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APEC RO-90 Reverse Osmosis System Review

The APEC RO-90 is commonly considered to be the best reverse osmosis kit for home use. Among APEC’s under-sink RO systems, it is one of their most well-known filtration systems. With an exceptional reputation and thousands of positive reviews from users. Reading this review, I am sure you will realize why it has gained such popularity.

As the industry leader in osmosis water systems, APEC offers a wide variety of water filtration solutions from small to large units. Following the introduction of the APEC ROES-50, they added the APEC RO-90 to their product line. It was designed for customers who regularly need a larger amount of filtered water every day.

APEC RO-90 Reverse Osmosis System Review

Read our entire APEC RO-90 Review so you can determine if it is right for you or not. This review will guide you through all of the information you need to know before choosing to buy the APEC RO-90 Reverse Osmosis System.

APEC RO-90 Review


APEC Water Systems RO-90

APEC Water Systems RO-90

Ultimate Series Top Tier Supreme Certified High Output 90 GPD Ultra Safe Reverse Osmosis Drinking Water Filter System, Chrome Faucet

  • water purifier that has been tested and certified by WQA to remove up to 99% of contaminants including arsenic, chlorine, lead, fluoride, heavy metals, virus and 1000+ contaminants.
  • It has a large super capacity filter that delivers 2X contaminant removing capacity for fewer filter changes compared with smaller all-in-one filters that clog up quickly.

The RO-90 system is designed to produce ultra-fresh, clean water right at home. Save money and time from buying costly bottled water. If you didn’t already guess the numbers refer to the gallons produced,  50 gallons and 90 gallons a day. So, if you have read the APEC ROES-50 review and were impressed but thought you needed a filter that could give you higher volumes of water then the APEC RO-90 is the system for you. 

The APEC-90 RO system is the big brother of the ROES-50 providing almost twice the amount of water per day. This reverse osmosis system will easily filter and produce 90 gallons of filtered water per day. While ROES-50 has a capacity of 50 gallons per day.

The RO-90 produces the most water of any under-sink system we looked at. You will be sure to have an abundance of filtered water whenever you need it if you decide to go with the RO-90.

This under-counter osmosis system is not the most efficient system, it wastes 3 gallons to produce a gallon of purified water, which is about average. It uses a 5-stage filtration system to remove all harmful contaminants.

For the Setup, you just need some basic DIY skills and a little patience, when you buy the APEC RO-90 RO system it comes with everything you need to install it.

Water Production

The stated water output is 90 gallons per day may differ from one household to another. Water production depends mostly on water pressure and to some extent water temperature. With the normal municipal water pressure, APEC RO-90 produces 75 gallons a day. While at a pressure of 60 psi, it will reach its maximum level of water production of 90 Gallons per day.

Water Production

Water Efficienc

Like many other reverse osmosis filters, like the APEC ROES-PH75 this under-counter water filter also wastes around 3 gallons of water to produce a single gallon of purified water.

This wastage of water is associated with every Ro-system. You can’t have a gallon of purified water without that wastage. If you want to you can set the system up to use the waster water and utilize it in the garden or in any other cleaning task.

Filtration System

APEC RO-90 filtration process is exceptionally good, it can remove 99% of contaminants from the incoming water. It has 5 stages of filtration whereas some other systems have up to 11 but still, the performance of this system is remarkable. Did you know that many of the additional stages in other filters are surplus to needs for most regular households?

Most people think that more filtration stages mean more purified water, but it is not the case at all. This is why you should not judge a reverse osmosis filter by the number of stages. What you should consider is do you need additional stages such as UV filtration, the effectiveness of each filter stage.

And most importantly you should be thinking about the quality of components are factors to consider before considering the number of filtration stages.

But, the APEC RO-90 RO system is designed by considering all these factors and even compared to units with many more filtration stages it is more efficient and effective. Because the filters are of high quality and NSF certified you know they are top quality too.

Filtration System

Ongoing Costs

The initial purchase price is only a small component of the cost of RO filtration at home. So, you should consider maintenance cost as the more important factor. Because APEC knows RO understands its customers better than anyone else they have made the APEC RO-90 filters to be long-lasting. And the longer lifespan of filters reduces your maintenance cost.

