---
product_id: 260028257
title: "AO Smith 2.5\"x10\" 5 Micron Carbon Block Sediment Water Filter Replacement Cartridge - 2 Pack - For Whole House Filtration Systems - AO-WH-PRE-RC2"
brand: "a. o. smith"
price: "KD 10.68"
currency: KWD
in_stock: true
reviews_count: 5
category: "A. O. Smith"
url: https://www.desertcart.com.kw/products/260028257-ao-smith-2-5x10-5-micron-carbon-block-sediment-water
store_origin: KW
region: Kuwait
---

# 5 micron ultra-fine filtration 6-month easy DIY replacement Certified NSF filter media AO Smith 2.5"x10" 5 Micron Carbon Block Sediment Water Filter Replacement Cartridge - 2 Pack - For Whole House Filtration Systems - AO-WH-PRE-RC2

**Brand:** a. o. smith
**Price:** KD 10.68
**Availability:** ✅ In Stock

## Summary

> 💧 Elevate your home’s water game with premium clarity and effortless upkeep!

## Quick Answers

- **What is this?** AO Smith 2.5"x10" 5 Micron Carbon Block Sediment Water Filter Replacement Cartridge - 2 Pack - For Whole House Filtration Systems - AO-WH-PRE-RC2 by a. o. smith
- **How much does it cost?** KD 10.68 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.kw](https://www.desertcart.com.kw/products/260028257-ao-smith-2-5x10-5-micron-carbon-block-sediment-water)

## Best For

- a. o. smith enthusiasts

## Why This Product

- Trusted a. o. smith brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Value-Packed 2-Pack:** Double the freshness with two genuine AO Smith replacement cartridges included.
- • **Effortless Maintenance:** Replace your filter in minutes—no plumber needed—keeping your system running smoothly.
- • **Crystal Clear Every Tap:** 5 micron carbon block traps sediment invisible to the naked eye for pristine water flow.
- • **Trusted NSF Certified Quality:** Filter media meets rigorous NSF standards ensuring reliable contaminant reduction.
- • **Optimized for Small Households:** Designed for 1-4 people with a high flow rate of up to 4 gallons per minute.

## Overview

The AO Smith 2.5"x10" 5 Micron Carbon Block Sediment Water Filter Replacement Cartridge (2-pack) is engineered for whole house filtration systems, delivering ultra-fine 5 micron sediment removal certified by NSF. Designed for households of 1-4 people, it supports a high flow rate of up to 4 GPM and offers easy, tool-free replacement every 6 months. This genuine AO Smith filter ensures longer-lasting appliances and cleaner water from every tap, making it a smart, reliable upgrade for health-conscious professionals.

## Description

Filter for use with: Whole House Sediment Filter (AO-WH-PREV or AO-WH-PRE). Use only certified, genuine A. O. Smith filters for continued contaminant removal and system performance. Longer lasting appliances - whole house filter system designed to reduce sediment from every tap. 5 micron filtration - reduces sediment smaller than the human eye can see. Replacements made easy - no plumber necessary. Replace filter every 6 months. Standard capacity (2.5") filter is perfect for household sizes of 1-4 people. Includes 2-pack of replacement sediment filters.

