Blog
LX Hot Tub Pumps: Part Numbers, Mounting Styles & Replacement Mistakes
Posted by The Spa Guy
LX pumps are some of the most widely used spa pumps in America. You’ll find them inside dozens of major hot tub brands because they are dependable, standardized, and readily available.
But when it comes time to replace one, that “standardization” is exactly what causes confusion.
Let’s break it down the right way.
How LX Pump Part Numbers Actually Work
Most LX spa pumps begin with WUA.
Common series numbers include:
WUA100WUA150WUA200WUA300WUA350WUA
…
Feb 11th 2026