Pierre, SD: the heat pump payback math
Here in Pierre, the honest answer is that a heat pump raises your annual running cost. 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 $244 a year HIGHER than the furnace it replaces, so that premium is never recovered. That's Pierre's own climate and rates talking, not a hedge or a caveat.
How cold Pierre actually gets
Pierre has a cold winter that leans hard on heating equipment — 6612 heating degree days a year against a 65°F base — and summers add a moderate cooling load, at 825 cooling degree days. Sizing runs off the design temperature, not the average day: -11.2°F here (record low -18.9°F), which works out to a seasonal COP of 2.43 for the cold-climate class of unit this climate calls for. Pierre needs the cold-climate class of unit: past a 25°F design temperature a standard heat pump falls back on resistance backup often enough to eat the savings. These numbers come from PIERRE REGIONAL AIRPORT, the closest NOAA station, 1.7 miles out.
What it actually costs to run, year to year
Electricity use for heating alone comes out to about 6,890 kWh a year on the 2000-square-foot reference house; folding in cooling puts the electric bill near $1,074 a year. That compares with roughly 69 Mcf a year of gas at Pierre's 9.86 per-Mcf rate — about $830 a year — against a local electricity rate of 14.15¢/kWh. 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 $7,163 behind.
If your home heats with electric baseboard instead of gas
Plenty of homes in Pierre heat with electricity alone, no gas line involved. Against electric-resistance heat — baseboard or an electric furnace, both 100% efficient but still just resistance — the case for switching gets stronger here. About $1,446 a year comes back this way, enough that the 5.5-year payback clears the $8,000 premium comfortably within the equipment's life.
Where Pierre ranks in this dataset
Among 3206 cities, Pierre's winter puts it at rank 79 for severity, while its size puts it at rank 2548 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.
Deciding what's next in Pierre, SD
Pierre, South Dakota is home to about 13,788 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 Pierre, nothing is lost by holding off until the current equipment genuinely fails.
Get quotes from local HVAC contractors before deciding.
Where Pierre's figure comes from
The methodology guide walks through exactly how Pierre's 2.43 seasonal COP and the rest of this page's numbers get built. At a -11.2°F design temperature, Pierre sits in cold-climate territory; the guide to that class of unit explains why.