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3M Aqua-Pure AP800 Series Whole House Replacement Water Filter Drop-in Cartridge AP817-2, Large Capacity, For use with AP802 Systems

(8 customer reviews)

CLEANER DRINKING WATER – This filter cartridge reduces chlorine taste and odor and sediment
RADIAL FLOW DESIGN – The design of this filter cartridge allows for the use of fine activated carbon, maintaining water pressure
WHOLE HOUSE FILTRATION – This filter cartridge fits into systems that filter water throughout the home for appliances, sinks, bathrooms, and laundry
IDEAL FOR THREE TO FOUR BATHROOM HOMES – This large capacity filter cartridge is ideal for homes with three to four bathrooms
LARGE CARTRIDGE – Cartridge height is 20 inches, offering a flow rate of 20 gallons per minute
HOUSING COMPATIBILITY – Use this filter cartridge with 3M Aqua-Pure Whole House Water Filter Housing AP802T and AP802B as well as most competitive 4.5” diameter drop-in whole house water filter housings


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SKU: B003N4WDBE Category:

The 3M Aqua-Pure Whole House Replacement Water Filter Drop-in Cartridge AP817-2, Large, has soft neoprene gaskets on both top and bottom that assist in the prevention of unfiltered downstream water. Its flow rate is 20 gallons per minute. This is a filter cartridge for a whole house water filter system, which helps protect pipes and appliances from sediment and provides great tasting drinking water from anywhere in the home.


The Aqua-Pure® AP817-2 Water FilterCartridge helps reduce chlorine taste and odor as well as particulate and rust, providing clearer, more appealing water throughout the whole house. The carbon filter cartridge provides a high flow for up to six months before replacement.

The cartridge is manufactured by 3M Purification Inc., formerly CUNO Incorporated. It uses granular activated-carbon media to reduce chlorine taste and odor, has a 25-micron filtration rating for particulate reduction, and a flow rate of 20 gallons/75.7 liters per minute. The cartridge operates at temperatures from 40-100°F/4.4-37.8°C. It is for use with the following Aqua-Pure systems: AP802, AP802-1.5C. The cartridge should be replaced every six months, or sooner if a noticeable reduction in flow rate occurs.

Whole-house water treatment systems range from simple canisters with disposable filter cartridges to complex systems of tanks and filters for different contaminants. A system that includes a water softener may be bypassed by a cold drinking water line to provide salt-free drinking water. Whole-house systems are typically installed immediately after water meters and well pumps, and thus may be referred to as point-of-entry (POE) systems. Depending on the filtration and treatment processes, they remove or reduce iron, particulate, chlorine odor and taste, and other chemical and biological contaminants. In doing so, they help protect plumbing and fixtures, reduce unpleasant tastes, colors and odors; and, in some cases, provide healthier water. Regular maintenance of a whole-house water filter system may be as simple as replacing a filtration cartridge every six months, or may require an annual service call. The initial expense of a whole-house water filter system often pays off in the long term, as it may protect pipes and fixtures from iron and/or hard water deposits and discoloration and provide savings in bottled water costs.

For more than a century, 3M has applied innovation and technology to improving our customers’ lives and supporting their business goals. Today the company, from its headquarters in St. Paul, Minnesota, serves industrial and commercial customers and consumers in nearly 200 countries. 3M Purification Inc. (formerly CUNO Incorporated), provides filtration and separation solutions for food service, science labs, residential, marine, and other applications. The 3M brand, across thousands of products, represents consistency, superior quality, and value.

Specification: 3M Aqua-Pure AP800 Series Whole House Replacement Water Filter Drop-in Cartridge AP817-2, Large Capacity, For use with AP802 Systems

Weight 5.34 lbs
Dimensions 20 × 4.5 × 4.55 in

8 reviews for 3M Aqua-Pure AP800 Series Whole House Replacement Water Filter Drop-in Cartridge AP817-2, Large Capacity, For use with AP802 Systems

