AO Smith 4.5x10 20 Micron Sediment Filter Replacement Cartridge for Whole House – AO-WH-PREL-RP

Cleaner water for every tap with a trusted whole-house solution

The AO Smith 4.5 x 10 inch sediment replacement cartridge is designed to fit the AO-WH-PREL whole-house filtration system. This genuine A. O. Smith part delivers a reliable layer of 20 micron filtration, capturing fine particulates you can’t see, while supporting steady flow from every faucet.

Built for households of 4 or more, the filter features a large 4.5 inch diameter and 10 inch length, offering generous capacity so you can schedule swaps with ease. Using genuine filters helps maintain consistent contaminant removal and overall system performance over time.

What this means in everyday use

• Consistent filtration at the point of entry, reducing sediment at every tap
• Potentially improved water clarity and reduced buildup on fixtures
• Convenient, tool-free replacement that doesn’t require a licensed plumber

Key details include compatibility with the Whole House Filter System with Timer (AO-WH-PREL), the 20 micron specification for subvisible sediment, and a recommended replacement interval of every 3 months. This cartridge ships as a single replacement part, making maintenance straightforward for households focused on long-term filtration performance.

Maintenance and usage scenarios

• Install with the AO-WH-PREL system to keep filtration consistent across the home
• Schedule replacements around seasonal water use or when you notice more sediment on fixtures

Explore the benefits of filtered water from the very first faucet turn, with a cartridge designed to support steady appliance performance and cleaner-tasting water. While results can vary, choosing a genuine A. O. Smith replacement helps align with the system’s design for sustained filtration and efficiency.