Take a short length of garden hose. Connect one end to the problematic hot water tap and the other to a functioning cold water tap (usually the kitchen sink).
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A tap remains completely dry even when fully open. how to get rid of airlock in water pipes
If the airlock is in a bathroom or an area where you cannot easily connect a hose, you can try to use gravity to help.
You may hear gurgling, hissing, or knocking sounds within the pipes. Take a short length of garden hose
A length of garden hose (or a flexible washing machine hose) and duct tape (optional).
An airlock occurs when a bubble of trapped air blocks the natural flow of water in your plumbing system. This typically happens after the system has been drained for maintenance or during a water outage. Common Signs of an Airlock If the airlock is in a bathroom or
Water emerges in irregular bursts or spurts mixed with air.