Commercial kitchen staff exposed to high levels of air pollution, study finds — SkimNews
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- PSE Healthy Energy researchers measured air quality in 27 US commercial kitchens, finding nitrogen dioxide exceeded WHO indoor air guidelines in 17 — every one of which cooked with fossil gas or propane.
- Dr. Drew Michanowicz noted commercial cooking appliances were excluded from US efficiency regulations that phased out residential pilot lights, leaving "upwards of 20-30 small flames" constantly burning in full-service kitchens.
- In two-thirds of gas kitchens, overnight and early-morning pollution levels were higher than during cooking hours because pilot lights burn 24/7 regardless of whether ventilation is running.
- Median pollution concentrations in dining areas surpassed WHO outdoor air guidelines, exposing diners, cleaners, and other building occupants — not just kitchen staff.
- Three all-electric kitchens in the study — a full-service restaurant, a school cafeteria, and a conference centre kitchen — recorded the lowest air pollution and the lowest workplace temperatures.
- Chef Christopher Galarza, who worked with the researchers, said kitchen heat leaves workers "drenched in sweat, dehydrated and physically spent," a strain spotlighted by this summer's UK heatwave that forced some restaurants to cut hours or close.
Why it matters: For the roughly 16 million US and 3.6 million UK catering workers, this study reframes gas cooking from a consumer choice to an occupational health issue: kitchens legally compliant with US workplace air pollution rules still exposed staff to NO2 above WHO indoor limits, and 24/7 pilot lights extended that exposure into dining rooms and overnight hours. The side-by-side comparison with three all-electric kitchens — lower in both pollution and temperature — gives commercial electrification a concrete, measured data point rather than a theoretical one.
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