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3M Aqua-Pure Whole House Scale Inhibition Inline Water System AP430SS, Prevents Scale Build Up On Hot Water Heaters and Boilers

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Availability: Only 3 left in stock, order soon!
Fulfilled by Eplumbing source

Arrives Monday, Oct 26
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Size: 1 Count (Pack of 1)


Style: AP430 System


Features

  • Helps Inhibit Scale: Polyphosphates included in This Product bind calcium and magnesium hardness minerals, preventing them from becoming a solid to help reduce the build-up of mineral scale in pipes and water using appliances
  • Helps Protect Hot Water Heaters: Extend the life of water-using appliances such as water heaters, clothes washers and dishwashing machines, as well as plumbing fixtures like faucets, pipes and shower heads by reducing scale build-up and corrosion
  • Not a Filter, A Scale Reduction System: System diverts only a small portion of water passing through the system head into the cartridge to inject polyphosphates in minute concentrations and return it to the water supply to help reduce scale build-up
  • Minute concentrations of polyphosphates help reduce scale build-up by inhibiting the build-up of hardness minerals onto metallic surfaces. Polyphosphates also help reduce corrosion by forming a thin protective layer on the inner-surface of pipes
  • Maintains Efficiency: By Inhibiting Scale Build Up On Heating Elements, Helps Maintain Water Heater Efficiency
  • Easy To Replace: Easy Change Out Of The 3M Aqua-Pure Ap431 Replacement Water Cartridge Makes System Maintenance Easier
  • High Flow Rates: The AP430SS provides unrestricted flow of up to 10 gpm (37.9 lpm) when installed with 3/4 NPT inlet/outlet connections
  • System is to be installed on cold water line feeding water to the water heater. Included System Head fittings are two 3/4" NPT (female) connections. Additional parts and tools are required for installation and not included
  • For parts and tools required, read all instructions carefully and measure your cold water line feed pipe before attempting to start installation

Description

The 3M Aqua-Pure Whole House Scale Inhibition Inline Water System Ap430Ss Is Designed To Help Reduce Scale Build-Up And Corrosion - Thereby Helping To Extend The Life On Hot Water-Using Appliances Such As Water Heaters (Standard (Gas Or Electric) And Tank-Less), Boilers, Clothes Washers And Dishwashing Machines, And On Plumbing Fixtures Like Faucets, Pipes, And Shower Heads. The Ap430Ss Provides Flow Of Up To 10 Gpm With ¾” Npt Inlet/Outlet Connections. Scale Is Calcium And Magnesium Deposits That Often Form When Hard Water Is Heated. Water Hardness Is Responsible For Most Scale Formation In Pipes, Water Heaters, Finishes And Flat Surfaces, And Other Water Using Appliances. Over Time Scale Build-Up Can Significantly Shorten The Life Of Any Water-Using Appliance. Also Scale Buildup Inside Pipes Causes Loss Of Water Pressure As The Interior Gets Smaller And Smaller Over Time. The Ap430Ss Contains Polyphosphates To Bind Calcium And Magnesium Hardness Minerals, Helping To Prevent Them From Precipitating Out (Or Becoming A Solid) And Building Up On Metallic Surfaces. Polyphosphates Also Helps Prevent Corrosion By Forming A Thin Protective Layer On The Metal Surface. The 3M Scale Inhibition Water System Ap430Ss Is Tested By Nsf International To Nsf/Ansi Std. 42 For Material And Structural Requirements Only. The Overall Single Vessel/Cartridge Design Of The Ap430Ss Makes The 3M Aqua-Pure Ap431 Water Filter Cartridge Change-Out Easy For Professionals As Well As End Users. Change Disposable Filter Cartridge Every 6 Months Or Sooner If You Observe Noticeable Reduction In Water Flow Rate. The Ap430Ss Is To Be Installed On The Cold Water Supply Line Of The Water Heater Or At Point-Of-Entry Of Water Into The Home. Tools And Parts Required (Not Included): One ¾” Stop And Waste Valve (Compression Type), Ptfe Tape, Two ¾” Male X ¾” Street Adapters, One ¾” Compression Gate Valve, And Pipe Cutter. Read All Instructions Carefully Before Attempting To Start Installation. The Existing Shut-Off Valve Remains In Place And Still Acts As The Cold Water Shut-Off. This Filter System Has 3/4” Connections. The Ap430Ss Can Be Adapted To Various Pipe Sizes By Using Reducing Adapter On Either End. Installation Fittings Can Be Sweated Or Threaded. Use Galvanized Fittings For Installation On Galvanized Pipe.

