Customer is on a propane tank. Just filled it up in early December and is already empty. Propane company that they are renting the tank from wanted a pressure test before messing with their tank. Turned iff off and capped 2 fixtures. Water heater and furnace. Disconnected soft copper line main from regulator at tank and pressurize to 15 psi. Waited 30 minutes with no drop. Reassemble the main and regulator, uncapped and reinstalled flex lines for heater and furnace. Thank you for choosing te with your plumbing needs.