In 2021, New York City adopted Local Law 154, which sets an air emissions limit for indoor combustion of fuels within new buildings. Under the law, the burning of “any substance that emits 25 kilograms or more of carbon dioxide per million British thermal units of energy” is prohibited. That standard effectively bans gas-burning stoves, furnaces, and water heaters, and any other fossil-fuel powered appliances. Instead, real estate developers have to install electric appliances like induction stoves and heat pumps. The policy went into effect in 2024 for buildings under seven stories, and will apply to taller buildings starting in 2027.