Should Windsor switch to a heat pump?

In Windsor, a heat pump would cost more to run each year than what you have now. 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 Windsor's own climate and rates talking, not a hedge or a caveat.

How cold Windsor actually gets

Degree days tell the story here: Windsor 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. The 99% winter design temperature here — the cold snap equipment must be sized for, not the seasonal average — is -9°F, against a record low of -11°F. That puts the seasonal coefficient of performance at 2.48 for the recommended cold-climate unit. Below the 25°F line where a standard machine starts leaning on resistance backup, Windsor sits firmly in cold-climate territory, so that's the class of unit priced here. Source: NOAA station DANE CO REGIONAL-TRUAX FIELD, 7.9 miles from Windsor — the closest one on record.

The month-to-month numbers for Windsor

Electricity use for heating alone comes out to about 5,896 kWh a year on the 2000-square-foot reference house; folding in cooling puts the electric bill near $1,235 a year. 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). Priced as a standalone purchase rather than against a like-for-like replacement, equipment payback runs past the 15-year equipment life, for a 15-year net position $9,545 behind.

If your home heats with electric baseboard instead of gas

Not every home in Windsor has gas service. Compared with baseboard or electric-furnace resistance heat, the numbers shift in the heat pump’s favor. Switching saves about $1,710 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 4.7 years.

How Windsor compares nationally

Windsor lands at position 293 out of 3206 cities on heating severity (coldest is 1), and 3206 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 Windsor

Windsor, Wisconsin is home to about 10,005 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 Windsor, 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 Windsor's figure comes from

Every constant behind this page — the 2.48 seasonal COP, the degree-day corrections, the equipment costs — is documented in the methodology guide. Windsor'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.