Carbon Monoxide and Exhaust Safety for a Standby Generator
Last verified: September 2026
The one safety chapter I most want you to read: how a standby generator's exhaust becomes dangerous, why professional placement already protects you, and the simple habits that keep it that way. Rather talk it through? My number is (330) 200-8042.
Carbon Monoxide Safety, at a Glance
A standby generator runs on an engine, and engine exhaust contains carbon monoxide — invisible, odorless, and dangerous. The good news is that your installer already handled the hardest part by placing the unit outdoors, away from windows, doors, and vents. This guide covers your part: keeping it open and clear, keeping alarms inside, and knowing exactly what to do if you ever suspect a problem. There's a printable 29-page version up top.
Common Questions
1 Is carbon monoxide still a risk with a standby generator?
Yes. Every engine makes carbon monoxide, whatever the fuel. The big advantage of a standby is that it's permanently placed outdoors by pros, away from windows, doors, and vents — but exhaust can still drift, so keeping it clear and keeping CO alarms inside still matter.
2 What's my job, if the pros placed it correctly?
Keep it that way. Never enclose it, build over it, or let snow, leaves, or clutter block it or its exhaust. Keep battery-backup CO alarms on every level and outside every bedroom, and test them.
3 Why is snow on the unit dangerous?
The unit breathes in air and pushes out exhaust through openings in its housing. If deep snow or ice covers them, it can end up breathing its own exhaust, and a buried unit can push carbon monoxide back toward the house. Clear it off after every storm.
4 Where should carbon monoxide alarms go?
On every level of the home and outside each sleeping area, close enough to wake you. Choose battery-backup alarms so they work no matter what, and test them monthly.
5 What are the symptoms, and what do I do?
Headache, dizziness, weakness, nausea, confusion, and sleepiness. Get everyone into fresh air outside immediately, call 911, and don't go back in until responders say it's safe.
6 What if I smell gas near the unit?
That's a different emergency. Leave right away without touching any switch or flame, then call your gas company or 911 from somewhere safe. A fuel leak is licensed work — never a do-it-yourself fix.
Would You Rather I Just Help?
Getting the safe setup right — alarms tested, the unit clear, and a plan everyone in the house understands — is exactly what I help with, and it's the visit I take most seriously. I'll check that your unit is open and unobstructed, help you place and test CO alarms, and set up monitoring alerts. $99 flat for a visit, 30-day come-back-free.
Would you rather I just do this for you?
No shame in it — plenty of folks would rather hand it off, and that's what I'm here for. I'll come to your home, set it up right, and make sure it's working before I leave. Flat $99 per visit — no jargon, no upsell, and every visit is 30-day come-back-free.
Not a hardware job? I can often fix it remotely for $49 — a secure screen-share, up to 2 hours, that you watch the whole time and can end whenever (included free for $39/mo Support Plan members, and it counts toward the $99 if it turns out I need to come out).