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expired Posted by phoinix | Staff • Last Tuesday
expired Posted by phoinix | Staff • Last Tuesday

$151.99*: Express Water Under Sink Reverse Osmosis Alkaline Water Filtration System at Amazon

$152

$270

43% off
Amazon
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Amazon [amazon.com] has Express Water Under Sink Reverse Osmosis Alkaline Water Filtration System for $189.99 - 20% when you 'clip' the coupon on product page = $151.99.
Shipping is free.

Price
$118 lower (44% savings) than the list price of $269.99

Savings
Apply 20% coupon (check and activate [amazon.com])

*Previous 🔥Frontpage Deal at $152 with 60 Deal Score and 93 comments.

Customer reviews
4.6⭐ / 8,424 global ratings
500+ bought in past month

amazon.com/dp/B00MU20LN2 [amazon.com]

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Deal Details
Product Info
Community Notes
About the Poster
Amazon [amazon.com] has Express Water Under Sink Reverse Osmosis Alkaline Water Filtration System for $189.99 - 20% when you 'clip' the coupon on product page = $151.99.
Shipping is free.

Price
$118 lower (44% savings) than the list price of $269.99

Savings
Apply 20% coupon (check and activate [amazon.com])

*Previous 🔥Frontpage Deal at $152 with 60 Deal Score and 93 comments.

Customer reviews
4.6⭐ / 8,424 global ratings
500+ bought in past month

amazon.com/dp/B00MU20LN2 [amazon.com]

My other deals

#pfd, #pfpd

Community Voting

Deal Score
+3
Good Deal
Visit Amazon

Price Intelligence

Model: Express Water Alkaline Reverse Osmosis Water Filtration System - 10 Stage RO Mineralizing Purifier - Mineral, pH +, Antioxidant - Under Sink Water Filter with Remineralization - 50 GDP

Deal History 

Sort: Most Recent
Post Date Sold By Sale Price Activity
06/02/25Amazon$141
2
05/22/25Amazon$152 frontpage
93
04/15/24Home Depot$152
4
11/21/23Amazon$150
23

Current Prices

Sort: Lowest to Highest | Last Updated 7/17/2025, 10:25 PM
Sold By Sale Price
Amazon$189.99

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Last Tuesday
956 Posts
Joined Mar 2023
Last Tuesday
BigBG
Last Tuesday
956 Posts
Buy the s**t outta that
2
Last Tuesday
175 Posts
Joined Nov 2016
Last Tuesday
dhanushshai
Last Tuesday
175 Posts
What about installing it?
Last Tuesday
817 Posts
Joined Dec 2009
Last Tuesday
hellagrant
Last Tuesday
817 Posts
Quote from dhanushshai :
What about installing it?

Installation is fairly diy, the only advanced part is drilling a hole on the counter. Will require a special drill bit.

Alternatively you can just replace the kitchen faucet to a new one that has a special part for this type of installation.

Or if you have those small sinks in a kitchen that is secondary, just turn that into a reverse osmosis only water faucet.
Last Tuesday
129 Posts
Joined Aug 2015
Last Tuesday
quickstart88
Last Tuesday
129 Posts
what's the ratio to water waste?
Last Tuesday
37 Posts
Joined Dec 2013
Last Tuesday
Towncivilian
Last Tuesday
37 Posts
Thanks, bought one since my existing RO filter is needing replacement and I dislike the unknown brand one my plumber installed. Also bought a permeate pump to increase efficiency.
Pro
Last Wednesday
3,389 Posts
Joined Jun 2012
Last Wednesday
jl2672a
Pro
Last Wednesday
3,389 Posts
I have an identical unit made by ispring.

The positives? Great performance with low TDS. Also, great customer service. I emailed them about the outlet faucet leaking and they sent me a new one free.

The negative? The 3 top filters are an absolute misery to replace. I honestly have no idea why they don't make it as simple to replace as the bottom 3 twist offs. You need a plumber's license to replace the top 3 filters with the little connectors and it is near impossible to do it without leaks. I'm fairly handy and it has never taken me less than 5 hours of cussing to replace all 6 filters. Never mind keeping the order of the filters and position and water direction in the same place.
Pro
Last Wednesday
3,389 Posts
Joined Jun 2012
Last Wednesday
jl2672a
Pro
Last Wednesday
3,389 Posts
Quote from jl2672a :
I have an identical unit made by ispring.

The positives? Great performance with low TDS. Also, great customer service. I emailed them about the outlet faucet leaking and they sent me a new one free.

The negative? The 3 top filters are an absolute misery to replace. I honestly have no idea why they don't make it as simple to replace as the bottom 3 twist offs. You need a plumber's license to replace the top 3 filters with the little connectors and it is near impossible to do it without leaks. I'm fairly handy and it has never taken me less than 5 hours of cussing to replace all 6 filters. Never mind keeping the order of the filters and position and water direction in the same place.

Here's an idea of what you are in store for: this is my list of notes from the last time I did the replacement. I dread doing it every year.


I spring water filter replacement

Red tube is water incoming


Sanitize system before replacing filters. Remove all 3 bottom filters. 3 spoonfuls of bleach into first filter housing. Remove all filters. Replace housing. Remove membrane. Replace membrane cap. Sanitizing will destroy whatever filters are still on. Do this before replacing with new filters!


Replacing filters


Stage 1 - sediment filter 5 micron (model FP15) 6 months

Stage 2 - GAC Carbon Filter (model FG15) 6 months

Stage 3 - CTO Carbon Filter (model FC15) 6 months

White tubing to reverse osmosis element

(Remember to disconnect and flush after replacing stage 1,2,3 filters!!!)


Stage 4 - Reverse Osmosis membrane
(Model Greatwell MC7 75Gpd ) 2-3 years

Touch only blue plastic housing to avoid contamination. Replace o ring on threading, not the cap.

Stage 5 - Post Carbon (Model FT15) 1 year

Alkaline Water Filter (Model FA15) 1 year

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