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  1. lobuxracer

    I installed this filter in a dual filter system, the first is a sediment only filter for 1 micron before my pressure regulator, the second is this filter after the pressure regulator. I tested for chlorine before and after. Chlorine was present before, there is zero chlorine after installing this filter. The water is so clean, I can put it directly in my freshwater aquarium without adding any stabilizing chemicals. Since I did the filter housing installs myself, I installed pressure gauges in three places – before the regulator, after the regulator before this filter and after this filter. I see no pressure drop across the filter while running a single shower. I imagine if I turned on all four showers in the house at the same time, I would see some pressure drop, but that’s not a normal scenario, the most I ever see with my family is two showers or baths at the same time. This isn’t the least expensive filter out there, but it is NSF 42 rated which adds cost to producing these units. My source water is pretty good to start with, pH is 7.0, kH and gH are 3, so I do get the full 6 months service life from my filters. I have great confidence this will extend the service life of all my household plumbing, and after this filter had been in place for 4 months, I replaced all the shutoff valves (multi-turn valves with rubber washers) with 1/4 turn ball valves to further reduce contamination in the system. We removed the filters from our refrigerators as they are now redundant and only slow the flow. We couldn’t tell the difference between straight tap water and refrigerator filtered water after installing this whole house unit anyway. I’m glad to be out of the $100 spend every 6 months for refrigerator only filters! Best of all, with this configuration, the bottom of the toilet tanks (replaced all the toilets with dual flush after installing the new filter) has remained pristine so I am confident the sediment filtering is working as intended too.Read more

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  2. Shopsmith

    This product is one of the cartridge options for the Aqua-Pure system we bought:Aqua-Pure AP802 Water Filter System, Whole House, 45 gpm . Ultimately, though, it’s the filter cartridge that determines what you will filter out of your water. This Aqua-Pure system let us choose between – particulate and chlorine removal (this product) – particulate-only removal (Aqua-Pure AP810-2 (AP802-1.5-C) Replacement Cartridge, 5 Micron Rating Water Filter ) We opted for this filter cartridge. because we wanted to filter out chlorine and crud. Also very important is that we still get good water flow after running through the filter. We still get 20 gpm after our water runs through the filter. Other systems drop down your water flow to 5gpm, after you run through the filter. That wasn’t going to work for us. (Obviously if you don’t already *have* at least 20gpm, using this filter won’t increase your water flow. It just won’t drop it below 20gpm.) Our 80psi water pressure has not suffered, either, from what we can tell. You can maintain an even higher water flow if you choose the particulate-only filter (AP810-2, link above), but it’s not worth it for us. We wanted the chlorine to be filtered, too, and our water flow has not suffered. We have to change the filter cartridge every 6 to 12 months, but at $50/pop, that’s acceptable. The Aqua-Pure system is inexpensive. It was originally made by a company called Cuno which got bought by 3M. We’ve been very pleased with 3M products in the past, so we had confidence of the brand. And so far, it’s been everything we hoped for. The water tastes great, and there’s no chlorine smell, and no more clogging up of our faucets. We’re very pleased with it.Read more

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  3. C&J

    This is the same whole house filter( manufacture and model) my plumber installed a year and half ago but cheaper on amazon. The manufacturer says to replace every 6 months but we can get over a year with 3 -4 people in the house with no reduction of water pressure. This blocks chlorine and sediment along with other chemicals in city water, making the water as pure as can be.Read more

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  4. David Thompson

    These water filters bounced around in shipping and the external is black with the plastic wrap off. I’m not sure if I want to use them for drinking water given that they’re dirty. I may return them.Read more

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  5. Gary B from HB

    It does a good job of removing off-flavors and chlorine. I am reminded of how well it performs every year when I clean the filter housing prior to filter replacement and see all the debris and junk it keeps out of my water.Read more

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  6. Gretta

    Thank you Aqua Pure for making an affordable filter that does a great job as a pre-filter or main filter when using the bigger unit.Read more

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  7. ehu mama

    This filter came with a hole in it. The shipping package was in tact but upon installation, we discovered a hole in it. We had to wait to install the filter and now it is past the return date. Next time know to check the product even if we aren’t using it right away.Read more

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  8. ElliE

    Easy to install and works great! It does its job because the old one was completely dirty.Read more

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    3M Aqua-Pure AP800 Series Whole House Replacement Water Filter Drop-in Cartridge AP817-2, Large Capacity, For use with AP802 Systems
    3M Aqua-Pure AP800 Series Whole House Replacement Water Filter Drop-in Cartridge AP817-2, Large Capacity, For use with AP802 Systems


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