Heat Pump Payback in Sioux City, IA
Should Sioux City switch to a heat pump?
Sioux City is a place where a heat pump genuinely costs more to operate than the alternative. $5,500 is what Sioux City would pay extra to go electric rather than replace the furnace and AC with the same again. Unfortunately the electric bill outweighs the gas bill it replaces by about $143 a year here, so the extra spend stays unrecovered. That's Sioux City's own climate and rates talking, not a hedge or a caveat.
Not the city you meant?
This runs the same numbers for 3206 US cities, not just Sioux City. Look one up here.
Sioux City's weather, in the numbers that matter
Degree days tell the story here: Sioux City racks up 5768 heating degree days each year (base 65°F), and summers add a moderate cooling load, with 858 cooling degree days on the cooling side. -15°F is the figure equipment gets sized against here, the 99th-percentile cold snap, not an average day, with a low of -20°F in the 2024 station record. Worked through the model, that's a seasonal COP of 2.34 on the cold-climate unit fit for this climate. Sioux City 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. Climate figures trace to the nearest NOAA station, Sioux Gateway/Col Bud Day Fie, 7.2 miles from Sioux City.
Sioux City's running-cost comparison, in dollars
A 2000-square-foot house here would pull roughly 6,242 heating kilowatt-hours annually on top of cooling, totalling about $928 a year on electricity. Sioux City's gas rate of $10.61 per Mcf, applied to the 60 Mcf a year the furnace burns, puts the current furnace-and-AC running cost near $785 a year, against 13.31¢ per kWh for electricity. Because the heat pump costs more to run here, the gap only widens with time: $7,641 behind after 15 years compared with replacing the furnace and AC like-for-like.
How sensitive Sioux City's result is to prices
For the verdict in Sioux City to flip, electricity would need to drop to about 10.9¢/kWh from 13.31¢, or gas climb past $12.99 per Mcf from $10.61. A utility offering a lower heat pump rate can change this. Until then, no quote price makes a heat pump pay back against gas in Sioux City; the case for one here rests on comfort, cooling, or replacing electric heat instead.
Electric resistance heat in Sioux City, compared
Plenty of homes in Sioux City heat with electricity alone, no gas line involved. Compared with baseboard or electric-furnace resistance heat, the numbers shift in the heat pump’s favor. Switching saves about $1,164 a year here, a heat pump moving heat rather than generating it needs far less electricity than resistance coils, so the extra $10,000 spent up front comes back in about 8.6 years.
Sioux City against the rest of the country
Ranked against the other 3206 cities covered, Sioux City comes in at 294 for heating severity, 1 would be the coldest place in the dataset, and 414 by population, where 1 is largest. That's the coldest third of the dataset, where climate does most of the work behind this figure.
Next step if you live in Sioux City
Sioux City, Iowa is home to about 86,875 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 Sioux City, nothing is lost by holding off until the current equipment genuinely fails.
Ask a local HVAC contractor for a quote before committing either way.
Reading further on this page's numbers
Nothing above is a black box: the methodology guide shows the full arithmetic behind Sioux City's 2.34 seasonal COP and payback figure. At a -15°F design temperature, Sioux City sits in cold-climate territory; the guide to that class of unit explains why.