The Hidden Danger of Generator Use

Every year, people are seriously injured or killed by carbon monoxide (CO) poisoning from generators operated too close to living spaces. CO is colorless, odorless, and acts quickly — victims often don't realize there's a problem until it's too late. Understanding generator safety isn't just good practice; it's potentially life-saving.

Carbon Monoxide: The #1 Generator Hazard

A generator's engine produces carbon monoxide as a byproduct of combustion. This gas is toxic at relatively low concentrations and can build up rapidly in enclosed or semi-enclosed spaces, including garages (even with the door open), basements, and screened porches.

Non-Negotiable CO Safety Rules

  • Always operate generators outdoors — at least 20 feet from any window, door, or vent.
  • Never run a generator in a garage, even with the door open. CO can still migrate inside.
  • Point the exhaust away from the house — wind can redirect fumes back toward openings.
  • Install CO detectors on every level of your home and near sleeping areas. Test them regularly.
  • If you feel dizzy, nauseated, or have a sudden headache while a generator is running — get outside immediately and call emergency services.

Safe Fuel Handling

Gasoline and propane are flammable and require careful handling to prevent fire and explosion.

  • Never refuel a hot generator. Turn it off and let it cool for at least 5 minutes before adding fuel. Spilled gasoline on a hot engine can ignite instantly.
  • Store gasoline in approved, sealed containers — never in glass or non-approved plastic.
  • Keep stored fuel away from heat sources, open flames, and direct sunlight.
  • Use fuel stabilizer in stored gasoline if the generator won't be used for more than 30 days. Unstabilized gas degrades and can clog carburetors.

Electrical Safety Essentials

  • Never back-feed power into your home's wiring by plugging the generator into a wall outlet (this is called "backfeeding" and can electrocute utility workers). Always use a properly installed transfer switch or interlock kit.
  • Use heavy-duty, outdoor-rated extension cords. Undersized cords overheat and can cause fires.
  • Don't overload the generator — stay within 80% of its rated capacity for safe, sustained operation.
  • Keep the generator dry. Never operate it in rain without a proper generator tent or canopy.

Seasonal Maintenance Checklist

A generator that hasn't been used in months may fail exactly when you need it most. Regular maintenance prevents this.

Before Storm Season (Annual Prep)

  1. Change the oil (every 50–100 hours of use, or annually — check your manual).
  2. Inspect and replace the air filter if dirty.
  3. Check and clean the spark plug; replace if worn or fouled.
  4. Run the generator under load for 30 minutes to verify operation and burn off any stale fuel.
  5. Inspect all fuel lines and connections for cracks or leaks.
  6. Test the battery (for electric-start models) and replace if it won't hold a charge.

Long-Term Storage (Off-Season)

  • Add fuel stabilizer to the tank and run the engine for 5–10 minutes to circulate it.
  • Alternatively, run the engine until the carburetor runs dry to prevent varnish buildup.
  • Store in a dry, ventilated area — not airtight. Condensation is the enemy of metal engine parts.
  • Cover with a breathable cover (not plastic tarp) to keep dust out while allowing airflow.

A Safe Generator Is a Reliable Generator

Generators are valuable tools, but they demand respect. Following these safety guidelines protects your family from CO poisoning, fire, and electrical hazards — and proper maintenance ensures your generator will actually start and run when a real emergency hits. A few hours of preparation and attention to safety can make all the difference.