The 1 year warranty 40 gal bringing everything to code an Making it safe in the process We would be replacing the gas Isolation valve at the water heater. Replacement of a total of about 3' of 3/4 copper with a new ball Valve Cutting out and removing the saddle valve that supplied water to the ice maker After draining the old water heater. Cut out about 3 ft of 3/4 copper an plumbed in new with a new shut off. I moved the water heater about a ft over to get more fall on the vent. Then I plumbed in the gas line an installed a new gas valve to make it safe after completing then install I fill the unit an checked for leaks none found then fired the water heater up waited about 20 min checked to see if the water was getting warm it was I walked over the new unit with the home owner 1 year parts an labor warranty