Material: Polypropylene (PP), Stainless Steel


Product Dimensions: 2.8"D x 2.8"W x 10.2"H


Item Weight: 1.9 pounds


External Testing Certification: NSF


Product Benefits: Prevents scale build-up and corrosion in water heaters boilers, maintains efficiency


Model Number: AP43011


Product Benefits: Prevents scale build-up and corrosion in water heaters boilers, maintains efficiency


Brand Name: Aqua-Pure


Number of Packs: 1


Set Name: AP430SS


Global Trade Identification Number: 74


Manufacturer Warranty Description: Warranty


Unit Count: 1 Count


Number of Items: 1


Included Components: Head and Cartridge, User's Manual


Item Type Name: Scale Inhibition System


Manufacturer: 3M


Manufacturer Part Number: AP430SS


Material Type: Polypropylene (PP), Stainless Steel


Compatible Water Purifier Models: 3M AP430SS


Item Dimensions D x W x H: 2.8"D x 2.8"W x 10.2"H


Item Weight: 1.9 pounds


External Testing Certification: NSF


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Oct 26

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


  • So far, so good....
Size: 1 Count (Pack of 1) Style: AP430 System
I hardly ever post reviews, but I must review this item. I purchased this in lieu of a water softener. I have very hard water and really didn't want to deal with salt delivery, so I gave this a shot out of desperation...with low expectations. Over the years, I've tried gimmicks on the market with 0.00% results (electrical coil thing comes to mind). After two months of use, I can say that this in fact does seem to prevent about 75% of hard scale build-up. Instead of hard to remove scale and large sediment chunks in my faucet aerators, I'm seeing more of a white dust. In removal of all my aerators for inspection, I'm seeing about 75% less hard clogging scale. My dish-washer also appears to have a white dust coating inside as opposed to hard scale all over the place. My wife says that the glassware is coming out of the washer much cleaner also. So far, so good. Not sure how long this "filter" will last, but I'm fine with the cost of replacement every couple of months if that's what it takes. Might last longer, not sure yet. Btw...I installed this filter right before water enters my tank-less water heater. Installation is simple...use Sharkbite PTC fittings, tubing and make sure to add a SharkBite ball valve before and after the filter. Pretty simple installation. ... show more
Reviewed in the United States on January 26, 2018 by Jim Van Halen

  • Perfect for Swamp Coolers
Size: 1 Count (Pack of 1) Style: AP430 System
***EDIT*** July 25 Been using this on my swamp cooler now for 7 years. My cooler still has the original pads, (10 years old). I’ve replaced the cartridge every other year. I recently learned about water treatment with Citric acid. I'm not sure if this cartridge has Citric acid in it but I wanted to try it on my Swamp Cooler. I rigged up the fittings to supply water to my cooler. I ran it this year from May to the end of October. My cooler is 3 years old. We have extremely hard water here in the Mojave. I cleaned the pads and wet side of my cooler the best I could this spring. I still had scale buildup left over from the previous two years of use. When I started using my cooler this year I considered my pads to be 30% plugged up with hard water deposits. I just winterized my cooler yesterday, (Halloween) and now my pads are 95% clean. Also the wet side of my cooler is 100% clean. My cooler does have a purge pump that dumps all the water out of my cooler once a day. All that did for me before this year was water my lawn in one spot. This year with this setup and the purge pump, it helped keep my cooler clean. I've already recommended this setup to all my friends for next year. ... show more
Reviewed in the United States on November 1, 2018 by Troy Leonard

  • Careful if you have a swimming pool that is filtered by this Inhibitor.
Size: 1 Count (Pack of 1) Style: AP430 System
Love the filter for the house, just know that if you have a swimming pool and test for calcium hardness, you liquid test kits and even the pool store tests will be way off and show low calcium hardness even though your CH in the pool is fine.
Reviewed in the United States on June 9, 2026 by syboman

