How can you shift an airlock in a domestic water system?

To shift an airlock in a domestic water system, first, locate the affected faucet or outlet and open it fully. Next, turn on the highest tap in the house, such as a shower or sink, to allow air to escape. If necessary, you can also increase water pressure by turning on the cold water supply to a nearby tap or using a hose to force water into the system. This should help dislodge the trapped air and restore normal water flow.