Heat Pump Payback in Milwaukee, WI
Milwaukee, WI: the heat pump payback math
Here in Milwaukee, the honest answer is that a heat pump raises your annual running cost. $5,500 is what Milwaukee would pay extra to go electric rather than replace the furnace and AC with the same again. Unfortunately the electric bill outweighs the gas bill it replaces by about $293 a year here, so the extra spend stays unrecovered. That's Milwaukee's own climate and rates talking, not a hedge or a caveat.
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Milwaukee is one of 3206 cities covered here, each run through the same model. Search another below.
Milwaukee's weather, in the numbers that matter
Milwaukee has a cold winter that leans hard on heating equipment, 5284 heating degree days a year against a 65°F base, and summers add a moderate cooling load, at 652 cooling degree days. -0.4°F is the figure equipment gets sized against here, the 99th-percentile cold snap, not an average day, with a low of -7.1°F in the 2024 station record. Worked through the model, that's a seasonal COP of 2.69 on the cold-climate unit fit for this climate. A cold-climate unit is the right call in Milwaukee, below 25°F design temperature, a standard heat pump leans hard on electric-resistance backup, which erases most of the savings. Source: NOAA station Milwaukee, 4.5 miles from Milwaukee, the closest one on record.
The yearly running costs in Milwaukee
Electricity use for heating alone comes out to about 4,974 kWh a year on the 2000-square-foot reference house; folding in cooling puts the electric bill near $1,043 a year. That compares with roughly 55 Mcf a year of gas at Milwaukee's $10.74 per-Mcf rate, about $750 a year with the old AC included, against a local electricity rate of 18.87¢/kWh. Because the heat pump costs more to run here, the gap only widens with time: $9,895 behind after 15 years compared with replacing the furnace and AC like-for-like.
How sensitive Milwaukee's result is to prices
For the verdict in Milwaukee to flip, electricity would need to drop to about 12.6¢/kWh from 18.87¢, or gas climb past $16.06 per Mcf from $10.74. A utility offering a lower heat pump rate can change this. Until then, no quote price makes a heat pump pay back against gas in Milwaukee; the case for one here rests on comfort, cooling, or replacing electric heat instead.
If your home heats with electric baseboard instead of gas
Not every home in Milwaukee has gas service. Against electric-resistance heat, baseboard or an electric furnace, both 100% efficient but still just resistance, the case for switching gets stronger here. The saving here runs about $1,641 a year, which recovers the extra $10,000 spent going electric in roughly 6.1 years.
How Milwaukee compares nationally
Milwaukee lands at position 505 out of 3206 cities on heating severity (coldest is 1), and 31 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 Milwaukee, WI
Milwaukee, Wisconsin is home to about 563,531 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 Milwaukee, nothing is lost by holding off until the current equipment genuinely fails.
Line up a few local HVAC quotes before you decide.
Where Milwaukee's figure comes from
Every constant behind this page, the 2.69 seasonal COP, the degree-day corrections, the equipment costs, is documented in the methodology guide. Milwaukee's -0.4°F design temperature falls on the cold side of the 25°F cutoff the cold-climate unit guide walks through.