Review: It filters the water. Very good, no smells at all and was a perfect replacement size
Review: I really did my homework on these filters. I have a 2 stage whole house filter system so I have to think carefully about what I use. For my first stage I have a sediment filter with added polyphosphate to deal with scaling (quality filter made by 3M). This A.O. Smith is my second filter. The things I have to worry most about in my water are chlorine and chlorine byproducts as well as atrazine. Note the following review is entirely in the context of needing a whole house filter with a very high flow rate. Carbon block filters can be NSF rated at 42 or 53. For the 42 standard, manufacturers can talk about reducing the problematic taste or appearance of contaminants. For the 53 standard, manufacturers can talk about the health effect of removed contaminants. The bad news for people with 10 x 2.5 housings is that, I don’t think, there is a single carbon filter on the market in this size, with a decent flow rate, that claims the NSF 53 standard compliance. I believe this is because the filter is simply too small to meet the standard. So we’re stuck with the NSF 42 standard. There is more bad news here. I don’t think there is a single filter in this size, with this flow rate, that is fully certified by NSF to meet the 42 standard. There appear to be three levels that NSF certifies. One is the materials used in the filter are to spec, the next is that the filter housing is to spec, and finally there is certification that the filter produces water that meets the standard. What you get with the A.O. filter here is certification from the NSF that the filter media meets spec. That appears to me to be as good as it gets after spending 1/2 of an entire Sunday researching this. On the upside this is, as far as I can tell, one of, if not the, highest flow rate filters in this size with an NSF certification. At 4 gpm it’s WAY higher than most filters in this class. The amount of water this filter will treat is not stated explicitly anywhere, but since they’re saying it might last 6 months they seem to be estimating it will last over 10,000 gallons which is amazing for this type of filter (I sincerely doubt it will last 10,000 gallons). However it does appear to be a true carbon block filter which could account for its longevity. So back to water quality. It’s easy enough to know if a filter like this is removing chlorine because of the taste and smell. However, at least for me, it’s much harder to know if it’s removing trihalomethane or atrazine. There is reason to believe it IS removing those contaminants because the mechanism of action is similar to how chlorine taste and smell are removed. However I can't be sure without doing expensive lab tests, that's what the NSF 53 standard is for. And again, I don't think there is a single filter in this form factor certified to the NSF 53 standard. You may spot something like the Matrikx and think "oh he's wrong" but that filter has a flow rate of .75 gpm, it's just not practical for whole house applications. Overall this filter is a very good choice. For the price and the size it may be the best filter choice if you need a high flow rate for whole house applications. 4 gpm will be able to work for 1 or two people but will struggle beyond that. On the negative side there is no mention of whether the carbon block is coconut shell so it probably isn't (coconut shell is preferred). Also, on first use I had about 5 gallons of water that came out pretty dark with carbon fines. This isn't necessarily bad but something to keep in mind if you use this as a pre-filter because those fines will not be good for the filter that come after this one. You'll want to flush from a faucet that doesn't not have a screen because I got two fairly large chunks of carbon in addition to fines in that first 5 gallons.

## Features

- Filter for use with: Whole House Sediment Filter (AO-WH-PREV or AO-WH-PRE). Use only certified, genuine A. O. Smith filters for continued contaminant removal and system performance.
- Longer lasting appliances - whole house filter system designed to reduce sediment from every tap.
- 5 micron filtration - reduces sediment smaller than the human eye can see.
- Replacements made easy - no plumber necessary. Replace filter every 6 months. Standard capacity (2.5") filter is perfect for household sizes of 1-4 people.
- Includes 2-pack of replacement sediment filters.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07R2F8VX3 |
| Brand Name | A. O. Smith |
| Customer Reviews | 4.7 4.7 out of 5 stars (940) |
| External Testing Certification | NSF |
| Item Dimensions D x W x H | 6.4D x 12.7W x 25.4H centimeters |
| Item Weight | 1 Pounds |
| Manufacturer | AO Smith |
| Manufacturer Part Number | REACH 2 6 |
| Material Type | Carbon |
| Model Number | AO-WH-PRE-RC2 |
| Number of Items | 2 |
| Product Benefits | Removes Dust |
| Unit Count | 2 Count |

## Product Details

- **External testing certification:** NSF
- **Item weight:** 1 Pounds
- **Material:** Carbon
- **Product benefits:** Removes Dust
- **Product dimensions:** 6.4D x 12.7W x 25.4H centimeters

## Images

![AO Smith 2.5"x10" 5 Micron Carbon Block Sediment Water Filter Replacement Cartridge - 2 Pack - For Whole House Filtration Systems - AO-WH-PRE-RC2 - Image 1](https://m.media-amazon.com/images/I/81CNdhnCkBL.jpg)

## Questions & Answers

**Q: Are these effective at reducing contaminants like Lead and/or Arsenic?**
A: No. I use a RO (reverse osmosis) system for removing arsenic.

**Q: How does this differ from AO-WH-PRE-RCP2? Is it just filter life, or does one filter better than the other?**
A: This is what our installer recommended. We have not used any other filter as these work very well. We change them about every 5 months.

