3M AP420 Large Scale Prevention System

I like this product very useful

This cartridge is of the same quality as was in the original filter. Would Highly recommend to anybody who has 3M whole house filter AP141T.

Very good.

Delivered on time. 3M product has no problems at all.

Usually after replacing cadridge we would have frothy water for 2 days. But that is Missing in this.

This price is wrong. How can cartridge price be 32k if the complete casing with filter is 14k?

It is becoming black in few days only.. If I buy from shop it is not ..

Is this right price? When the whole unit itself below 14k, a replacement cartridge costs 32k?

I own a Navien Tankless water heater. Because I have hard water a water softener filtration system is essential in protecting the Heat Exchanger from harmful hard water and iron content. As you will see in the picture how much hard minerals the Aqua Pure filter captures. This was the brand recommended by my plumber who regularly services my tankless water heater. So start now protecting your Tankless water heater’s heat exchanger with an Aqua Pure replacement filter.

Installed in April 2015. When the original 3M filter looked dirty we tried a “generic” filter with disastrous results - the housing would not seal and water poured out of the top of the filter housing. Reinstalled the dirty filter until we could get the genuine filter ordered and delivered. 3M says six months is the average filter life and that may be so if it’s used for the whole house. Ours is used only to remove the scale & sediment that would otherwise go into the tankless electric water heater. These filters last us anywhere from 12 months to 18 months depending on the quality of the water that our city provides. YMMV. Our faucet screens used to fill up with tiny white calcium deposits but now that almost never happens. The showerheads also stay cleaner for a long time. Not cheap but neither is replacing the water heater. Highly recommend.

What a difference this makes in a whole house filter. vs just a sediment filter of the same micron size (on well water....Michigan sand strata...well is 145 ft down .... living by Lake Michigan).... This also will really help to protect the filters on the reverse osmosis system used for drinking water in the house. Noticed that Fe rust was gone immediately and I'm sure it will work on scale reduction for the hot water tank. Longevity will need to be determined but planning on changing every six months. So the two cartridge deal will be good for a year supply.

We've used these for years to protect our tankless water heater from scale. It has been doing the job.

After finding gravel in our facet screens we had this filter installed. No more gravel, less hard water deposits and the water tastes fine. The biggest thing is to watch the filter and change it when it gets dirty. We'll worth the invesment.