---
product_id: 144339301
title: "AO-WH-PREV"
brand: "a. o. smith"
price: "NZ$153"
currency: NZD
in_stock: true
reviews_count: 8
category: "A. O. Smith"
url: https://www.desertcart.nz/products/144339301-ao-wh-prev
store_origin: NZ
region: New Zealand
---

# NSF Certified Standard 42 100,000 gal capacity Built-in shut-off bypass valve AO-WH-PREV

**Brand:** a. o. smith
**Price:** NZ$153
**Availability:** ✅ In Stock

## Summary

> 💧 Elevate your home water game—pure, protected, and hassle-free!

## Quick Answers

- **What is this?** AO-WH-PREV by a. o. smith
- **How much does it cost?** NZ$153 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/144339301-ao-wh-prev)

## 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

- • **Customizable Filtration:** Use standalone or combine with other AO Smith systems to tailor your water purification to your home's unique needs.
- • **Effortless Filter Swaps:** Change filters without shutting off your water supply thanks to the innovative valve-in-head design and pressure release button.
- • **Sediment-Free Every Tap:** Enjoy crystal-clear water throughout your entire home, protecting appliances and plumbing from dirt, rust, and sediment buildup.
- • **DIY-Friendly Installation:** Includes everything you need for a quick, no-plumber-required setup—save time and installation costs.
- • **Trusted Quality Assurance:** NSF Certified to Standard 42, guaranteeing reliable removal of particulate contaminants for safer, cleaner water.

## Overview

The AO Smith Whole House Water Sediment Filter delivers up to 100,000 gallons of sediment-free water with NSF Standard 42 certification. Featuring a valve-in-head single-stage filtration system, it allows easy filter replacement without shutting off water, supports standalone or combined use with other AO Smith filters, and offers simple DIY installation with included components. Designed to protect your plumbing and appliances while enhancing water quality throughout your home.

## Description

Shop A. O. Smith Best Sellers Visit the Store Shop A. O. Smith Best Sellers Visit the Store

Review: Its a good filter - Works as it should. Put on pump suction line and it cleared my rust problem up. Only been in operation for a week. Easy to install arrows for flow.
Review: Good quality..good price - Bought 2 of these and using 2 different level filters. Working great.

## Features

- Sediment Prevention - The AO-WHO-PREV system is certified to reduce sediment, dirt and rust in your water, applicances and plumbing fixtures. Designed to bring you sediment-free water from every tap in your home.
- Easy Filter Replacement - The built-in shut-off bypass valve allows you to change filters witout turning off your water supply, and the pressure release button allows for quick, easy filter replacements. Uses universal 2.5 inch replacement cartridges (sold separately.)
- For Stand-Alone Or Combind Use - This Whole House Filter System can be used by itself or with additional A.O. Smith filtration systems, allowing you to customize your filtration system to fit your home's unique needs.
- Simple DIY Installation - Package includes filter housing, first sediment filter, and housing wrench. No plumber needed.
- NSF Certified - System is NSF Certified to standard 42 for the removal of particulate.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07R7CB28K |
| Best Sellers Rank | #33,654 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #27 in Whole House Water Treatment Systems #3,047 in Kitchen & Bath Fixtures |
| Brand | A. O. Smith |
| Brand Name | A. O. Smith |
| Capacity | 100000 Gallons |
| Container Type | Bottle |
| Customer Reviews | 4.6 out of 5 stars 686 Reviews |
| Included Components | Cartridge |
| Installation Type | Whole House |
| Item Dimensions L x W x H | 15"L x 6"W x 5"H |
| Item Weight | 1.77 Kilograms |
| Manufacturer | AO Smith |
| Material | Polypropylene |
| Material Type | Polypropylene |
| Model Name | AO-WH-PREV |
| Model Number | AO-WH-PREV |
| Other Special Features of the Product | NSF certified |
| Part Number | AO-WH-PREV |
| Power Source | Passive (Water Pressure) |
| Product Dimensions | 15"L x 6"W x 5"H |
| Purification Method | Sedimentation |
| Smart Home Compatibility | Not Smart Home Compatible |
| Special Feature | NSF certified |
| Supported Water TDS Level Maximum (PPM) | 500 |
| Unit Count | 1.0 Count |
| Warranty Description | 1-Year Limited Warranty |

## Product Details

- **Brand:** AO Smith
- **Capacity:** 100000 Gallons
- **Included Components:** Cartridge
- **Installation Type:** point of entry
- **Item Weight:** 1.77 Kilograms
- **Material:** Plastic
- **Package Information:** Bottle
- **Product Dimensions:** 15"L x 6"W x 5"H
- **Purification Method:** Sedimentation
- **Special Feature:** NSF certified

## Images

![AO-WH-PREV - Image 1](https://m.media-amazon.com/images/I/71RsudQ61AL.jpg)
![AO-WH-PREV - Image 2](https://m.media-amazon.com/images/I/81hlO2mLd9L.jpg)
![AO-WH-PREV - Image 3](https://m.media-amazon.com/images/I/81Ynng-hoZL.jpg)
![AO-WH-PREV - Image 4](https://m.media-amazon.com/images/I/71htxZ3sqzL.jpg)
![AO-WH-PREV - Image 5](https://m.media-amazon.com/images/I/519FaAoirWL.jpg)

## Available Options

This product comes in different **Style** options.

## Questions & Answers

**Q: What are the inlet & outlet threads,plastic or metal?**
A: Mine has metal thread inserts

**Q: is this filter going to reduce water pressure?**
A: Only when filter needs replacing

**Q: What is the replacement part number for the clear housing on the ao-wh-prev whole housing water filter unit?**
A: Probably as much as the whole unit cost.

**Q: What is the maximum temperature rating for this filter?**
A: NEVER SHOULD A FILTER BE INSTALLED AFTER A WATER HEATER OF ANY KIND, COLD WATER ONLY. (Great question though) In a city water situation, the filter should be connected before entering any other devise, in a well situation it should be connected after pressure tank. The reason is that the well pump can generate more pressure than filter max psi. So, if the filter were to get filled it might exceed the max psi of the filter. you can put a pressure gauge before and after the filter and mark it where it would need to be replaced before excessive pressure was achieved. I have my filter before pressure tank because my incoming well water is super clean from the well and I am the only one, except for company that is using the water. I have never had a problem yet. Also, UV filters are great for killing all kinds of bacteria for additional safe water consumption. Another point for well users is i use hydrogen peroxide to shock my well, the old chlorine days are gone. Hydrogen peroxide is a great sanitizer. and it turns to water when it's done doing its thing. No more running a hose outside for hours to get rid of the chlorine and its smell, and great to maintain proper PH.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Its a good filter
*by W***. on February 22, 2026*

Works as it should. Put on pump suction line and it cleared my rust problem up. Only been in operation for a week. Easy to install arrows for flow.

### ⭐⭐⭐⭐⭐ Good quality..good price
*by S***Y on May 14, 2026*

Bought 2 of these and using 2 different level filters. Working great.

### ⭐⭐⭐⭐⭐ Service was great
*by G***E on April 5, 2026*

Easy instal

## Frequently Bought Together

- AO Smith Whole House Water Sediment Filter - Valve-in-Head Single-Stage Filtration System - NSF Certified - AO-WH-PREV
- 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" 5 Micron Carbon Wrap Sediment Water Filter Replacement Cartridge - 2 Pack - For Whole House Filtration Systems - AO-WH-PRE-RCP2

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---

*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-05-30*