Most reverse osmosis water filters are replaced every six months or so depending on the amount of use. But APEC RO-90 Pre-Filters last considerably longer, they should be replaced after 12 months if the system is regularly in use. The post-filters and RO membrane are required to be replaced after 3-4 years.

Inside the BoxSpecifications
  • Pre-filters
  • Storage tank
  • RO Membrane
  • Faucet
  • Instructions Manual
  • Feed water adapter
  • Drain saddle
  • Color tubing
  • Tank’s ball valve
  • Wrench
  • System capacity: 90 GPD @ 60 psi, 75 GPD @ 50 psi
  • Tank size: 4 gallons
  • Tank dimension: 11†x 11†x 15â€
  • Feed water pressure: 40-85 psi
  • Feed water temperature: 40- 100 deg F
  • Max TDS: 2000 ppm
  • System dimension: 16â€w x 5.25â€d x 17.5â€h
  • System package weight: 25 pounds


Its design allows you to install it in the cabinet under your kitchen sink. Although you can easily install at any place where the water feed line is available.

As far as Ro System installation processes go, it is not complicated. Anyone with some basic DIY skills can install it. The step-by-step guide makes the installation process easier. The instructions manual is concise and well written. But if you are still facing a problem, customer support service is also available to help you during installation.

Video Learning Resources

Pros & Cons


  • Five stage filtration process that produces the best water quality
  • Low maintenance cost
  • Produce 90 Gallon per day
  • Noiseless operations
  • Upgradeable system
  • Easy to setup
  • RO Membrane life of between 2 to 3 years.
  • 4-gallon pre-pressurized water storage tank
  • Long lasting filters


  • Filters in housing are difficult to replace than modular filters

Final Thoughts

There are several options of reverse osmosis filter available in this price range, but the APEC RO-90 is one of the best options for larger families and workplaces. All of the features of the APEC RO-90 are premium quality and technology, which set it apart from the competition. APEC developed its products while keeping its customers’ needs in mind.

If your water pressure is lower than 50 psi it will not work efficiently in this situation we suggest a pressure booster or permeate pump to enable the filter to work effectively.

APEC backs up the RO-90 model with a 1-year warranty. If it causes any problem you can replace it. But after getting feedback from existing owners, we’re sure you will never have to worry about replacing it under warranty.

The automatic shut-off valve and the compact metal stand are appealing features of the APEC RO-90 Reverse Osmosis System.

We recommend it because of its low maintenance cost, higher water production, and efficiency. Healthy drinking water leads to a happier life. After having this RO water filter you will definitely enjoy its services.

Other Frequently Asked Questions

What Does the Filtration Process Look Like and Which Impurities Will Be Removed?

APEC RO-90 uses 5 separate stages of filtration:

  1. Sediment filter – removed dust and dirt.
  2. Carbon Filter – Removed VOC’s, Chlorine, other chemicals, and smells.
  3. Second Carbon filter – Further removes odors.
  4. RO Membrane – Removes 99% of contaminants including heavy metals and Arsenic.
  5. Coconut Fibre Carbon Filter – Improves taste and eliminates all odor.

Which Impurities Will Be Removed?

Almost all impurities are removed by the RO-90. APEC guarantees that it can remove 99% of all toxins, including chlorine, taste, and odor, as well as radioactive contaminants such as radium 226 and 228, fluoride, arsenic, lead, chromium, and more.

How Big Is the RO Storage Tank?

The total size of the tank is eleven inches wide, eleven inches deep, and 15 inches high – 11″w x 11″d x 15″h

How Much Does the Tank Hold?

The Tank is a total of 4 gallons, but that is the total volume including the bladder and other internal components. An APEC RO-90 tank holds approximately 3.2 gallons

How Long Does It Take for the Apec RO-90 to Fill Its Tank?

The APEC RO-90 fills at a rate of about 3-4 Gallons per hour, so the tank should be filled in a little over an hour

Does It Live up to the Apec Name?

Yes, the APEC RO-90 definitely keeps to the high standards expected from the APEC brand.

What Are the Options to Upgrade?

The APEC RO-90 comes with a standard 1/4 inch connection, but you can upgrade it to a 3/4 inch pipe to increase the flow rate.

We have covered every aspect of this product that you must know, Do share it with your friends too if you have found it useful. 

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One Comment

  1. Your method of describing the whole thing in this post is
    in fact nice, all be capable of simply know it,
    Thanks a lot.

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