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AO Smith

AO Smith Whole House Water Sediment Filter - Valve-in-Head Single-Stage Filtration System - NSF Certified - AO-WH-PREV

    • Based on 491 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Tuesday, May 7
Order within 13 hours and 6 minutes
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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.

Brand: AO Smith


Special Feature: NSF certified


Product Dimensions: 15"L x 6"W x 5"H


Included Components: Cartridge


Package Information: Bottle


Purification Method: Sedimentation


Model Name: AO - WH - PREV


Product Dimensions ‏ : ‎ 15 x 6 x 5 inches; 3.89 Pounds


Item model number ‏ : ‎ AO-WH-PREV


Date First Available ‏ : ‎ April 26, 2019


Manufacturer ‏ : ‎ AO Smith


Best Sellers Rank: #31,611 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #20 in Water Softeners


#20 in Water Softeners:


Customer Reviews: 4.6 4.6 out of 5 stars 491 ratings


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, May 7

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Clear cover on the filter is the only way to go
Review Image by Tim Hunkler Tim Hunkler
I purchased two of these filter units for serial installation on the infeed side of an on demand electric hot water heater. I really like that they are transparent, which makes decided on when the filter needs changed an easy decision. The handles which put the filter into bypass for filter changes are very very stiff. In fact the supplied handle is needed to get an extra handle length and increase torque. As luck would have it one of mine was so close to a wall I could not get the handle on the bypass handle. However, elsewhere in the system there were water turn offs and so with the water off, I just release pressure and unscrewed the clear filter cover without messing with the bypass control arm. Easy peazy. I've been pleased with these filters, and they use the same size filter material as my RO system. I think that is 3" dia x 10" tall, and these can be purchased in bulk for a decent price. So far so good. I actually wish I had them farther upstream as well, prior to the water softener and iron removal systems on the cold side. A potential future project. ... show more
Reviewed in the United States on January 24, 2023 by Tim Hunkler Tim Hunkler
    • Does it’s job
Works as expected. The only minor issue was getting the bypass handle to turn the first time.
Reviewed in the United States on July 19, 2023 by ROBERT OCONNOR
    • High Quality water filter features
Review Image by Floyd Floyd
Review Image by Floyd Floyd
We bought this AO Smith whole house water filter after our extensive search on our favorite supplier website, Amazon. We were looking for a water filter that had a high quality filter abilities, off, bypass, and filter adjustments, as well a highly competent 3/4 inch filter “in and out” threads. This filter has metal inserts, which were highly important to us after having read so many reviews demonstrating most of the other brand filters with 3/4” plastic treading usually leaked according to many reviews. Why buy something right off the bat that has build in flaws like a leaking from in and out soft plastic threads. We have the new AO Smith filter that we just received and haven’t installed it yet. The included photos of our pump house setup for a rain catchment tank in Hawaii is still under daily use. That filter has plastic threads and Does Not leak, but we opted for a new filter after several years, because our filter o-ring was a problem. Keep in mind too, not only does the AO Smith water filter have water line metal thread inserts, it also has a unique o-ring placement that looks great in the top of the high tempered, plastic screw off, filter containment chamber. I believe the O-ring has the good possibility of not giving us the trouble as compared to the o-ring we have now that sits up in the filter upper housing. Time can only tell what’s what’s once we get the new water filter installed. I’ll try to update this review with any pros or cons once the new filter is in operation a reasonable amount of time. In the meantime, I suggest you carefully compare as I did before quickly buying a water filter. It is important to be an informed buyer. There are so many water filters on Amazon, but we think we may have bought the best one for our purpose. We do know the AOSmith filter has those real important features I mentioned that are a must in a filter. Having taken the new AO Smith filter out of the box as soon as we got it, we were very impressed over the high quality appearance of this filter it presented. We considered too the AO Smith name, a long standing reputable company name. ... show more
Reviewed in the United States on March 13, 2021 by Floyd Floyd
    • No drips no runs no errors
Easy to install. Connections well made no leaks. Handle easy to move from Bypass, off. Handle is large and Strong.
Reviewed in the United States on June 29, 2023 by Tom D
    • Simple solution to cut back on scale
I was wanting to protect our new tankless water heater by reducing as much sediment as possible before our city water supply enters our new expensive water heater. This seems to fill the bill. Already changed the filter for the first time and it went off without a hitch.
Reviewed in the United States on May 10, 2023 by Mark W Mumma
    • Water flow gpm
I was concerned that this filter would decrease my water flow to the house. Before I installed it, I had 11 gallons per minute, after the install it was 10.5 gallons per minute. Still very acceptable.
Reviewed in the United States on May 20, 2023 by Pamela Jones
    • Buyer beware: internal passages only 7/16"
Review Image by Bob A. Bob A.
First off, this seems well built for the price. The control valve has positions for filter, off, and bypass. The filter housing is clear (a must) and takes standard 2.5" by 10" filters. A demerit as the filter housing is the male screwing into the valve assembly and (the bad part) the o-ring sits in a groove atop the housing. This would seem problem-some. As can be seem in the photo, I bought 2 and run them in series. The first contains the 5 micron white filter and the second the 1 micron charcoal filter. I run off a well and there is torpidity (fine silt) in the water. Sometimes it is no problem and sometimes it is. When the well is upset it will kill a charcoal filter in a day or two so being able to bypass it w/o effecting the white fiber filter was important. There are twin filter products out there but I didn't see separate controls so I went this way. BTW -- adding a pressure gauge downstream was easy and advised! Also, a wrench is included to install the filter. DON'T USE IT. The filter housing should be fine with a good hand tighten. Perhaps the wrench can be used to loosen the housing. The control valves are very hard to turn and there is a clever way the wrench can be used for leverage. BAD NEWS: The actual internal orifice in the filter is barely 7/16's of an inch. Maybe a generous 3/8's. Very maddening when your plumbing it with 3/4" PVC. Even in 'bypass' I loose 10lbs of pressure (of 50) working through that obstruction. That is why 3 stars. Nowhere is this information published. You open the box and see for yourself. ... show more
Reviewed in the United States on August 11, 2022 by Bob A. Bob A.
    • Easy replacement
Likes stopped leaky old one. works great once installed. no leaks! Wish it came with a better wall mount. will need a grounding wire setup if you have metal pipes
Reviewed in the United States on February 16, 2023 by B and T

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