Will a heat pump pay off in Des Moines, IA?

Here in Des Moines, 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 $70 a year HIGHER than the furnace it replaces, so that premium is never recovered. That's Des Moines's own climate and rates talking, not a hedge or a caveat.

Des Moines's weather, in the numbers that matter

Degree days tell the story here: Des Moines racks up 4972 heating degree days each year (base 65°F), and summers are hot enough that cooling matters as much as heating, with 1291 cooling degree days on the cooling side. -11.9°F is the figure equipment gets sized against here — the 99th-percentile cold snap, not an average day — with a record low of -17°F on file. Worked through the model, that's a seasonal COP of 2.41 on the cold-climate unit fit for this climate. Below the 25°F line where a standard machine starts leaning on resistance backup, Des Moines sits firmly in cold-climate territory, so that's the class of unit priced here. Climate figures trace to the nearest NOAA station, DES MOINES INTERNATIONAL AIRP, 3.5 miles from Des Moines.

The month-to-month numbers for Des Moines

Electricity use for heating alone comes out to about 5,224 kWh a year on the 2000-square-foot reference house; folding in cooling puts the electric bill near $842 a year. The gas furnace it replaces burns roughly 52 Mcf a year at 10.61 per Mcf here, for a running cost near $772 a year (electricity here runs 13.31¢/kWh). Buy it outright, not incrementally, and payback stretches to beyond the 15-year equipment life; over 15 years the net position sits $4,546 behind.

The other scenario: no gas furnace to begin with

Not every home in Des Moines 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 $1,057 a year, which recovers the extra $8,000 spent going electric in roughly 7.6 years.

How Des Moines compares nationally

Among 3206 cities, Des Moines's winter puts it at rank 741 for severity, while its size puts it at rank 113 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 Des Moines, IA

Des Moines, Iowa is home to about 213,096 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 Des Moines, nothing is lost by holding off until the current equipment genuinely fails.

Ask a local HVAC contractor for a quote before committing either way.

More on how this number was built

Every constant behind this page — the 2.41 seasonal COP, the degree-day corrections, the equipment costs — is documented in the methodology guide. At a -11.9°F design temperature, Des Moines sits in cold-climate territory; the guide to that class of unit explains why.