Heat Pump Payback in Shiloh, IL
Heat pump vs. gas furnace in Shiloh, IL
Here in Shiloh, the honest answer is that a heat pump raises your annual running cost. Against a like-for-like gas furnace and AC swap, going electric costs $5,500 more up front here. Running costs here land $74 a year higher than the furnace it replaces, so that premium is never recovered. That's Shiloh's own climate and rates talking, not a hedge or a caveat.
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Shiloh's weather, in the numbers that matter
3677 heating degree days pile up here every year, so Shiloh has a real but manageable winter; the cooling side runs to 1640 cooling degree days, where summers are hot enough that cooling matters as much as heating. Sizing runs off the design temperature, not the average day: 2.5°F here (coldest 2024 reading -3.8°F), which works out to a seasonal COP of 2.76 for the cold-climate class of unit this climate calls for. A cold-climate unit is the right call in Shiloh, 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, Scott Air Force Base/Midameri, 3.5 miles from Shiloh.
What it actually costs to run, year to year
A 2000-square-foot house here would pull roughly 3,373 heating kilowatt-hours annually on top of cooling, totalling about $909 a year on electricity. The gas furnace it replaces burns roughly 38 Mcf a year at $11.25 per Mcf here, for a running cost near $836 a year including the old AC (electricity here runs 19.06¢/kWh). Because the heat pump costs more to run here, the gap only widens with time: $6,604 behind after 15 years compared with replacing the furnace and AC like-for-like.
How sensitive Shiloh's result is to prices
For the verdict in Shiloh to flip, electricity would need to drop to about 16.3¢/kWh from 19.06¢, or gas climb past $13.17 per Mcf from $11.25. 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 Shiloh; the case for one here rests on comfort, cooling, or replacing electric heat instead.
Electric resistance heat in Shiloh, compared
Plenty of homes in Shiloh 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. About $1,270 a year comes back this way, enough that the 7.9-year payback clears the $10,000 premium comfortably within the equipment's life.
Shiloh against the rest of the country
Ranked against the other 3206 cities covered, Shiloh comes in at 1698 for heating severity, 1 would be the coldest place in the dataset, and 2418 by population, where 1 is largest. That's the middle third for winter severity among the cities covered here.
What to do with this number in Shiloh
Shiloh, Illinois is home to about 14,754 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 Shiloh, nothing is lost by holding off until the current equipment genuinely fails.
Ask a local HVAC contractor for a quote before committing either way.
More on how this number was built
Nothing above is a black box: the methodology guide shows the full arithmetic behind Shiloh's 2.76 seasonal COP and payback figure. Shiloh's 2.5°F design temperature falls on the cold side of the 25°F cutoff the cold-climate unit guide walks through.