Generator fumes contain carbon monoxide (CO), a deadly gas that you can’t see or smell. With generator use becoming increasingly common during Chicago’s severe weather events—from winter storms to summer power outages—understanding these dangers is crucial. At Chicago Water & Fire, we’ve seen firsthand how improper generator use can lead to dangerous situations. Here’s what every Chicago homeowner needs to know about generator safety.
Understanding Carbon Monoxide Dangers of Running Generators
Carbon monoxide from generators can quickly reach lethal levels, especially in enclosed spaces. According to the Chicago Department of Public Health, portable generators are particularly dangerous in our urban environment, where homes are closer together and many properties have enclosed garages, basements, and small outdoor spaces. Incidents of CO poisoning typically spike during winter storms and severe weather events.
Key Point: Generator fumes are not just unpleasant—they’re deadly. Carbon monoxide can cause severe illness or death within minutes in enclosed spaces.
Signs of Carbon Monoxide Poisoning
Recognize these symptoms immediately:
- Headache
- Dizziness
- Weakness
- Nausea
- Chest pain
- Confusion
- Loss of consciousness
If anyone shows these symptoms, get to fresh air immediately and call 911. For Chicago residents in multi-unit buildings, alert your building management and neighbors, as CO can spread through shared walls and ventilation systems.
Fire Hazards and the Risk of House Fires
Generators, especially those powered by gasoline, generate significant heat and can spark fires if used improperly. In Chicago’s dense urban environment, this risk is particularly concerning due to:
- Close proximity of buildings
- Shared walls and connected structures
- Limited outdoor space for safe placement
- Enclosed garages and basement areas
Key Point: Running a generator improperly increases the chances of fire damage, particularly in Chicago’s older buildings with vintage electrical systems and wooden structures.
How Fire Damage from Improper Generator Use Can Escalate
In Chicago’s urban environment, fire can spread rapidly between connected buildings and through shared spaces. The damage often extends beyond the initial property, affecting:
- Adjacent units and buildings
- Shared attics and basement spaces
- Common hallways and ventilation systems
- Historic architectural features common in Chicago homes
Proper Generator Placement and Safe Operation
To avoid carbon monoxide poisoning and fire hazards in Chicago’s unique urban environment:
- Place generators outdoors in a well-ventilated area
- Keep at least 20 feet from doors, windows, and air intake vents
- Follow Chicago Fire Department guidelines for placement in urban settings
- Consider space limitations in city lots and shared spaces
- Ensure placement doesn’t violate local noise ordinances
- Account for neighboring buildings’ windows and air intakes
Key Point: Proper placement of your generator outdoors minimizes both carbon monoxide and fire risks while complying with Chicago’s municipal codes and respecting neighbors’ safety.
Never Run Generators Indoors
- Not in garages (even with the door open)
- Not in covered patios or porches
- Not near open windows or doors
- Not in gangways between buildings
- Not in basement stairwells
- Not under covered back porches common in Chicago two- and three-flats
- Not in enclosed back stairs
Special Considerations for Operating Generators in Chicago
Cold Weather Operation
Chicago’s extreme winters require extra precautions:
- Ensure the generator is protected from snow while maintaining ventilation
- Keep the unit elevated above snow accumulation
- Use cold-weather rated extension cords
- Monitor carbon monoxide detectors more frequently during winter operation
- Consider wind patterns between buildings that could affect exhaust dispersion
Summer Operation
During Chicago’s humid summers:
- Protect from rain while ensuring proper ventilation
- Monitor temperature in confined urban spaces
- Consider noise impact on neighboring properties
- Keep fuel stored safely away from heat sources
Urban Property Considerations
For Chicago’s unique housing stock:
- Consult with condo or HOA boards about generator policies
- Review city regulations for historic properties
- Consider space limitations in urban lots
- Plan for shared wall and ventilation concerns
Essential Safety Equipment
Every Chicago home using a generator should have:
- Working carbon monoxide detectors on every level (required by Chicago ordinance)
- Chicago Fire Department-approved fire extinguisher
- Weather-appropriate generator cover rated for extreme temperatures
- GFCI protection compliant with Chicago electrical code
- Properly rated extension cords for cold weather use
Prevention is Key
Generator safety in Chicago’s urban environment isn’t just about following rules—it’s about protecting your family and neighbors. Take time now to:
- Plan your generator placement
- Install CO detectors
- Create an emergency plan
- Maintain your equipment
- Coordinate with neighbors and building management
If you experience fire or water damage related to generator use, Chicago Water & Fire is here to help 24/7. Our experienced teams are ready to respond to any restoration needs during severe weather and beyond.
Emergency Contacts
Keep these numbers accessible:
- Emergency Services: 911
- Chicago Fire Department: 312-747-6000
- Chicago Poison Control Center: 312-942-5969
- Chicago Water & Fire: (800) 597-6911
Additional Resources
Learn more about generator safety from these trusted sources: