Service call for gas leak . Found one small leak on a joint above the furnace duct work of the gas line feeding the hot water tank . Removed about 7 feet of gas line ( 3 joints ) . Disassembled , cleaned , Teflon and re installed gas line . Tested with combustible gas leak detector all accessible gas line and soaped all fittings on water tank gas line no other leaks . Roughly 15 of 1 inch line in crawl space. Performed a dial tested on house and passed with no issues .