Heat Pump Payback in Libertyville, IL
Is a heat pump worth it in Libertyville?
Here in Libertyville, 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. The heat pump would cost about $269 more a year to run than the furnace it replaces, a premium with no payback. That's Libertyville's own climate and rates talking, not a hedge or a caveat.
Compare against another city
This runs the same numbers for 3206 US cities, not just Libertyville. Look one up here.
Libertyville's weather, in the numbers that matter
5324 heating degree days pile up here every year, so Libertyville has a cold winter that leans hard on heating equipment; the cooling side runs to 777 cooling degree days, where summers add a moderate cooling load. The 99% winter design temperature here, the cold snap equipment must be sized for, not the seasonal average, is -0.9°F, and the coldest daily reading in the 2024 station record was -11°F. That puts the seasonal coefficient of performance at 2.68 for the recommended cold-climate unit. Libertyville 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. Climate figures trace to the nearest NOAA station, Waukegan Regional Airport, 10.5 miles from Libertyville.
The yearly running costs in Libertyville
Modelled on a typical 2000-square-foot house, the heat pump draws about 5,030 kWh a year to keep it warm, plus cooling, for a combined electric bill near $1,085 a year. The gas furnace it replaces burns roughly 55 Mcf a year at $11.25 per Mcf here, for a running cost near $816 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: $9,540 behind after 15 years compared with replacing the furnace and AC like-for-like.
How sensitive Libertyville's result is to prices
For the verdict in Libertyville to flip, electricity would need to drop to about 13.3¢/kWh from 19.06¢, or gas climb past $16.11 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 Libertyville; the case for one here rests on comfort, cooling, or replacing electric heat instead.
If your home heats with electric baseboard instead of gas
Gas isn't universal in Libertyville, many houses run on electric heat already. 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 $1,676 a year, which recovers the extra $10,000 spent going electric in roughly 6 years.
Where Libertyville ranks in this dataset
Ranked against the other 3206 cities covered, Libertyville comes in at 468 for heating severity, 1 would be the coldest place in the dataset, and 1875 by population, where 1 is largest. That's the coldest third of the dataset, where climate does most of the work behind this figure.
Deciding what's next in Libertyville, IL
Libertyville, Illinois is home to about 20,643 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 Libertyville, nothing is lost by holding off until the current equipment genuinely fails.
Ask a local HVAC contractor for a quote before committing either way.
Where Libertyville's figure comes from
Nothing above is a black box: the methodology guide shows the full arithmetic behind Libertyville's 2.68 seasonal COP and payback figure. Libertyville's -0.9°F design temperature falls on the cold side of the 25°F cutoff the cold-climate unit guide walks through.