Installation Cost

A high-efficiency gas furnace installed in Chicago typically costs $4,000–$8,000 depending on efficiency rating and home size. A cold-climate heat pump system (outdoor unit + air handler) typically costs $8,000–$18,000 installed. The heat pump premium is real — but federal tax credits can offset $2,000 or more.

Operating Costs in Chicago

Chicago winters are cold. At current natural gas and electricity rates, a gas furnace typically costs less to operate per heating season than an air-source heat pump in Chicago — especially during the coldest weeks when heat pump efficiency drops.

However, a heat pump also provides cooling in summer, replacing a separate AC system. When you factor in the combined heating and cooling cost, the gap narrows significantly.

The Dual-Fuel Advantage

Many Chicago homeowners choose a dual-fuel system: a heat pump handles heating down to about 35°F, then a gas furnace takes over for the coldest days. This captures the heat pump's efficiency advantage during mild weather while keeping gas backup for extreme cold.

15-Year Total Cost of Ownership

When you account for installation, operating costs, maintenance, and the fact that a heat pump replaces both a furnace and AC, the 15-year total cost is often comparable between the two options — with the heat pump sometimes coming out ahead if gas prices rise.

The Bottom Line

For most Chicago homeowners replacing both heating and cooling equipment, a dual-fuel system or a high-efficiency cold-climate heat pump is worth serious consideration. For homeowners replacing only a furnace with a working AC, a high-efficiency gas furnace is usually the more straightforward choice.