Chicago
Lincoln Park · Lakeview · Portage Park
Heating and cooling for Illinois extremes.
Heating and cooling replacement, planned for your Illinois home.
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Your advisor confirms service at your address.
Where we install in Illinois.
Naperville
White Eagle · Tall Grass · Cress Creek
Rockford
Edgewater · Churchill's Grove · Loves Park
Common questions in Illinois.
Can a heat pump really handle a sub-zero Northern Illinois winter?
Cold-climate inverter heat pumps can heat well below zero, but because Illinois has abundant natural gas (via Nicor Gas and Peoples Gas) and severe polar vortex nights, many homeowners choose a dual-fuel system. The heat pump heats efficiently down to 25°F–35°F, and a high-efficiency gas furnace takes over when temperatures plunge.
Should I replace my furnace and central AC together in Illinois?
Yes, if both are over 12–15 years old. Your air conditioner relies on the furnace's indoor blower motor to push cool air through your home all summer. Replacing both together gives you a variable-speed ECM blower, a properly matched evaporator coil, and eligibility for joint ComEd and gas utility rebates.
Do Illinois cities require permits for furnace and AC replacements?
Yes. The City of Chicago and suburban municipalities across Cook, DuPage, Will, Kane, Lake, and Winnebago counties have specific mechanical permit and venting requirements. Our licensed local crews handle permitting and code compliance.
Illinois climate and homes.
Illinois climate and homes.
Your local climate
Chicago, Naperville, and Rockford all sit in IECC Climate Zone 5A (Cool-Humid). Heating dominates the annual energy budget with 6,000+ heating degree days and regular sub-zero cold snaps between December and February. Yet summers are far from mild: moisture from Lake Michigan and surrounding Midwest farmland drives oppressive July and August dew points that require strong latent dehumidification.
Northern Illinois swings from subzero wind chills in winter to humid 95°F days in July. Heating dominates the year, but summer dew points still call for strong dehumidification.
96%+ AFUE condensing furnaces vs. cold-climate dual-fuel
With Illinois winters lasting five to six months, upgrading an older 80% furnace to a 96%–98% AFUE two-stage variable-speed gas furnace—or pairing a cold-climate heat pump with a gas furnace—can lower winter heating bills.
Urban masonry bungalows, two-flats, and radiator homes
Chicago neighborhoods feature brick bungalows with low basements, SpacePak/Unico high-velocity systems, or boiler-heated homes lacking ducts (ideal for cold-climate ductless mini-splits), while collar-county suburbs run large basement split systems.
ComEd, Nicor Gas, and Peoples Gas efficiency rebates
Illinois utilities offer some of the strongest residential rebates in the Midwest for high-AFUE gas furnaces, high-SEER2 air conditioners, cold-climate heat pumps, and smart thermostats.
Plan your HVAC replacement in Illinois.
Your advisor confirms the system, scope, and price.
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