Omnipure K2533JJ Inline Water Filter Review

By Luna Regina | Updated
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A good filter is one that not only purifies water but also improves the way it tastes and smells, and the Omnipure K2533JJ Filter claims to do just that. This article aims to shed light on the features of this inline water filter in detail, so you can make an informed decision of whether it’s a unit worth buying.

Omnipure K2533JJ Inline Water Filter Review: The Defining Features

Omnipure K2533JJ Inline Water Filter
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  • NSF 42 certified

  • Lightweight- 12 ounces

  • One-year service warranty

  • Easy installation

  • Filters up to 1500 gallons

  • Inadequate installation instructions

Coming with certification for NSF Standard 42, the Omnipure K2533JJ inline water filter seems to be one of the promising products when you’re looking to improve the water aesthetically.

GAC Filter

This water filter has a Micron Rating of 5. It is effective in removing small dirt particles.

The filter is made of acid-washed granular activated carbon (GAC). It is certified by the National Sanitary Foundation (NSF) to improve the water quality in terms of aesthetics, i.e. to remove any unpleasant taste and smell in the water. It does so by reducing the amount of chlorine, hydrogen sulfide (which cause rotten eggs odor), and odors caused by organic contaminants.

If you’re using tap water with contaminants within safe limits, it can single-handedly serve to enhance the purity of the water.

However, as expected of GAC filters, the K2533JJ is not effective in removing heavy metals or other harmful pollutants. Therefore, it’s not a good idea to rely on it to filter water that is heavily contaminated, such as well water. Often, the filter is employed as a post-filter in a reverse osmosis system rather than working on its own.

Decent Filter Life

The Omnipure K2533JJ can handle 1500 gallons of water. Installed as an undersink filter, it could last half a year for a family of three.

It could last longer (10 - 12 months) as a post-filter following a reverse osmosis core. However, it’s not a great idea to leave it for more than a year, as the pollutant buildup will affect the flow. Mold may also start to develop inside the filter and contaminate the water.

Easy Installation

Omnipure K2533JJ inline water filter has a ¼” quick connect fitting. It is adjustable with refrigerators, ice makers and under-sink system. All you need to do is attach the cap and body as a single unit.

The filter maintains a consistent seal without using any adhesive such as binders or glue. It’s unlikely that you will run into any leakage problems.

Note that you will have to flush the K2533JJ before using it. Due to the nature of carbon filters, the first gallons of water will come out cloudy or grayish from carbon residue. Let water run through it for 5 to 10 minutes to clean out the residue and eliminate the air bubbles inside the filter, and you can enjoy clean, crisp water for a good 6 months.

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Luna Regina
Luna Regina
Luna Regina is an accomplished writer and author who dedicates her career to empowering home cooks and making cooking effortless for everyone. She is the founder of and, where she works with her team to develop easy, nutritious recipes and help aspiring cooks choose the right kitchen appliances.
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