APEC Water Systems FILTER-MAX-ES50 50 GPD Essence 5 Stage High Capacity Filter Set Review

The 5 stage filter set is a set of replacement filters for Reverse Osmosis Drinking Water System. They protect and extend the life of the Reverse Osmosis Drinking Water System. It is compatible with industry standard sized under counter reverse osmosis systems. These are mainly designed to fit any 50 GPD (gallons per day) standard size filter.

It includes five filters in total for the reverse osmosis filtration process. It is known for long durability and reliability with the quality filter set suitable for removing a wide range of water contaminants. An effective filtration technique of reverse osmosis is used to filter drinking water.

APEC Water Systems FILTER-MAX-ES50 50 GPD Essence 5 Stage High Capacity Filter Set Review

APEC Water Systems FILTER-MAX-ES50 50 GPD Essence 5 Stage High Capacity Filter Set Review is designed to meet the needs of the consumers. After hours of research, testing and analyzing the features, we put APEC Water Systems FILTER-MAX-ES50 50 GPD Essence 5 Stage High Capacity Filter Set Review is a one of the best in our Reverse osmosis system List.

Noteworthy features

There are excellent features that make this product a recommendable one. Here are some of them.

5-stages of filter

The first stage has a five micron 10-inch filter to remove sediment. It can remove any dirt, dust or rust particles. Removal of large sediments helps to protect the life of the membrane and the osmosis system. It also increases the life of the system.

The second and third stage filters are 10 microns 10-inch filters that can remove chemicals from the drinking water. It can remove Volatile organic compounds (VOCs) and other harmful chemicals such as chlorine. It is also responsible for the taste, odor, cloudiness and color of the water after filtration.

The fourth stage is a high rejection Thin Film Composite (TFC) reverse osmosis membrane. It removes major contaminants such as bacteria, fluorine, chlorine, arsenic, lead, radium, chromium, and many others. It removes nitrates as well which gives the confidence about removing any other unhealthy chemicals in water.

The fifth and the final stage is a 10-inch filter consisting of Coconut Shell Refining Carbon. If you are trying to filter tank water, this stage of filtering can remove any residual taste from the water.

APEC Water Systems FILTER-MAX-ES50


The APEC Water Systems Filter set is a good choice for long-term use at homes for filtering drinking water. The carbon post filter and the membrane can give a life of around two to four years. The filter set can work efficiently for over six months.

They need not be changed even if you are not using it for about 10 to 14 days. A continuous stagnation will not cause any harm unless it is exposed to extreme weather conditions. It is safe at room temperature. So you can leave it as is and enjoy a family trip without any worries.


Although it is targeted to be suitable for APEC 50 GPD Essence under counter reverse osmosis system, it fits into all standard sized under counter reverse osmosis system.

According to industry standards, the APEC Water Systems FILTER-MAX-ES50 replacement filter measures 10″ x 2.5″. The stage 5 post carbon filter has threaded fittings for ¼” connections.

Some of the reverse osmosis systems that are compatible with this replacement filter include ROES-50 systems, RO-585 system, TGI 525, and many others.

Multiple carbon blocks filtering

Carbon is known to have the capability of trapping chlorine which is the most prominent chemical present in water that has to be removed to make it suitable for drinking. The advantage of having multiple carbon blocks filtering instead of one Granular Activated Carbon (GAC) is to trap maximum chemicals and VOC’s through these carbon blocks. Tetrachloroethylene is removed by the three carbon filters.

Some Pluses of APEC Water Systems FILTER-MAX-ES50 Replacement Set

Efficient filtering mechanism with multiple carbon blocks and five filtering stages to eliminate the chemicals in the drinking water

Unlike GAC, carbon blocks are more efficient to absorb contaminants, and that technique is used here to increase filtering capacity.

Compatibility with most of the industry standard filter systems

Most reverse osmosis filter systems are compatible with the FILTER-MAX-ES50 Replacement Set.

Easy installation with instruction manual included in the purchase

A manual is included along with the delivered product that instructs the installation process. The process is simple and needs nothing more than some thread fittings. To be easily accessible it can be fitted under the basement instead of placing it under the sink.

Ability to protect the membrane and the reverse osmosis system and to increase its life

The filter system is designed in such a way that all the sediment and chemicals are filtered effectively helping the reverse osmosis system increase its life. The membrane is not damaged soon because of the five-stage filtering set up.

Long durability of the components and one year warranty

The components are durable and are made of high-quality and food grade polypropylene material. It can filter 3000 gallons of water.

Shortcomings of APEC Water Systems FILTER-MAX-ES50 Replacement Set

Incompatible sometimes

It is not compatible with some of the filter systems which are above 50 GPD and has a different size with thread connection such as Water General RO-585 system which is 75 GPD and has 3/8″ connection.

Some Prominent Features at a Glance

  • Thorough filter system with five-stage filtering
  • Ability to remove most undesirable chemicals such as chlorine, fluoride, nitrate, arsenic, lead, radium, chromium, and others
  • Long life of the filter set and membrane and reliable warranty coverage
  • Compatibility with most industry standard size reverse osmosis systems
  • Ability to protect and enhance the life of the reverse osmosis system in which it is placed

Should you Buy this Product?

If you are planning to improve your home and you wish to add an effective reverse osmosis filter system, you would need a replacement set too. APEC Water Systems FILTER-MAX-ES50 is a good value for money with its excellent features, quality, and reliability.

With the brand value of leading water system manufacturer based in the United States APEC Water Systems and good ratings in many online reviews, FILTER-MAX-ES50 can be trusted on its durability. All you need to have is a compatible set of reverse osmosis system, and this product proves to be one of the best for providing crystal clear water with great taste.

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