Banging or gurgling sounds in the pipes (water hammer). ⚠️ Prevention Tips
Water supply systems are designed to be a closed loop of liquid. When air enters the system—whether due to maintenance, a leak, or a drain-down—it can become trapped in high points of the piping. Because air is compressible and water is not, this bubble acts like a barrier, preventing the water from pushing past it. In a hot water tank scenario, this usually manifests as no water (or spluttering water) coming from the hot taps, while the cold water runs perfectly fine. air lock in hot water tank
The tap "coughs" or sprays water inconsistently. Banging or gurgling sounds in the pipes (water hammer)