Bismarck, ND: the heat pump payback math

In Bismarck, 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 $195 more a year to run than the furnace it replaces — a premium with no payback. That's Bismarck's own climate and rates talking, not a hedge or a caveat.

Bismarck's weather, in the numbers that matter

7508 heating degree days pile up here every year, so Bismarck has one of the harshest winters in the country; the cooling side runs to 574 cooling degree days, where summers add a moderate cooling load. Sizing runs off the design temperature, not the average day: -15°F here (record low -27°F), which works out to a seasonal COP of 2.34 for the cold-climate class of unit this climate calls for. Bismarck 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 BISMARCK MUNICIPAL AIRPORT, the closest NOAA station, 2.2 miles out.

The month-to-month numbers for Bismarck

Electricity use for heating alone comes out to about 8,124 kWh a year on the 2000-square-foot reference house; folding in cooling puts the electric bill near $1,027 a year. The gas furnace it replaces burns roughly 78 Mcf a year at 9.50 per Mcf here, for a running cost near $832 a year (electricity here runs 11.92¢/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 $6,429 behind.

Electric resistance heat in Bismarck, compared

Plenty of homes in Bismarck heat with electricity alone, no gas line involved. Swap the comparison to resistance heat instead of gas, and Bismarck's answer improves. About $1,328 a year comes back this way, enough that the 6-year payback clears the $8,000 premium comfortably within the equipment's life.

Where Bismarck ranks in this dataset

Ranked against the other 3206 cities covered, Bismarck comes in at 30 for heating severity — 1 would be the coldest place in the dataset — and 486 by population, where 1 is largest. That's the coldest third of the dataset, where climate does most of the work behind this figure.

Deciding what's next in Bismarck, ND

Bismarck, North Dakota is home to about 77,772 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 Bismarck, nothing is lost by holding off until the current equipment genuinely fails.

Line up a few local HVAC quotes before you decide.

More on how this number was built

Every constant behind this page — the 2.34 seasonal COP, the degree-day corrections, the equipment costs — is documented in the methodology guide. Bismarck's -15°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.