Fitchburg, WI: the heat pump payback math
Here in Fitchburg, the honest answer is that a heat pump raises your annual running cost. 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 $403 more a year to run than the furnace it replaces — a premium with no payback. That's Fitchburg's own climate and rates talking, not a hedge or a caveat.
How cold Fitchburg actually gets
Degree days tell the story here: Fitchburg racks up 5775 heating degree days each year (base 65°F), and summers add a moderate cooling load, with 761 cooling degree days on the cooling side. -9°F is the figure equipment gets sized against here — the 99th-percentile cold snap, not an average day — with a record low of -11°F on file. Worked through the model, that's a seasonal COP of 2.48 on the cold-climate unit fit for this climate. Fitchburg 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. Source: NOAA station DANE CO REGIONAL-TRUAX FIELD, 11.5 miles from Fitchburg — the closest one on record.
The month-to-month numbers for Fitchburg
A 2000-square-foot house here would pull roughly 5,896 heating kilowatt-hours annually on top of cooling, totalling about $1,235 a year on electricity. The gas furnace it replaces burns roughly 60 Mcf a year at 10.74 per Mcf here, for a running cost near $832 a year (electricity here runs 18.87¢/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 $9,545 behind.
Electric resistance heat in Fitchburg, compared
Plenty of homes in Fitchburg heat with electricity alone, no gas line involved. Against electric-resistance heat — baseboard or an electric furnace, both 100% efficient but still just resistance — the case for switching gets stronger here. About $1,710 a year comes back this way, enough that the 4.7-year payback clears the $8,000 premium comfortably within the equipment's life.
How Fitchburg compares nationally
Ranked against the other 3206 cities covered, Fitchburg comes in at 286 for heating severity — 1 would be the coldest place in the dataset — and 1199 by population, where 1 is largest. 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 Fitchburg
Fitchburg, Wisconsin is home to about 34,357 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 Fitchburg, 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 Fitchburg's 2.48 seasonal COP and payback figure. Fitchburg's -9°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.