Heat pump vs. gas furnace in Saginaw, MI
In Saginaw, a heat pump would cost more to run each year than what you have now. 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 $406 a year HIGHER than the furnace it replaces, so that premium is never recovered. That's Saginaw's own climate and rates talking, not a hedge or a caveat.
Saginaw's weather, in the numbers that matter
Saginaw has a cold winter that leans hard on heating equipment — 5603 heating degree days a year against a 65°F base — and summers add a moderate cooling load, at 630 cooling degree days. The 99% winter design temperature here — the cold snap equipment must be sized for, not the seasonal average — is -1.1°F, against a record low of -2.4°F. That puts the seasonal coefficient of performance at 2.67 for the recommended cold-climate unit. Saginaw 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. Source: NOAA station SAGNAW CO H.W. BROWNE ARPT, 4.5 miles from Saginaw — the closest one on record.
What it actually costs to run, year to year
Electricity use for heating alone comes out to about 5,314 kWh a year on the 2000-square-foot reference house; folding in cooling puts the electric bill near $1,212 a year. That compares with roughly 58 Mcf a year of gas at Saginaw's 10.92 per-Mcf rate — about $806 a year — against a local electricity rate of 20.72¢/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 $9,589 behind.
If your home heats with electric baseboard instead of gas
Plenty of homes in Saginaw heat with electricity alone, no gas line involved. 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 $1,897 a year, which recovers the extra $8,000 spent going electric in roughly 4.2 years.
Saginaw against the rest of the country
Among 3206 cities, Saginaw's winter puts it at rank 339 for severity, while its size puts it at rank 956 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.
Next step for 43,001 people in Saginaw
Saginaw, Michigan is home to about 43,001 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 Saginaw, nothing is lost by holding off until the current equipment genuinely fails.
Get quotes from local HVAC contractors before deciding.
More on how this number was built
The methodology guide walks through exactly how Saginaw's 2.67 seasonal COP and the rest of this page's numbers get built. Saginaw's -1.1°F design temperature falls on the cold side of the 25°F cutoff the cold-climate unit guide walks through.