  • Seems Like a Logical Component of a Tankless Water Heater
Size: 1 Count (Pack of 1) Style: AP430 System
Easy install. Hopefully will eliminate complicated cleaning of tankless hot water heater. Just ordered a second one.
Reviewed in the United States on June 18, 2026 by Conspicuous Consumer

  • Works great but needs to be flushed after initial install and filter changes.
Size: 1 Count (Pack of 1) Style: AP430 System
Be sure to flush the filter with something that doesn’t have a fine filters for 5-10 mins or so after installation. I have those electric smart toilets and it filled the bowls with little pieces black plastic and clogged their inline filters. Game changer in water quality. My showers and appliances are as grateful as I am. ZERO spots on the shower doors or sinks. ... show more
Reviewed in the United States on August 30, 2025 by Jamie

  • Simple solution without sodium
Size: 1 Count (Pack of 1) Style: AP430 System
This turned out to be a simple, effective solution to two problems associated with my well water. At 12.86 gpg of CaCo3 (Calcium Carbonate) or 2.36 gpg above the "Very Hard" threshold, I had problems with calcium deposits in my boiler from the boiler feed water inflow and problems from my hot water throughout the house. Since all the water going to my dishwasher came from a hot water line, water spots on glassware were unsightly. I installed the Aqua-Pure AP430SS just before both the boiler feed and the supply to the indirect hot water tank. The water spots are gone and there are more soap bubbles when showering. A note to those who think the shiny silver thing on the top assembly is an overpriced ¾" SS tee. . . it's more than that. It is a machined casting with a scoop diverter to cause some of the water flowing through it to flow downward into the canister where it mixes with the food-grade poly phosphate in the replaceable canister before it returns through small holes drilled inside the tee to the pipe above where it ties up the CaCo3 as it flows on its merry way unable to plate our as scale. Time will tell, but, I prefer it over a water softener because it is sodium free which seems like a good thing in this stressful world of high blood pressure. Also, it won't kill the beneficial bugs in my septic system. Whew – enough said! ... show more
Reviewed in the United States on October 22, 2015 by J. Hudon

  • One of a kind solution to a problem that is rampant with aquifer water that is filtered by limestone.
Size: 1 Count (Pack of 1) Style: AP430 System
This is a supreme solution for those with tankless hot water heaters without a water softener installed. My plumber had been discouraging people from buying tankless hot water heaters in my location (Austin, TX) due to the extremely high levels of calcium in the water that comes from the aquifers serving San Antonio and Austin (The Trinity and Edwards Aquifers). When I showed him this solution in person, he completely changed his tune and made sure to take down the brand and model of it as this is the only thing of its kind on the market. Now cleaning out my tankless hot water heater will become a once a year job instead of every 4 to 6 months. This also stops the limescale buildup in showers, dishwashers and washing machines. Make sure you buy two and keep a replacement on hand for when it stops removing the calcium from the water, it can vary vastly on the TDS concentration in your municipal water system. While this is perfect for tankless hot water systems where cold water pressure is not pushed against by a tank of hot water that often fills from the bottom, this filter will not work for tank based hot water heaters, you will end up having hot water backing up into the activated filter ruining its effectiveness. This was shown to me by my plumber and it is good to know before buying it for that purpose. Only buy this for a tankless hot water heater. ... show more
Reviewed in the United States on March 31, 2016 by Jason S.

  • Affordable but a bit Sketchy
Size: 1 Count (Pack of 1) Style: AP430 System
Installation was easy enough, but . . . . if this is installed in the crawlspace, as would be common for most exterior tankless units, the replacement frequency means a trip under the house every 6 months. For a young guy, that might not be too bad, but could be pretty rough as I get older. Even in a convenient location, too easy to forget. Unit should be scaled to last a year. The actual attachment of the replacement canister is too small, and is plastic, so it would be easy to cross thread and ruin the canister. It felt more than a little sketchy to me. For something that will cause major damage if it fails, it should be more robust. To replace, you will have to turn off the water. I installed a valve immediately before this unit, so minimize the downpour when replacing. The price is right, but I think the design could have used a lot more thought. ... show more
Reviewed in the United States on November 5, 2025 by Randy Gloden

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