 1688 cooling degree days, where summers are hot enough that cooling matters as much as heating. 1.9°F is the figure equipment gets sized against here — the 99th-percentile cold snap, not an average day — with a record low of -5.1°F on file. Worked through the model, that's a seasonal COP of 2.75 on the cold-climate unit fit for this climate. Below the 25°F line where a standard machine starts leaning on resistance backup, Columbia sits firmly in cold-climate territory, so that's the class of unit priced here. These numbers come from ST LOUIS DOWNTOWN AIRPORT, the closest NOAA station, 8.4 miles out.
Columbia's running-cost comparison, in dollars
A 2000-square-foot house here would pull roughly 3,351 heating kilowatt-hours annually on top of cooling, totalling about $913 a year on electricity. That compares with roughly 38 Mcf a year of gas at Columbia's 11.25 per-Mcf rate — about $843 a year — against a local electricity rate of 19.06¢/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 $4,545 behind.
Electric resistance heat in Columbia, compared
Gas isn't universal in Columbia — many houses run on electric heat already. Against electric-resistance heat — baseboard or an electric furnace, both 100% efficient but still just resistance — the case for switching gets stronger here. The saving here runs about $1,260 a year, which recovers the extra $8,000 spent going electric in roughly 6.3 years.
Columbia against the rest of the country
Columbia lands at position 1721 out of 3206 cities on heating severity (coldest is 1), and 3001 out of 3206 by population size (biggest is 1). That's the middle third for winter severity among the cities covered here.
Next step for 10,919 people in Columbia
About 10,919 people live in Columbia, 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.
More on how this number was built
Nothing above is a black box: the methodology guide shows the full arithmetic behind Columbia's 2.75 seasonal COP and payback figure. At a 1.9°F design temperature, Columbia sits in cold-climate territory; the guide to that class of unit explains why.