Freeport, IL: the heat pump payback math

Here in Freeport, 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). Running costs here land $353 a year HIGHER than the furnace it replaces, so that premium is never recovered. That's Freeport's own climate and rates talking, not a hedge or a caveat.

Freeport's weather, in the numbers that matter

Freeport has a cold winter that leans hard on heating equipment — 5468 heating degree days a year against a 65°F base — and summers add a moderate cooling load, at 728 cooling degree days. Sizing runs off the design temperature, not the average day: -8.5°F here (record low -14.4°F), which works out to a seasonal COP of 2.5 for the cold-climate class of unit this climate calls for. Freeport 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. These numbers come from ALBERTUS AIRPORT, the closest NOAA station, 4 miles out.

What it actually costs to run, year to year

A 2000-square-foot house here would pull roughly 5,538 heating kilowatt-hours annually on top of cooling, totalling about $1,174 a year on electricity. The gas furnace it replaces burns roughly 57 Mcf a year at 11.25 per Mcf here, for a running cost near $820 a year (electricity here runs 19.06¢/kWh). Buy it outright, not incrementally, and payback stretches to beyond the 15-year equipment life; over 15 years the net position sits $8,801 behind.

If your home heats with electric baseboard instead of gas

Not every home in Freeport has gas service. Swap the comparison to resistance heat instead of gas, and Freeport's answer improves. Switching saves about $1,645 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 4.9 years.

Freeport against the rest of the country

Freeport lands at position 396 out of 3206 cities on heating severity (coldest is 1), and 1704 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 Freeport

Freeport, Illinois is home to about 23,140 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 Freeport, nothing is lost by holding off until the current equipment genuinely fails.

Ask a local HVAC contractor for a quote before committing either way.

Where Freeport's figure comes from

Nothing above is a black box: the methodology guide shows the full arithmetic behind Freeport's 2.5 seasonal COP and payback figure. Freeport's -8.5°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.