How do I choose and install the right Unifrost water filter kit for a U40-15 or U230-175 ice machine?

Pick the kit based on your water conditions and your machine’s water demand, then install it so cartridge changes are quick and consistent.

1) Choosing the right Unifrost filter components

Start with the Unifrost complete kit (SA30007) as the typical “ready to fit” option for new installs.

Use the I40002-CN as the main filter cartridge replacement in that system.

Add or replace SA950750 PP cotton pre-filter cartridges where your site has visible sediment, older pipework, or you want extra protection for the main cartridge.

If you are unsure which cartridge combination to run on a U40-15 versus a higher-output machine like the U230-175, use this rule of thumb: the higher the daily ice demand and the harder your water, the more important it is to size the filtration correctly and keep spares on hand. Where there’s any doubt, match the final selection to the Unifrost documentation for your model or ask Unifrost support to confirm compatibility.

2) Installing it properly (applies to U40-15 and U230-175)

Mount location: on a solid wall or frame, close to the machine, protected from knocks, and with enough space below for cartridge removal.

Valving: fit an isolating valve before the filter, and ideally a second valve after it, so you can change cartridges without disrupting other equipment.

Direction of flow: follow the arrows on the housing and cartridge.

Flush before connection: flush the new cartridge(s) to a drain until water runs clear, then connect to the machine’s inlet.

Label and schedule: write the install date on the housing and set a recurring reminder for cartridge changes.

If the site already has a central filtration system, do not assume it is suitable for ice. Confirm it is food-safe, has adequate flow for the ice machine, and does not starve the unit during peak service.

Read the full guide: Unifrost Ice Machine, Bin, and Water Filter Setup: A Checklist for New Irish Installations.