I can't tell if the filters are uniform and easy to obtain - if it has special sized filters, you may have to order them from only the manufacturer. Other than that observation, it looks to be a reasonable system at a good price. Read the reviews on it to help decide. It may take an extended time period to collect enough RO water for brewing. I collect about 9 gallons a day, so over the course of a couple days I have enough to brew 10 gallon batches. YMMV, of course.