Heat Pump Payback in Marion, IA
Heat pump vs. gas furnace in Marion, IA
Marion is a place where a heat pump genuinely costs more to operate than the alternative. Swap a failed furnace and AC for a heat pump rather than buying like-for-like, and the extra cost here runs $5,500. Unfortunately the electric bill outweighs the gas bill it replaces by about $100 a year here, so the extra spend stays unrecovered. That's Marion'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 Marion. Look one up here.
How cold Marion actually gets
Marion has a cold winter that leans hard on heating equipment, 5468 heating degree days a year against a 65°F base, and summers add a moderate cooling load, at 860 cooling degree days. The 99% winter design temperature here, the cold snap equipment must be sized for, not the seasonal average, is -11°F, and the coldest daily reading in the 2024 station record was -18.9°F. That puts the seasonal coefficient of performance at 2.44 for the recommended cold-climate unit. A cold-climate unit is the right call in Marion, below 25°F design temperature, a standard heat pump leans hard on electric-resistance backup, which erases most of the savings. Climate figures trace to the nearest NOAA station, The Eastern Iowa Airport, 13 miles from Marion.
What it actually costs to run, year to year
A 2000-square-foot house here would pull roughly 5,674 heating kilowatt-hours annually on top of cooling, totalling about $853 a year on electricity. The gas furnace it replaces burns roughly 57 Mcf a year at $10.61 per Mcf here, for a running cost near $753 a year including the old AC (electricity here runs 13.31¢/kWh). Because the heat pump costs more to run here, the gap only widens with time: $7,005 behind after 15 years compared with replacing the furnace and AC like-for-like.
What would change Marion's answer
For the verdict in Marion to flip, electricity would need to drop to about 11.4¢/kWh from 13.31¢, or gas climb past $12.37 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 Marion; the case for one here rests on comfort, cooling, or replacing electric heat instead.
Electric resistance heat in Marion, compared
Plenty of homes in Marion 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 $1,138 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 8.8 years.
Where Marion ranks in this dataset
Ranked against the other 3206 cities covered, Marion comes in at 395 for heating severity, 1 would be the coldest place in the dataset, and 972 by population, where 1 is largest. That's the coldest third of the dataset, where climate does most of the work behind this figure.
What to do with this number in Marion
Marion, Iowa is home to about 42,542 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 Marion, 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
The methodology guide walks through exactly how Marion's 2.44 seasonal COP and the rest of this page's numbers get built. Marion's -11°F design temperature falls on the cold side of the 25°F cutoff the cold-climate unit guide walks through.