Hunt & Live

Q&A · Off-Grid

Do All Generators Emit the Same Amount of CO?

April 5, 2026

Quick Answer

GENERATORS EMIT VARYING AMOUNTS OF CO. SOME GENERATORS PRODUCE MORE CO THAN OTHERS, DEPENDING ON THEIR TYPE AND DESIGN. GASOLINE GENERATORS, FOR EXAMPLE, TEND TO PRODUCE MORE CO THAN DIESEL GENERATORS.

CO Emissions from Generator Types

Carbon monoxide (CO) emissions from generators vary greatly depending on the type of fuel used. Gasoline generators, which use a spark ignition system, tend to produce more CO than diesel generators, which use a compression ignition system. Diesel generators typically produce less CO due to the higher compression ratio, which helps to ignite the fuel more efficiently. A study by the United States Environmental Protection Agency (EPA) found that gasoline generators produced an average of 2.5 grams of CO per kilowatt-hour (kWh) of electricity generated, while diesel generators produced an average of 0.5 grams of CO per kWh.

Factors Affecting CO Emissions

Several factors can affect CO emissions from generators, including engine size, age, and maintenance. Older generators may produce more CO due to worn-out parts and decreased engine efficiency. Poor maintenance, such as clogged air filters or dirty spark plugs, can also increase CO emissions. In addition, generators that are not properly tuned or calibrated can produce more CO. It is essential to follow the manufacturer’s guidelines for maintenance and tuning to minimize CO emissions.

Best Practices for CO Safety

To ensure safe operation and minimize CO emissions, it is crucial to follow best practices when using generators. Always operate generators in well-ventilated areas, away from windows and doors. Keep generators at least 20 feet away from buildings and other structures to prevent CO buildup. Regularly inspect and maintain the generator, and replace the air filter every 50 hours of operation. Always use a CO detector when operating a generator indoors or in enclosed spaces. By following these best practices, you can minimize the risk of CO poisoning and ensure safe operation of your generator.

generator-carbon-monoxide-safety generators emit same amount
Share

Find more answers

Browse the full Q&A library by topic, or jump back to the topic this question belongs to.