Free Illinois Carbon Monoxide Detector Disclosure
Illinois requires carbon monoxide alarms under the Illinois Carbon Monoxide Alarm Detector Act (430 ILCS 135). Alarms must be installed within 15 feet of every sleeping area in dwellings with fuel-burning equipment, fireplaces, or attached garages.
Free Illinois Carbon Monoxide Detector Disclosure โ overview
A Illinois Carbon Monoxide Detector Disclosure documents key facts about the rental property at the time of lease signing. The Illinois Carbon Monoxide Alarm Detector Act (430 ILCS 135) requires CO alarms in all dwelling units with fuel-burning equipment. The form on this page documents CO alarm installation, locations, and test status.
Complete the Disclosure Form
Complete the form below to generate a comprehensive Illinois Carbon Monoxide Detector Disclosure. The form produces a multi-page PDF in legal-document format with all sections, signature lines, and tenant acknowledgment. Both parties should sign the printed copy.
1. Rental Property
2. Carbon Monoxide Detector Installation
3. Tenant Information
4. Landlord Information
5. Tenant Acknowledgment
About Illinois Carbon Monoxide Detector Disclosure
Illinois Carbon Monoxide Alarm Detector Act (430 ILCS 135) requires CO alarms in all dwelling units with fuel-burning equipment (furnaces, water heaters, boilers, stoves, dryers), attached garages, or fuel-burning fireplaces. Alarms must be installed within 15 feet of every sleeping area. Landlords are responsible for initial installation; tenants are responsible for monthly testing and battery replacement.
Illinois’s Carbon Monoxide Detector Disclosure Framework
- Statute: 430 ILCS 135 (Illinois Carbon Monoxide Alarm Detector Act)
- Required: dwellings with fuel-burning equipment, attached garages, or fireplaces
- Placement: within 15 feet of every sleeping area
- Landlord duty: install operational CO alarms before occupancy
- Tenant duty: monthly testing, battery replacement, prompt reporting of defects
What the Disclosure Covers
- Whether CO alarms are installed (or whether the unit is exempt)
- Locations of each CO alarm
- Type of detector (battery, hardwired, combination smoke/CO)
- Date of most recent test
Tenant Reporting Responsibilities
Illinois tenants must test CO alarms monthly and replace batteries when low-battery signals sound. Report non-functioning CO alarms to the landlord in writing immediately. If you experience CO symptoms (headache, dizziness, nausea), leave the dwelling, call 911, and contact your gas utility. The landlord must repair or replace defective CO alarms within a reasonable time.
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โ Legal Disclaimer
This form is provided for general informational purposes only and does not constitute legal advice. For current Illinois CO alarm rules, visit Illinois Department of Public Health and review 430 ILCS 135. Consult a qualified Illinois attorney for advice specific to your situation.

