Universal 4.5-in replacement filter fits A. O. Smith whole house system AO-WH-PREL. 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.
IAPMO tested and certified to NSF/ANSI standard 42 for materials. 20 micron filtration - reduces sediment smaller than the human eye can see.
Replacements made easy - no plumber necessary. Replace filter every 3 months. Large capacity (4.5") filter is perfect for household sizes 4 or more people.
Shipping takes place within 3-5 business days. If there is a problem with the shipment of the product, we will notify you via the email address you entered when ordering.
We do not currently offer free shipping. However, this may be added at some point. We apologize.
If your order has been shipped, we will add the tracking number to your order and notify you via the email address you entered when ordering.
For returns or exchanges, please contact us within 14 days of receiving the product, along with a receipt or screenshot of the purchase, and a photo of the product with the packaging or tag intact.
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