Costco Members: Pure Blue 1:1 Reverse Osmosis Water Filtration System Expired

I recommend these. 40 micron (size of a hair) + carbon filter. https://www.amazon.com/Whirlpool-...X0DER&th=1 [amazon.com]

I've own these for 20 years. Replaced one after 15 years. They often go on sale for $300-$350. I got mine at local Menards.

Other/similar item around $369: https://www.menards.com/main/plum...73&ipos=30 [menards.com]

There are system that does both soften and water filter, if you need water softener too that is: https://www.amazon.com/Whirlpool-...07R62N8SQ/ [amazon.com]

airgap for the dishwasher.

Thanks for your reply. What do you think about the issue of water from RO leeching minerals from your body and causimg negative health effects?

I work at a water store and remove generic brand ones all the time to install ours (pentair,hydrotech) beware of filters costing insane amount of $$$

Our filters for our units cost about 50 bucks yearly for 3

Also this might not be a 1/1 system meaning you'll waste more water (edit: I see it says it's a 1:1 system)

Thanks for your reply. What do you think about the issue of water from RO leeching minerals from your body and causimg negative health effects?

No, unless there is something else that needs to be removed from your water. Your hardness level is perfect. Very low hardness level water does not taste good. Some RO systems include a cartridge with calcite to increase hardness to improve taste.

Oh slick deal people trying to turn a buying site into twitter.

So I had an iSpring 6 stage filter which had issues. After about a year, the tank went bust, they sent a new tank. Then one sudden week a year later when I was away, wife called saying the kitchen was flooded, I just asked her to turn off the supply valve to stop the flooding. By the time I got back home, I just didn't have the patience to "debug" where the leak originated. And trust me if this is happening under your sink you will be rightly upset. A while before this happened, we had a leak because one of the filters and the end fittings (weren't properly seating in the filter, the connections just wouldn't sit no matter what we tried). When I called iSpring, they sent me a new filter and some quick connect fittings, and I thought the trouble was behind us. iSpring stopped short of saying that "yeah some filter ends were susceptible to loose quick connect based connections". But when the final leak occurred when I was away, that was the straw that broke the camels back. Enough is enough.
With the tank issues and leaking filters, you run the risk of the your kitchen flooding and leaking water everywhere. I then found the Waterdrop D6, and that is what I've been using since. Its been 6 months and it works fine for me although it has its own drawbacks. I've also supplemented it with a re-mineralization filter to get back essential minerals back in the water. MY source TDS is not too bad to begin with (between 68 and 90 over seasons, east coast), but the taste is horrible without RO. The one thing about the Waterdrop D6 RO is that there is only 1 filter to change and there is very little reason to suspect leaks. The mechanism to replace filters is very simple: twist and pull, and replace, unlike the 6 stage filters (good luck doing this every 6months to a year, it becomes draining after a bit, unless it is placed in an easily accessible area).
I went with the D6 knowing what issue I had with leaks. it also has its shortcomings. It is plugged into an outlet, so I can't use it if there is a power outage. The water pressure at the spigot is considerably lower than the iSpring tank based solution.
The iSpring works based on natural water pressure of your supply line (in most cases). So you can use the filter all the time, even without electricity. The D6 has a motor in it, which is somewhat annoyingly loud at times. The iSpring water to waste ratio was 1:1.5 or 1:2 (yeah that was bad), the D6 is 2:1, much more efficient in this sense.
I really wished there were better products out there for the home (such as the Xiaomi Mijia Water Purifier 1600G) in the US.