Heat pump vs. gas furnace in Mandan, ND
Mandan is a place where a heat pump genuinely costs more to operate than the alternative. 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). Unfortunately the electric bill outweighs the gas bill it replaces by about $214 a year here, so the extra spend stays unrecovered. There's no spin on that: Mandan's numbers say wait.
The climate behind Mandan's payback figure
Degree days tell the story here: Mandan racks up 7854 heating degree days each year (base 65°F), and summers add a moderate cooling load, with 423 cooling degree days on the cooling side. Sizing runs off the design temperature, not the average day: -14.8°F here (record low -31°F), which works out to a seasonal COP of 2.34 for the cold-climate class of unit this climate calls for. Below the 25°F line where a standard machine starts leaning on resistance backup, Mandan sits firmly in cold-climate territory, so that's the class of unit priced here. Climate figures trace to the nearest NOAA station, MANDAN MUNICIPAL AIRPORT, 4.3 miles from Mandan.
Mandan's running-cost comparison, in dollars
Modelled on a typical 2000-square-foot house, the heat pump draws about 8,499 kWh a year to keep it warm, plus cooling, for a combined electric bill near $1,056 a year. Mandan's gas rate of 9.50 per Mcf, applied to the 82 Mcf a year the furnace burns, puts its running cost near $842 a year, against 11.92¢ per kWh for electricity. 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 $6,705 behind.
The other scenario: no gas furnace to begin with
Plenty of homes in Mandan 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. Switching saves about $1,380 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 5.8 years.
Mandan against the rest of the country
Among 3206 cities, Mandan's winter puts it at rank 13 for severity, while its size puts it at rank 1621 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 Mandan, ND
About 24,788 people live in Mandan, North Dakota, and every number on this page is what a contractor would actually work from when quoting a system here — the point isn't to replace that quote, it's to tell you whether to bother asking for one. Here, there's no cost penalty to waiting until your current furnace or AC actually needs replacing.
Line up a few local HVAC quotes before you decide.
More on how this number was built
The methodology guide walks through exactly how Mandan's 2.34 seasonal COP and the rest of this page's numbers get built. At a -14.8°F design temperature, Mandan sits in cold-climate territory; the guide to that class of unit explains why.