Aqua-Pure Undersink Water Filter AP431 by AQUACREST

AquaCrest Replacement For Aqua-Pure Water Filter AP431


  • Works exactly like the original filter
  • Scale and corrosion inhibition helps extend life of water heaters
  • Free shipping and 100% money back guarantee

In stock

$18.89 /pack

Price $ 21.99 (14.10% off)

$18.89 /pack

Price $ 21.99 (14.10% off)

AquaCrest Replacement For Aqua-Pure Water Filter AP431

The AquaCrest AQU-AP431 is replacement for Aqua-Pure Water Filter AP431. The AQU-AP431 water filter is made from premium material to extend life of water heaters.


Product Information

*Please note this is a compatible water filter. The water filter is not sourced by or sponsored by 3M. The manufacturer's name and part numbers have been used for reference purposes only. AquaCrest is an independent brand.


Five Stars
Five Stars

Works like a charm! Love the price…

5 stars
Good product fast shipment

Thanks for a good product.
I just installed a new (oil) boiler and my plumber installed the AP431 to keep the "tankless" hot water heat exchanger clear of minerals.
I will need this one in a few months and I bought in advance since the price was right. Thanks for a good product.

Quality replacment
This seems to be a high quality replacement filter. We have had problems with other brands fitting properly and leaving black chunks (harmless charcoal, but not appetizing) in our water, we have had no problems with this brand.

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It can be used for 6 months. But the filter life will vary based on your water conditions. Therefore, it is recommended you change your filter every 6 months or sooner when you notice a change in taste, odor, or flow of the water being filtered for optimal performance.
Yes. It is highly recommended you flush the filter before using. Water filters are made from advanced coconut activated carbon, so there are some carbon fines in the filter. It is quite normal. You need to flush firstly to remove those carbon fines to get clean water.
Yes. You must replace the filter every 6 months or sooner. Otherwise, there may be heavy sediment or rust in your filter system, which will cause filter fatigue and therefore the water damage.
AquaCrest Replacement For Aqua-Pure Water Filter AP431