A 4040 will produce plenty of product water, and save you having to upgrade at a later date when you will need more pure.
I have recently replaced a Merlin (horrid) with an EZ-Pure.The EZ-Pure is more 'user friendly' and so far is producing more water faster.Shame the EZ-Pure DI seems to have been discontinued.
I balanced up the cost of an Ez-Pure RO which has a 21" membrane against the cost of a 4040 with a 40" membrane.And decided that I would buy a 4040 as it will produce water faster than the 21" membrane.I think I paid just over £500 for the one I bought.Gaps Water Treatment website is worth a look.
Quote from: Smithie on September 14, 2013, 08:51:08 amA 4040 will produce plenty of product water, and save you having to upgrade at a later date when you will need more pure. Wheres the best place to buy and do you need pumps?I have a vyair 400 gpd twin pump but think its not quite quick enough for what i need now