A rattling noise is never a good sign. Most of the time, it’s a signal that something is loose inside the tub’s housing or plumbing. It could be a worn-out Whirlpool jetted tub part, like a mounting bracket or impeller. If the pump isn’t mounted properly, vibrations can cause it to knock against surrounding components.

Read more: https://livepositively.com/strange-noises-coming-from-your-whirlpool-jetted-tub-here-s-what-it-means/