Is a heat pump worth it in Platteville?

Here in Platteville, the honest answer is that a heat pump raises your annual running cost. $3,500 is what Platteville would pay extra to go electric rather than replace the furnace and AC with the same again, once the $2,000 federal credit is applied. The heat pump would cost about $373 more a year to run than the furnace it replaces — a premium with no payback. That's Platteville's own climate and rates talking, not a hedge or a caveat.

How cold Platteville actually gets

5652 heating degree days pile up here every year, so Platteville has a cold winter that leans hard on heating equipment; the cooling side runs to 739 cooling degree days, where summers add a moderate cooling load. -7.1°F is the figure equipment gets sized against here — the 99th-percentile cold snap, not an average day — with a record low of -15.9°F on file. Worked through the model, that's a seasonal COP of 2.53 on the cold-climate unit fit for this climate. A cold-climate unit is the right call in Platteville — below 25°F design temperature, a standard heat pump leans hard on electric-resistance backup, which erases most of the savings. These numbers come from PLATTEVILLE MUNICIPAL AIRPORT, the closest NOAA station, 3.2 miles out.

The month-to-month numbers for Platteville

Electricity use for heating alone comes out to about 5,657 kWh a year on the 2000-square-foot reference house; folding in cooling puts the electric bill near $1,186 a year. The gas furnace it replaces burns roughly 59 Mcf a year at 10.74 per Mcf here, for a running cost near $813 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 $9,101 behind.

Electric resistance heat in Platteville, compared

Not every home in Platteville has gas service. Swap the comparison to resistance heat instead of gas, and Platteville's answer improves. The saving here runs about $1,695 a year, which recovers the extra $8,000 spent going electric in roughly 4.7 years.

Where Platteville ranks in this dataset

Platteville lands at position 328 out of 3206 cities on heating severity (coldest is 1), and 2834 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.

Next step for 11,833 people in Platteville

Platteville, Wisconsin is home to about 11,833 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 Platteville, 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 Platteville's figure comes from

Every constant behind this page — the 2.53 seasonal COP, the degree-day corrections, the equipment costs — is documented in the methodology guide. At a -7.1°F design temperature, Platteville sits in cold-climate territory; the guide to that class of unit explains why.