Heat Pump Payback in Round Lake, IL
Is a heat pump worth it in Round Lake?
Here in Round Lake, the honest answer is that a heat pump raises your annual running cost. Swap a failed furnace and AC for a heat pump rather than buying like-for-like, and the extra cost here runs $5,500. Unfortunately the electric bill outweighs the gas bill it replaces by about $269 a year here, so the extra spend stays unrecovered. There's no spin on that: Round Lake's numbers say wait.
Compare against another city
Landed on Round Lake by mistake, or want to compare it against somewhere else? Search the other 3206 cities below.
Why Round Lake's climate drives this number
Degree days tell the story here: Round Lake racks up 5324 heating degree days each year (base 65°F), and summers add a moderate cooling load, with 777 cooling degree days on the cooling side. Sizing runs off the design temperature, not the average day: -0.9°F here (coldest 2024 reading -11°F), which works out to a seasonal COP of 2.68 for the cold-climate class of unit this climate calls for. Round Lake 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 Waukegan Regional Airport, 13 miles from Round Lake, the closest one on record.
The yearly running costs in Round Lake
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). With running costs higher every year, there is no payback at any purchase price; over 15 years, against a like-for-like replacement, a household here would end $9,540 behind.
What would change Round Lake's answer
The heat pump would become the cheaper option in Round Lake if electricity fell to 13.3¢/kWh (from 19.06¢) or gas rose above $16.11 per Mcf (from $11.25). At today's prices a cheaper quote cannot rescue the gas comparison in Round Lake, since there is no yearly saving to recover it from.
If your home heats with electric baseboard instead of gas
Gas isn't universal in Round Lake, 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. About $1,676 a year comes back this way, enough that the 6-year payback clears the $10,000 premium comfortably within the equipment's life.
Round Lake against the rest of the country
Among 3206 cities, Round Lake's winter puts it at rank 469 for severity, while its size puts it at rank 2038 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.
Deciding what's next in Round Lake, IL
About 18,654 people live in Round Lake, Illinois, 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.
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 Round Lake's 2.68 seasonal COP and payback figure. Round Lake's -0.9°F design temperature is below the 25°F line, which is why a cold-climate unit is the right call here, see what that changes in the cold-climate unit guide.