Heat pump vs. gas furnace in Newton, IA
In Newton, a heat pump would cost more to run each year than what you have now. $3,500 is what Newton would pay extra to go electric rather than replace the furnace and AC with the same again, once the $2,000 federal credit is applied. Unfortunately the electric bill outweighs the gas bill it replaces by about $100 a year here, so the extra spend stays unrecovered. There's no spin on that: Newton's numbers say wait.
The climate behind Newton's payback figure
Newton has a cold winter that leans hard on heating equipment — 5368 heating degree days a year against a 65°F base — and summers add a moderate cooling load, at 873 cooling degree days. The 99% winter design temperature here — the cold snap equipment must be sized for, not the seasonal average — is -11.2°F, against a record low of -18.4°F. That puts the seasonal coefficient of performance at 2.43 for the recommended cold-climate unit. A cold-climate unit is the right call in Newton — below 25°F design temperature, a standard heat pump leans hard on electric-resistance backup, which erases most of the savings. Source: NOAA station NEWTON MUNICIPAL AIRPORT, 1.8 miles from Newton — the closest one on record.
The month-to-month numbers for Newton
Modelled on a typical 2000-square-foot house, the heat pump draws about 5,594 kWh a year to keep it warm, plus cooling, for a combined electric bill near $844 a year. That compares with roughly 56 Mcf a year of gas at Newton's 10.61 per-Mcf rate — about $744 a year — against a local electricity rate of 13.31¢/kWh. Looked at as a full purchase rather than an incremental one, payback here is longer than the 15-year equipment life, leaving the 15-year total $4,997 behind.
Electric resistance heat in Newton, compared
Not every home in Newton 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 $1,116 a year, which recovers the extra $8,000 spent going electric in roughly 7.2 years.
How Newton compares nationally
Ranked against the other 3206 cities covered, Newton comes in at 449 for heating severity — 1 would be the coldest place in the dataset — and 2323 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 Newton
About 15,709 people live in Newton, Iowa, 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.
Where Newton's figure comes from
Nothing above is a black box: the methodology guide shows the full arithmetic behind Newton's 2.43 seasonal COP and payback figure. Newton's -11.2°F design temperature falls on the cold side of the 25°F cutoff the cold-climate unit guide walks through.