Quote:
Originally Posted by chowhou
I do not see how gas stoves will be a societal problem beyond "they might make the air quality a bit worse."
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There's no 'might' about the air quality effect of using gas stoves. They pollute in three different ways. Burning the gas creates CO2, which is already at an atmospheric concentration that is causing global heating. In locations where there's a less carbon intensive potential for cooking, like in BC, that's a societal benefit.
Recent US research shows that gas stoves leak a small amount of methane continuously into the atmosphere. Individual homes are safe (unless the stove is damaged), but collectively all the US stoves in existence leak the equivalent of half a million vehicles operating every year. Methane is a more intensive contributor to climate change than CO2, although it's shorter lived in the atmosphere.
Burning gas also releases nitrous oxide. When conducting the tests, researchers found high levels of nitrogen oxides, greater than 100 parts per billion. The Canadian standard for 'safe' exposure is 13 ppb over a 24 hour period. If the kitchen is well ventilated, and the range hood is always used when the stove is in use, the concentration shouldn't reach dangerous levels, but people don't know that, or forget. NO2 is particularly dangerous to individuals, especially children, who have asthma or other breathing problems. These days buildings are more effectively sealed up, for energy efficiency, and that increases the likelihood of higher and more lingering concentrations
The lead researcher at Stanford University had a gas stove, that he operated without turning on ventilation. After the study he always ventilated his kitchen whenever he used the stove. Then he replaced it with an electric stove.