Water heater drips from the condensate pipe even when not running.

Safety: Condensate is mildly acidic; use gloves.

• Check routing: Ensure the condensate pipe has a continuous fall and is not connected directly to a pressurized drain without an air break.
• Clean trap: Remove and clean the condensate trap to ensure proper operation.
• Drain connection: Verify that the household drain is not blocked, causing backpressure into the condensate line.