A:Answer Thank you for your inquiry, BlueDawn70! The loud popping or thud sound you're hearing when your Insignia washer finishes filling is likely caused by your home's plumbing, not the washer itself. This is a common issue known as "water hammer," where sudden valve shutoff creates a pressure surge in the pipes. It's especially common in homes with older or high-pressure plumbing. Tine | Insignia Support