Aquasafe RO/DI?

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Using a Aquasafe for about 5 years. Removed the post carbon filter, replaced my membrane once, try to replace my pre-filters about every 6 months and DI lasts about a year. Other maintenance is replaced the ASOV a couple of times and one check valve.

Not including water changes due evap use about 2 gpd. No leaks and I'm happy with it.