In addition to methane emissions, co-emitted health-damaging air pollutants such as nitrogen oxides (NO x) are released into home air and can trigger respiratory diseases. homes have a climate impact comparable to the annual carbon dioxide emissions of 500 000 cars. Using a 20-year timeframe for methane, annual methane emissions from all gas stoves in U.S. More than three-quarters of methane emissions we measured originated during steady-state-off. stove emissions are 28.1 Gg CH 4 year –1. We estimated that natural gas stoves emit 0.8–1.3% of the gas they use as unburned methane and that total U.S. We quantified methane released in 53 homes during all phases of stove use: steady-state-off (appliance not in use), steady-state-on (during combustion), and transitory periods of ignition and extinguishment. residences release methane (CH 4)─a potent greenhouse gas─through post-meter leaks and incomplete combustion.
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