iSpring US31 3-Stage Water Filtration System

Reverse Osmosis Systems

iSpring US31 3-Stage Water Filtration RO Compatible Replacement Filters

The iSpring US31 is a 3-Stage under the sink water filtration system that provides filtered water. This system utilizes a 5 micron sediment filter with two 5 micron carbon block filters to produce great tasting filter water. Find the compatible replacement filters below along with parts, manual and change-out schedule.

Replacement Filter Info

Sediment Filter (93023) - Replace every 6-12 months or as needed

Carbon Block Filter (OMB934-5M) – Replace every 6-12 months or as needed

Carbon Block Filter (OMB934-5M) – Replace every 6-12 months or as needed

Helpful Filter Information

Not all filters have the same replacement schedule. Replace the RO membrane filter every two years. Replace all other filters every 6-12 months. Help keep your system sanitary by never using filters longer than 12 months, except the RO membrane filter, regardless of how much water you use.

Manuals & Instructions

iSpring US31 Owner's Manual