**Q: how frequntly should they be changed?**
A: The package indicates the filter lasts up to six months.   I usually change it within the fifth month.

**Q: Do these fit in the 4200WW14 housing ?**
A: Yes

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by V***N on 2 March 2026*

It filters the water. Very good, no smells at all and was a perfect replacement size

### ⭐⭐⭐⭐⭐ Review
*by E***S on 8 September 2022*

I really did my homework on these filters. I have a 2 stage whole house filter system so I have to think carefully about what I use. For my first stage I have a sediment filter with added polyphosphate to deal with scaling (quality filter made by 3M). This A.O. Smith is my second filter. The things I have to worry most about in my water are chlorine and chlorine byproducts as well as atrazine. Note the following review is entirely in the context of needing a whole house filter with a very high flow rate. Carbon block filters can be NSF rated at 42 or 53. For the 42 standard, manufacturers can talk about reducing the problematic taste or appearance of contaminants. For the 53 standard, manufacturers can talk about the health effect of removed contaminants. The bad news for people with 10 x 2.5 housings is that, I don’t think, there is a single carbon filter on the market in this size, with a decent flow rate, that claims the NSF 53 standard compliance. I believe this is because the filter is simply too small to meet the standard. So we’re stuck with the NSF 42 standard. There is more bad news here. I don’t think there is a single filter in this size, with this flow rate, that is fully certified by NSF to meet the 42 standard. There appear to be three levels that NSF certifies. One is the materials used in the filter are to spec, the next is that the filter housing is to spec, and finally there is certification that the filter produces water that meets the standard. What you get with the A.O. filter here is certification from the NSF that the filter media meets spec. That appears to me to be as good as it gets after spending 1/2 of an entire Sunday researching this. On the upside this is, as far as I can tell, one of, if not the, highest flow rate filters in this size with an NSF certification. At 4 gpm it’s WAY higher than most filters in this class. The amount of water this filter will treat is not stated explicitly anywhere, but since they’re saying it might last 6 months they seem to be estimating it will last over 10,000 gallons which is amazing for this type of filter (I sincerely doubt it will last 10,000 gallons). However it does appear to be a true carbon block filter which could account for its longevity. So back to water quality. It’s easy enough to know if a filter like this is removing chlorine because of the taste and smell. However, at least for me, it’s much harder to know if it’s removing trihalomethane or atrazine. There is reason to believe it IS removing those contaminants because the mechanism of action is similar to how chlorine taste and smell are removed. However I can't be sure without doing expensive lab tests, that's what the NSF 53 standard is for. And again, I don't think there is a single filter in this form factor certified to the NSF 53 standard. You may spot something like the Matrikx and think "oh he's wrong" but that filter has a flow rate of .75 gpm, it's just not practical for whole house applications. Overall this filter is a very good choice. For the price and the size it may be the best filter choice if you need a high flow rate for whole house applications. 4 gpm will be able to work for 1 or two people but will struggle beyond that. On the negative side there is no mention of whether the carbon block is coconut shell so it probably isn't (coconut shell is preferred). Also, on first use I had about 5 gallons of water that came out pretty dark with carbon fines. This isn't necessarily bad but something to keep in mind if you use this as a pre-filter because those fines will not be good for the filter that come after this one. You'll want to flush from a faucet that doesn't not have a screen because I got two fairly large chunks of carbon in addition to fines in that first 5 gallons.

### ⭐⭐⭐⭐⭐ Review
*by D***J on 6 March 2026*

Great fit, cheaper than name brand

## Frequently Bought Together

- AO Smith 2.5"x10" 5 Micron Carbon Block Sediment Water Filter Replacement Cartridge - 2 Pack - For Whole House Filtration Systems - AO-WH-PRE-RC2
- AO Smith 2.5"x10" 5 Micron Sediment Water Filter Replacement Cartridge - 2 Pack - For Whole House Filtration Systems - AO-WH-PREV-R2
- AO Smith 2.5"x10" 20 Micron Sediment Water Filter Replacement Cartridge - 2 Pack - For Whole House Filtration Systems - AO-WH-PRE-RP2

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*Product available on Desertcart Kuwait*
*Store origin: KW*
*Last updated: 2026-05-13*