Pure Blue Reverse Osmosis Replacement Filter Pack for 1:1 Reverse Osmosis Water Filtration System
1-Year supply of professional-grade, high-performance carbon block filters for PureBlue H2O High Efficiency Reverse Osmosis System. Keeps your PureBlue RO producing the highest quality water for you and your family. Filter changes are quick and easy.
Includes:
- (2) Carbon Block Prefilters – Semi-annual change
- (1) Final Carbon Block – Annual change
- Instructions
Specifications:
- L 15in x W 10in x H 4in
- (2) High Performance Carbon Block Prefilters to Reduce Chemicals, Chlorine Taste and Odor
- (1) High Performance Final Carbon Block Filter to Enhance Quality and Taste
- Fits All Pureblue H2o Reverse Osmosis Systems
- Easy Filter Changes
- Certified Component to NSF/ANSI Standard 58 when used in PureBlue H2O models
Upgrade your PureBlue Reverse Osmosis Water Filtration System today for clean, great-tasting water all year round!


scm3hilbert –
This was the correct filters for my Pure Blue 3 stage RO system. They are very easy to install. I performed the sanitation per the manufactures instructions.
scm3hilbert –
El Profe –
We’ve been very happy with our filtration system. I was unable to find the cartridges from the Pure Blue website and was glad to have found them at Coscto.com.
El Profe –
Oak Fam –
These fit as an alternative to my much more expensive dupure filters.
Oak Fam –
Ella –
I didn’t have to wait for my order long at all. I thought since I could no longer order directly from the manufacturer that it would be a mess
Ella –
Pending –
Since changing I have had flow issues. I have contacted the company and after limited and simple suggestions they weny radio silent and left me to my own.
Pending –
Peter –
Works good but the company went out of business so now I can’t get replacement filters. Will have to buy a whole new RO system when these filters are used up.
Peter –
Linda Reed –
Each filter has a number on it 1-2-3. I got 2 filters with 1 on it and no #2 so I sent them back.
Linda Reed –
None –
Convenient to install, expensive stage 2 filter has a poor design that connects tube loosely
None –
Mary B –
I would give 5 stars, but why we is there no option to buy Stages 1-3 in one package for a better deal? Other than that, this water filter system works great. My water is delicious.
Mary B –
SaLe –
This is the first time I’m Disappointed because of the late Shipping and delivery of the item
Item arrived more than a week late
SaLe –
Fred –
Great filtration system. Reasonably priced. Said goodbye to plastic particles in plastic bottles.
Fred –
Benn –
Replacement filters work as advertised. No issues with installation. I will be replacing Stage 2 later this year and don’t expect it to be much more difficult than these.
Benn –
Judy –
I ordered 2 (two) of this product instead it came only 1 (one) product. Please respond to this issue immediately. Thanks
Judy –
Don At Home –
These cartridges are convenient and straightforward to replace. The hardest part is accessing wherever the Pure Blue water filter system is installed. For me, that meant cleaning out all the stuff that had accumulated under the kitchen sink over the past 6 months, and that took a LOT longer than replacing the filter cartridge itself. Just be sure you turn off the incoming water supply before you replace the filter cartridge, and afterwards you should run the purge cycle described in the Pure Blue water filter system instructions.
Don At Home –
Rocky –
Since these filters are replaced at different frequencies it would be nice if the filter packs quantity of each filter matched that frequency.
Rocky –
Yasuko –
No instructions in the box. If there was the paper, it’d be very helpful. I use internet how to change the filter
Yasuko –
Flustered123 –
My mistake, I thought a filter pack for the system would have all 3 filters but it came with 2 stage 1 filters and 1 stage 3 filter. No stage 2 and I’m not sure why it’s sold this way but one can purchase the stage 2 filter at a significantly higher price. I should have looked closer.
Flustered123 –
Kody –
In my current life state, I’m going through a break up which is rough. There are days I’m sad and eat ice cream to deal with my problems, and then there are days I’m happy. It’s a process. What always brings me a little bit of happiness is knowing that my water taste so much better than her water. It’s lame, but it brings happiness to my spirit. Anyways, these are the filters I use and the water is phenomenal. Not only is it better than her water, it’s better than like all the other water out there.
I’d also like to add that I’m a plumber and I install the fancy R.O. Systems. Honestly, they taste no different than this. These are great. Truly, these filters are the bomb. Not only are they helping me emotionally, but physically as well because now I don’t have to drink nasty Arizona tap water
Kody –
BowWowMama –
Great availability for our RO system. We can order all the replacement filters for our unit. Fast delivery and great pricing.
BowWowMama –
Tom G –
This is an absolutely great RO water filtration system and a particularly great value. This is the second such system as I bought it again when I recently moved. The water tastes absolutely fantastic and the cost of replacement cartridges is very reasonable. I’d highly recommend this system to anyone.
Tom G –