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 $3,500 after a $2,000 federal tax credit. 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.

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, against a record low of -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 (electricity here runs 13.31¢/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 $5,005 behind.

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 $8,000 spent up front comes back in about 7 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.