Middleton, WI: the heat pump payback math
In Middleton, a heat pump would cost more to run each year than what you have now. 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 $403 a year HIGHER than the furnace it replaces, so that premium is never recovered. That's Middleton's own climate and rates talking, not a hedge or a caveat.
How cold Middleton actually gets
5775 heating degree days pile up here every year, so Middleton has a cold winter that leans hard on heating equipment; the cooling side runs to 761 cooling degree days, where summers add a moderate cooling load. Sizing runs off the design temperature, not the average day: -9°F here (record low -11°F), which works out to a seasonal COP of 2.48 for the cold-climate class of unit this climate calls for. Below the 25°F line where a standard machine starts leaning on resistance backup, Middleton sits firmly in cold-climate territory, so that's the class of unit priced here. Climate figures trace to the nearest NOAA station, DANE CO REGIONAL-TRUAX FIELD, 8.5 miles from Middleton.
What it actually costs to run, year to year
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. Middleton's gas rate of 10.74 per Mcf, applied to the 60 Mcf a year the furnace burns, puts its running cost near $832 a year, against 18.87¢ per kWh for electricity. 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 Middleton, compared
Gas isn't universal in Middleton — many houses run on electric heat already. Swap the comparison to resistance heat instead of gas, and Middleton's answer improves. 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 Middleton compares nationally
Middleton lands at position 287 out of 3206 cities on heating severity (coldest is 1), and 1746 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.
Deciding what's next in Middleton, WI
Middleton, Wisconsin is home to about 22,566 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 Middleton, nothing is lost by holding off until the current equipment genuinely fails.
Get quotes from local HVAC contractors before deciding.
Reading further on this page's numbers
Every constant behind this page — the 2.48 seasonal COP, the degree-day corrections, the equipment costs — is documented in the methodology guide. Middleton's -9°F design temperature falls on the cold side of the 25°F cutoff the cold-climate unit guide walks through.