Permit Required
Do you need a permit to replace a furnace in Chicago, IL?
A mechanical (HVAC) permit is required to replace a furnace. The Express Permit Program covers replacing existing heating equipment serving the same function.
✓ Verified from official source
Source: Chicago Dept of Buildings — Express Permit Program: Mechanical (HVAC) Work — Verified 2026-06-26
Permit rules vary by property and change over time. This is an informational guide, not legal advice — always confirm with City of Chicago Department of Buildings before starting work.
How to get the permit in Chicago
Building department
Apply online
Phone
312-744-3449
Code in force
Chicago does not adopt the IRC; it enforces its own 2019 Chicago Construction Codes (Chicago Building Code, Title 14, based in part on the 2018 ICC family)
Need a permit pulled? Find a licensed HVAC contractor in Chicago
Licensed HVAC contractors near you can handle the permit and the work — compare pros on our directory.
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