When natural gas burns, it produces two invisible gases (carbon dioxide and water) which form the basis of all life on earth.
California government believes these two invisible gases cause smog.
“California air quality regulators on Thursday voted to require all new space and water heaters sold in the state by 2030 have no emissions, a step toward phasing out the use of natural gas for heating homes and businesses.
The provision was adopted by the California Air Resources Board at a public meeting as part of a larger plan to reduce smog and bring the state into compliance with federal air quality standards over the next 15 years.”
California takes step away from natural gas to heat buildings | Reuters