The short answer
If a carbon monoxide alarm sounds or CO poisoning is suspected, get everyone to fresh air and call 911 from safety. Do not stay inside to investigate or wait for generator service. CO cannot be reliably detected by smell, and a running generator is not proof of safe conditions.
General guidance, not installation, repair, engineering or legal instructions. Confirm equipment-specific and current local requirements with the appropriate professional.
Make the response familiar in advance
Discuss the exit plan with everyone who uses the property, including guests and household staff. Identify how people who need assistance will get out and where you will meet. Do not return until emergency responders say it is safe. Keep this plan available without depending on internet access during an outage.
Keep portable-generator precautions clear
CPSC advises using portable generators outdoors, at least 20 feet from the home, with exhaust directed away. Never run one in a home or garage, even with doors open. If a portable unit is part of a fallback plan, review its instructions before an emergency rather than improvising a location when the standby system is unavailable.
Do not confuse portable guidance with standby design
A fixed standby installation needs assessment under its own equipment instructions and applicable requirements. Do not use a portable-generator distance as the complete siting rule, or add barriers around a standby unit without review. Follow CO-alarm manufacturer instructions and applicable placement requirements; ask a qualified professional if the property’s protection is unclear.
Put it into practice
Prepare before the next outage
- Know the household’s exit and meeting plan, including assistance needs.
- Maintain CO alarms according to their instructions.
- Keep portable equipment out of enclosed and unsafe locations.
- Use emergency services for suspected CO, not a maintenance request.
Can I wait for an app alert before leaving?
No. Generator status monitoring is not a substitute for a CO alarm or an emergency response. If an alarm sounds or poisoning is suspected, act immediately from a safe location and follow emergency responders’ instructions.
Sources & further reading
Primary references for this topic. These inform general guidance; they do not approve a particular installation, establish a warranty claim or define our service agreement.
- CDC · Carbon monoxide hazards and emergency response ↗
- U.S. Consumer Product Safety Commission · Carbon monoxide safety ↗
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