Install new 40 gal water heater to current California code. New water flex lines and ball valve. Thermal expansion tank to be set to house pressure. Gas line is a copper what looks to be 3/8” size. Recommend to install a 1/2” galvanized pipe to properly feed the water heater for proper functioning. We will connect below house and run piping up thru cabinet and stub out with a new gas valve and flex line to water heater. 1 year parts and labor warranty. Installed a temp set for the time being until mitigation work is done and we can install water heater to permanent spot.