OMG, not Amway followers again, please stop!

From Espring manual (I'm not making it up, you can search yourself, page 3, #2

The eSpring Water Purifier is designed for use only with cold, bacteriologically
suitable (potable) water

This Class B system conforms to NSF/ANSI 55 and contains an ultraviolet lamp
that requires replacement at intervals in accordance with the manufacturer’s
instructions. The device is designed for the supplemental bactericidal treatment
of disinfected public drinking water or other drinking water that has
been tested and deemed acceptable for human consumption by the state and
local health agency having jurisdiction. The system is only designed to reduce
normally occurring non-pathogenic or nuisance microorganisms. Class B
systems are not intended for treatment of contaminated water.

Just read it one more time. Supplemental treatment of already clean water. Can only reduce non-pathogenic or nuisance microorganism.
Let's continue, it's fun. #7

Except for lead and a few other compounds, the eSpring Water Purifier
is NOT designed to remove soluble inorganic substances such as iron,
calcium, magnesium, nitrates, arsenic or fluorides.

hmmm... Sure you call calcium and magnesium "useful minerals". What about iron, nitrates and arsenic? Guess they were not the part of "removes 140 elements". You know that most quality 3 stage filters with sub-micron will remove iron, nitrates and arsenic, right? Geez, most iron can be removed by simple 20RM sediment filter...

Let's go even further. Page 15:

Rated Service Life: The Cartridge is designed to serve the average family’s
cooking and drinking water needs for one year or 1320 U.S. gallons (5000 L),
whichever comes first.
NOTE: Actual Cartridge life will vary with the amount of use and quality of the
water supply.

Now connect the dots. If you use pure water, as suggested above, it will last 5000L. If water is relatively bad and contains a lot of impurities (like what we have in Malaysia), then this number drops like a rock. From my experience, 5 micron sediment filters needs to be replaced (or washed, if pleated polyester) every 3-4 months, otherwise no flow. That means that our Malaysian water can kill a filter within 3-6 months. So if we assume that filter can last 1 year, it simply means that Espring doesn't filter most impurities.

I got all this from Espring manual, didn't make any of it up, everyone can check it if you don't trust. I think this should conclude our discussion on MLM products and bring us back to real world of filters. Admins can pin this information to the top, would be helpful.
P.S. and while we're at it, let's go through the propaganda booklet that was presented by Amway people few pages ago. Again, you can verify it all.
Claim 11:  Effectively removes particulates down to 0.2 microns including asbestos, sediment, dirt, and scale

OK but...

Claim 15: Effectively removes waterborne parasites larger than 3 to 4 microns

Didn't they just mention that everything down to 0.2 microns is removed? Why mention particles of 3-4 microns and larger? Now I see how you got "140 contaminants", why not 1400, you can list everything that's larger than 0.2 microns one by one.
Claim 17: Does not remove beneficial minerals such as calcium, magnesium, and fluoride

Forgot to mention iron, arsenic and nitrates from #7 above. Selective marketing?
Claim 18: Ultraviolet light destroys more than 99.99% of waterborne disease-causing bacteria and viruses in drinking water

In their own manual they clearly say non-pathogenic or nuisance, now suddenly it's disease-causing. Not good to lie, I'm guessing that's why there is no information for that claim.
Claim 20: The cartridge will treat drinking and cooking water for 5,000 litres (1,320 gallons) or one year, whichever comes first

The U.S. Environmental Protection Agency (EPA) estimates that
the average person consumes 1.63 litres of liquids per day,
based on nine different surveys taken from literature (4). This would
equal 3,570 litres (943 gallons) per year.

No comments. I think the whole booklet was assembled from Wikipedia quotes and Amway people didn't even bother to check the math. 1.63*365=3570?

Claim 23: Uses exclusive patented technology

Ok. But all 3 are related to carbon block and most are dated back to 1986. Only one is from year 2000. So the system is basically a carbon block with 30 years old technology. What "advanced technology of BMW" are we talking about??? (yes, there are some electronics patents but these are not relevant to filtration).

Isn't it disheartening to see how Amway agents answer espring customers who are facing the problem of frequent cartridge replacement than recommended period/capacity  in the manual?
One possible cause of your problem is very likely due to the malfunctioning of the monitoring module ( the transparent acrylic box at he top of the filter with electronic board inside). Just like any other electronic appliances, they are more prone to malfunction than non electronic one.
Amway don't repair the monitoring module, they replace it at the cost of RM630 if your espring warranty already expired. No such thing as foc repair as claimed by one espring agent in this thread. The cartridge though has life time warranty....haha ! what's the point of life time warranty when the max you can use is one year.

Best to avoid water filter that has electronic and requires electricity to operate.

Why not instal the 10" filter at POE?  With that, you don't need pre filter at every outlet.
Take note that you must buy the 10" filter housing that comes with pressure release button.