Households are being warned about the risks of using their gas hob, especially with windows closed during the recent cooler spell of weather. While summer might mean less hob use, it remains a key kitchen appliance. For many who cook with gas, failing to properly ventilate the kitchen could lead to various health problems this June.
Health Risks from Gas Cooking
According to Clean Air Hub UK, cooking with gas releases air pollutants that harm human health and the environment. Gas cookers are a major source of indoor air pollution, particularly nitrogen dioxide (NO2). Gas use in a typical kitchen can produce NO2 levels exceeding World Health Organisation guidelines, UK Health and Safety Executive limits, and legal UK outdoor air pollution standards.
Gas cooking is linked to asthma in children and adults, reduced pulmonary function, respiratory illness, dementia, and cognitive decline. Gas hobs can also produce carbon monoxide, carbon dioxide, and nitrogen dioxide, which linger in the home. When not in use, gas appliances may leak methane (a potent greenhouse gas) and benzene (a known human carcinogen).
Exposure to NO2 causes lung inflammation, reduced lung function, and increased asthma attacks, especially in children. Evidence suggests that pollutants from gas cooking negatively impact the brain, respiratory, and nervous systems in adults. The impact of gas cooking on childhood asthma is comparable to second-hand smoke. Exposure during the first three months of life has been linked to impaired memory and verbal development, and a higher risk of ADHD symptoms in toddlers.
How to Reduce Risks
For those cooking with gas, there are ways to make it safer. Properly ventilate the kitchen when cooking, preferably with a functioning range hood vented outside, mechanical ventilation, or by opening windows. Consider switching to an electric appliance when possible. Service gas appliances annually. Install and maintain carbon monoxide detectors in kitchens and nearby rooms, using devices that detect low levels.
Use as much ventilation as possible during and at least 10 minutes after using the gas appliance. Open windows to create a through-draught to disperse pollution. If the gas appliance includes a fan, ensure it is clean, well-maintained, and has an outdoor vent. Minimize exposure by using plug-in appliances like electric kettles, microwaves, rice cookers, or air fryers.
