Normal, IL: the heat pump payback math
Normal is a place where a heat pump genuinely costs more to operate than the alternative. $3,500 is what Normal would pay extra to go electric rather than replace the furnace and AC with the same again, once the $2,000 federal credit is applied. Running costs here land $250 a year HIGHER than the furnace it replaces, so that premium is never recovered. That's Normal's own climate and rates talking, not a hedge or a caveat.
How cold Normal actually gets
Normal has a real but manageable winter — 4893 heating degree days a year against a 65°F base — and summers are hot enough that cooling matters as much as heating, at 1005 cooling degree days. The 99% winter design temperature here — the cold snap equipment must be sized for, not the seasonal average — is -4°F, against a record low of -14.1°F. That puts the seasonal coefficient of performance at 2.6 for the recommended cold-climate unit. A cold-climate unit is the right call in Normal — below 25°F design temperature, a standard heat pump leans hard on electric-resistance backup, which erases most of the savings. Climate figures trace to the nearest NOAA station, CENTRAL ILLINOIS REGIONAL AIR, 3.4 miles from Normal.
The month-to-month numbers for Normal
Electricity use for heating alone comes out to about 4,765 kWh a year on the 2000-square-foot reference house; folding in cooling puts the electric bill near $1,072 a year. That compares with roughly 51 Mcf a year of gas at Normal's 11.25 per-Mcf rate — about $822 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 $7,251 behind.
The other scenario: no gas furnace to begin with
Gas isn't universal in Normal — 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 $1,538 a year, which recovers the extra $8,000 spent going electric in roughly 5.2 years.
How Normal compares nationally
Ranked against the other 3206 cities covered, Normal comes in at 872 for heating severity — 1 would be the coldest place in the dataset — and 765 by population, where 1 is largest. That's the coldest third of the dataset, where climate does most of the work behind this figure.
Next step for 53,304 people in Normal
Normal, Illinois is home to about 53,304 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 Normal, nothing is lost by holding off until the current equipment genuinely fails.
Ask a local HVAC contractor for a quote before committing either way.
More on how this number was built
Every constant behind this page — the 2.6 seasonal COP, the degree-day corrections, the equipment costs — is documented in the methodology guide. Normal's -4°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.