Whirlpool
Hydraulic Shock / Water Hammer
Water hammer or banging pipes when water heater cycles or valves close
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Possible Causes
Fast-closing valves, high water pressure, lack of water hammer arrestors, loose piping
How to Fix / Troubleshooting
Safety first: Secure ladders or access if working near ceiling pipes.
Mitigation:
- Check water pressure; if high, install or adjust a pressure-reducing valve.
- Install water hammer arrestors near quick-closing fixtures (dishwasher, washing machine).
- Secure loose pipes with proper clamps and supports.
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Repair Difficulty
Easy
2/5
Required Part
Water Hammer Arrestor (plumbing accessory)
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