I installed the Viqua 12 system in my RV. Unfortunately I learned after my first use to do a better job of draining water from the system after use. The unit is mounted horizontally and there was a small amount of residual water after I blew out the system for storage. The sleeve shattered at on end. I may try and find a way to mount vertically to help with drainage in the future. But the system works well when working.