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Aquasana AQ-4000 has PROBLEMS...! SOLUTION!
on June 19, 2006
I have a water well, so I do NOT want to restrict water flow to my kitchen sink faucet...!!!
As soon as I installed their AQ-4000 "sink top" model-
I noticed it took MUCH MUCH longer to fill the sink with unfiltered water (for dishes...)?!
I removed their aerator assembly..., and discovered it had a "non-removable!" VERY SMALL 5/32"..., "permanent" METAL restrictor hole!
I then installed their optional "Under-Sink Install Kit" (AQ-4056 (best), or AQ-4050 (MUCH less$)) .
This complete kit has a faucet that mounts to sink-top (NOT very easy, but worth it!- Drill 7/8" hole, mounting bracket screws are too large..., connect new water-T...)-
I now have good filtered water, and a "normal" water flow at the sink faucet! :o)
UPDATE!- CONS (after using it for 6mo.- I'd now downgrade it to a 1 (they don't give 0!)!-
1. Changing the filters is a HASSLE! Had to work hard & gouge the down filter out with several tools (sticks BADLY!). Yes, it started leaking too!
Reverse Osmosis/distllled water has a BAD ph, and necessary minerals are removed!
2. I since got a Whirlpool UltraEase "PLUS!" under sink water filter mounting kit (Lowes only). Lines from AQ4000 fit it to the sink top faucet. They also carry sink top faucets, and filter mounting kits (in-store- couldn't find mounting kit online?).
Review the filtration specs on this NSF (govt.) approved Whirlpool "Plus" filter- lead/flouride/cysts/..., VERY impressive specs., for most home users!