Skip to main content Currently Reading Will S.F. residents have to ditch their gas stoves, heaters? S.F. wants to ban them, but it could cost up to $5.9 billion FacebookTwitterEmail 1of2 Casa Adelante apartments in S.F. were built in compliance with local ordinances banning natural gas.Carlos Avila Gonzalez / The Chronicle 2020Show MoreShow Less 2of2 A heat recovery ventilator, which captures warmth from interior air and applies it to fresh external air to diminish energy usage at the Casa Adelante apartments at 2060 Folsom in San Francisco, Calif., on Tuesday, December 29, 2020. Casa Adelante is being built in compliance with local government ordinances that passed this year banning or restricting natural gas in new construction. Various cities around California have passed such laws, including San Francisco.Carlos Avila Gonzalez / The ChronicleShow MoreShow Less