The A.O. Smith AO-WH-PREV is a whole house filter system designed to reduce sediment, scale, dirt and rust from every tap which can cause damage to your appliances and plumbing fixtures. It undergoes Mechanical Filtration that also helps to improve the turbidity of the water. It is suitable for households with up to 4 people.




Why Choose Our Product



    • Includes filter housing, sediment filter, housing wrench and all parts necessary for installation
    • Can be used as a standalone system or with additional A. O. Smith systems
    • NSF Certified to Standards 42 for the removal of particulate class V.
    • Has a built-in shut-off bypass valve for changing filter without turning off water supply
    • Has a built-in pressure relief button for easier filter changes
    • 1 year product warranty
    • Filters can last up to 6 months


Height:14.17 in.
Width:5 in.
Depth:5 in.
Flow Rate:4 (Gallons per minute)
Min. Feed Temp:40° Fahrenheit
Max. Feed Temp:100° Fahrenheit
Product Weight:6 lbs.
User Manual and Leaflets
Attachment Size
ao-wh-prev_ownersmanual.pdf 5.02 MB