HVAC Repair Chicago: Costs by Failure Type (2026 Guide)
HVAC repair costs in Chicago range from about $150 for a simple igniter or thermocouple fix to over $1,500 for a boiler heat exchanger or a furnace control board replacement. With boiler-heated two-flats, high-efficiency condensing furnaces, and central AC all common across the city, the right repair cost depends heavily on which system and failure type you actually have.
By Jason Green · HVAC · Published September 6, 2026 · Updated September 6, 2026 · 8 min read
furnace repairs by failure type
Igniter and flame sensor failures are the most common furnace repair in Chicago winters and typically cost $150 to $350, often fixable same-visit. Blower motor replacement runs $300 to $700, while a cracked heat exchanger, which is a safety issue on any furnace, usually points toward full replacement rather than repair given the age of most units that develop this problem.
On 90%+ AFUE condensing furnaces, PVC venting issues like blockages or improper slope can cause shutdowns and typically cost $150 to $400 to correct, and this is a repair where hiring someone unfamiliar with condensing furnace venting can create bigger problems.
boiler repairs by failure type
Steam and hot-water boiler repairs common in Chicago's older two-flats and greystones include pressure relief valve replacement ($150-$350), circulator pump repair ($250-$600), and radiator or zone valve issues ($200-$500). A full boiler control board or heat exchanger failure often runs $800 to $1,500 and is another point where replacement may be more cost-effective on an aging unit.
Because many Chicago boilers are original to homes built decades ago, parts availability can add time and cost to a repair, and a contractor experienced with vintage steam systems is worth seeking out specifically.
AC and ductless repairs by failure type
Central AC repairs follow the same range as furnace work, generally $200 to $900 depending on the component. Ductless mini-split repairs in un-ducted homes run similarly per zone but require a technician comfortable working on multi-zone refrigerant lines common in Albany Park and Beverly bungalow conversions.
Emergency no-heat and no-cool calls during extreme weather in Chicago often carry an after-hours premium on top of standard repair pricing, so ask about that upfront when calling for an urgent repair.
permits, licensing, and choosing a repair contractor
Routine component repairs do not require a permit in Chicago, but any work that swaps out full equipment, like a furnace or boiler unit itself, generally falls under the Department of Buildings Express Permit Program and must be pulled by a City of Chicago licensed contractor. Illinois has no statewide HVAC license, so city licensing is the only credential that matters here.
Before hiring, confirm the company's license status through the Contractor License Lookup tool on chicago.gov, and ask specifically whether the technician has experience with your system type, whether that is a condensing furnace, a steam boiler, or a ductless mini-split.
Typical cost ranges
| Igniter/flame sensor repair | $150 - $350 |
| Blower motor replacement | $300 - $700 |
| Boiler circulator pump repair | $250 - $600 |
| Boiler control board/heat exchanger repair | $800 - $1,500 |
| Condensing furnace venting repair | $150 - $400 |
| AC component repair | $200 - $900 |
Ranges are general estimates gathered from homeowner-reported quotes, not an offer or a quote for your project.
Common questions
What is the most common furnace repair in Chicago?
Igniter and flame sensor failures are the most common, typically costing $150 to $350 and often fixed in one visit during peak winter demand.
How much does boiler repair cost in Chicago?
Common boiler repairs in Chicago's steam and hot-water systems range from $150 for a relief valve to $1,500 for a control board or heat exchanger issue, depending on the failure.
Is emergency HVAC repair more expensive in Chicago?
Yes, most companies charge an after-hours or emergency premium for no-heat or no-cool calls during nights, weekends, or extreme weather, on top of standard repair costs.
Do I need a permit for a furnace repair in Chicago?
No, routine component repairs do not need a permit. Replacing the full furnace or boiler unit typically requires an Express Permit pulled by a licensed contractor.
How do I find a licensed HVAC repair company in Chicago?
Check the Department of Buildings Contractor License Lookup tool on chicago.gov to confirm the company holds an active city HVAC trade license.
Are boiler repairs different from furnace repairs?
Yes, boilers use circulator pumps, radiators, and pressure relief valves rather than blower motors and heat exchangers used in furnaces, so a technician needs specific boiler experience for those systems.
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