In Plumbing System | Airlock

Disclaimer: If your home uses a well pump instead of municipal water, turn the pump off before attempting any reverse-pressure methods to avoid damaging the pump impeller.

If you don’t have a hose, or the problem is a single cold tap: airlock in plumbing system

For a moment, nothing happened. The hose went rigid, filling with high-pressure cold water. The bathroom tap groaned. Arthur imagined the scene inside the copper veins of his house—the cold water rushing up, a blue army charging toward the trapped bubble of air. Disclaimer: If your home uses a well pump

He realized, with a sinking feeling, that he had created a perfect loop-de-loop in the hot water line. It looked stylish. It looked efficient. It was, however, a trap. The bathroom tap groaned

"The shower is bone dry," she called back from the bedroom. "And I have a meeting in forty minutes."