Is a heat pump worth it in Vernon Hills?

Here in Vernon Hills, 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 $3,500 after a $2,000 federal tax credit. Running costs here land $228 a year HIGHER than the furnace it replaces, so that premium is never recovered. That's Vernon Hills's own climate and rates talking, not a hedge or a caveat.

Vernon Hills's weather, in the numbers that matter

Vernon Hills has a real but manageable winter — 4991 heating degree days a year against a 65°F base — and summers are hot enough that cooling matters as much as heating, at 1020 cooling degree days. The 99% winter design temperature here — the cold snap equipment must be sized for, not the seasonal average — is -0.9°F, against a record low of -11°F. That puts the seasonal coefficient of performance at 2.68 for the recommended cold-climate unit. Vernon Hills 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. These numbers come from PALWAUKEE MUNICIPAL ARPT, the closest NOAA station, 8.3 miles out.

What it actually costs to run, year to year

Modelled on a typical 2000-square-foot house, the heat pump draws about 4,716 kWh a year to keep it warm, plus cooling, for a combined electric bill near $1,065 a year. The gas furnace it replaces burns roughly 52 Mcf a year at 11.25 per Mcf here, for a running cost near $837 a year (electricity here runs 19.06¢/kWh). Priced as a standalone purchase rather than against a like-for-like replacement, equipment payback runs past the 15-year equipment life, for a 15-year net position $6,917 behind.

Electric resistance heat in Vernon Hills, compared

Plenty of homes in Vernon Hills heat with electricity alone, no gas line involved. Compared with baseboard or electric-furnace resistance heat, the numbers shift in the heat pump’s favor. About $1,596 a year comes back this way, enough that the 5-year payback clears the $8,000 premium comfortably within the equipment's life.

Where Vernon Hills ranks in this dataset

Vernon Hills lands at position 722 out of 3206 cities on heating severity (coldest is 1), and 1476 out of 3206 by population size (biggest is 1). That's the coldest third of the dataset, where climate does most of the work behind this figure.

Deciding what's next in Vernon Hills, IL

Vernon Hills, Illinois is home to about 27,002 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 Vernon Hills, 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 Vernon Hills's 2.68 seasonal COP and the rest of this page's numbers get built. At a -0.9°F design temperature, Vernon Hills sits in cold-climate territory; the guide to that class of unit explains why.