| > All that goes up the hood and outside. In theory. In theory, theory and practice are the same; in practice, theory and practice are (often) different. LBNL found that range hoods sometimes captured only 55% of pollutants like NO2: * https://pubmed.ncbi.nlm.nih.gov/22044446/ Another study found it 30%: * https://pubs.acs.org/doi/10.1021/es3001079 Even with range hoods, results can vary even for the same range, see (e.g.): > These studies found that for many range hoods, [capture efficiency] is much higher for the back than for the front cooktop burners. * https://www.sciencedirect.com/science/article/abs/pii/S03601... Design for the real world, not the spherical cow idealized one, for example when it comes to make-up air (so you're not depressurizing your home): * https://www.youtube.com/watch?v=hwSWOAkbhjA > Criticize the hood not the range if its not functioning properly. Browning meat or frying anything in oil is not exotic and is not good for you to breathe regardless of range type. Of course blaming ventilation is a standard go-to response: > “Ventilation is really where this discussion should be, rather than banning one particular type of technology,” said Jill Notini, a vice president with the Washington-based [Association of Home Appliance Manufacturers] trade group. “Banning one type of a cooking appliance is not going to address the concerns about overall indoor air quality. We may need some behavior change, we may need [people] to turn on their hoods when cooking.” * https://www.bnnbloomberg.ca/us-safety-agency-to-consider-ban... But that may not help: In 2014, a group of researchers in Baltimore ran a study with 78 homes with gas stoves to understand the most effective ways to reduce indoor air pollution. In one group of homes, they replaced gas stoves with electric stoves. In this group, NO2 pollution levels fell by 50%. (Kephart told me the remaining NO2 probably came from cars and other sources of pollution outside). In another group of homes, they gave homeowners an air purifier with a carbon filter and NO2 levels fell by 22%. In the last group, they installed range hoods. In this final group they found no significant difference in NO2 pollution. * https://pubmed.ncbi.nlm.nih.gov/24329966/ Many gas stoves leak pollution even when they are turned off (are you planning to run a vent 24/7?): * https://sustainability.stanford.edu/news/climate-and-health-... It's probably a lot easier to prevent pollution in the first place as compared to dealing with it after the fact. Yes: a good vent (that is actually used) is necessary. But the vent has to be so much better for combustible fuel than non-combustible, and so non-combustible allows for more tolerance of errors. |