Route generator exhaust to keep carbon monoxide clear of windows, doors, and air intakes
domain: cpsc.gov · 5 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗
Steps
Treat the NFPA 37 minimum separation from any operable window, door, or building air intake as a floor, not a target distance.
Reference CPSC's published research showing exhaust plumes can travel well beyond that minimum and recommend siting further away and pointing exhaust away from the home.
Identify and avoid all opening types, not just windows/doors: HVAC fresh-air intakes, soffit vents, crawl-space vents, and dryer vents can all draw in generator exhaust.
Coordinate placement with neighboring structures' openings, not just the owner's home, when the unit sits near a property line.
Recommend CO detectors in the home as an additional safety layer regardless of siting distance, consistent with CPSC guidance.
Known gotchas
CPSC has documented that meeting the bare NFPA 37 minimum opening clearance is insufficient to reliably prevent dangerous indoor CO buildup — don't treat the code minimum as a safety target.
Wind, wall configuration, and roof overhangs can deflect exhaust in unpredictable ways; site-specific airflow, not just a tape measure, should inform placement in tight side yards.
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