Weston, WI: the heat pump payback math

In Weston, 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). The heat pump would cost about $475 more a year to run than the furnace it replaces — a premium with no payback. That's Weston's own climate and rates talking, not a hedge or a caveat.

Weston's weather, in the numbers that matter

Degree days tell the story here: Weston racks up 6615 heating degree days each year (base 65°F), and summers add a moderate cooling load, with 415 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 -7.1°F, against a record low of -9°F. That puts the seasonal coefficient of performance at 2.53 for the recommended cold-climate unit. Below the 25°F line where a standard machine starts leaning on resistance backup, Weston sits firmly in cold-climate territory, so that's the class of unit priced here. These numbers come from WAUSAU DOWNTOWN AIRPORT, the closest NOAA station, 4.6 miles out.

Weston's running-cost comparison, in dollars

Modelled on a typical 2000-square-foot house, the heat pump draws about 6,621 kWh a year to keep it warm, plus cooling, for a combined electric bill near $1,316 a year. The gas furnace it replaces burns roughly 69 Mcf a year at 10.74 per Mcf here, for a running cost near $841 a year (electricity here runs 18.87¢/kWh). Buy it outright, not incrementally, and payback stretches to beyond the 15-year equipment life; over 15 years the net position sits $10,620 behind.

Electric resistance heat in Weston, compared

Plenty of homes in Weston heat with electricity alone, no gas line involved. Swap the comparison to resistance heat instead of gas, and Weston's answer improves. Switching saves about $1,946 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 4.1 years.

Where Weston ranks in this dataset

Among 3206 cities, Weston's winter puts it at rank 78 for severity, while its size puts it at rank 2310 for population — 1 in both cases being the extreme. 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 Weston

Weston, Wisconsin is home to about 15,866 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 Weston, 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 2.53 seasonal COP, the degree-day corrections, the equipment costs — is documented in the methodology guide. Weston's -7.1°F design temperature falls on the cold side of the 25°F cutoff the cold-climate unit guide walks through.