Written by: Alexandra Uta // Expert Fact-Checking: Buddhini Dolapihilla, MBSS // Last Updated: Jan 10, 2024
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As part of the Ultimate Series, the APEC RO-90 Reverse Osmosis System is one of the company’s flagships providing relatively fast filtration and enough water for large families. This plus the 4-gallon storage tank eliminates waiting times – all for an affordable price.
But there is more to the APEC RO-90 that’s important to know – both good and bad things. We’ll discuss everything in our review below!
First of all, what does the filtration process look like and which impurities will be removed? Well, we have 5 filter stages which is typical for under sink reverse osmosis systems:
All in all, you can expect powerful filtration from the APEC RO-90 system for clean and healthy drinking water. By the way, this has also been NSF Standard 58-certified by the WQA. In other words, the reverse osmosis system is guaranteed to be effective (more on this below).
The recovery rate a.k.a. filtered-to-wasted-water ratio is about 1:3 which is pretty standard.
By the way, the APEC RO-90 is for tap and well water. The latter requires adequate disinfection, though.
Finally, we have a large 4-gallon storage tank so you should never run out of filtered water.
Probably the most important advantage of the APEC Water Systems RO-90 is the relatively affordable price.
And apart from the solid filtration process, we like that filters are Made in USA and long-lasting (about 12 months) which reduces maintenance requirements. What’s more, the filters are standard-sized (10 inches) so it’s easy to find cheap aftermarket replacements if need be.
Speaking of filters, annual replacement cost amount to somewhere between $70 and $80 which is pretty cheap already. Plus, changing filters is not overly difficult and the same can be said about system installation.
Above that, there are 2 upgraded versions of the APEC RO-90 for sale:
Did we mention that the APEC RO-90 Ultimate Series Reverse Osmosis System is backed by a 1-year limited manufacturer warranty?
Thanks to the 5-stage filtration process, you get a good range of contaminant removal. Some of the addressed contaminants include:
The APEC RO-90 Ultimate Series – learn more on Amazon.com
Installing the APEC RO-90 is like installing most other under sink reverse osmosis systems: You need to drill a hole in your kitchen sink or countertop for the dispenser in case there is none, install the drain saddle, and assemble the unit itself with all its connections.
The good news is that the system comes with clear step-by-step instructions including pictures.
If you are at least a little handy with tools you should be able to pull this off in a few hours.
Tools you’ll need:
To set everything up, follow these steps:
For additional guidance you can refer to this 5-part video series:
With home reverse osmosis systems in general, only little maintenance is required. This also goes for the APEC RO-90. All you need to do is remember to change filters according to schedule which is not overly complicated, and occasionally clean/disinfect the system and check storage tank pressure.
Here is how long each filter stage lasts:
As mentioned before, average annual replacement costs of $70-80 are A) very affordable and B) less than we had expected.
To change the pre-filters:
To replace the reverse osmosis membrane:
To replace the carbon post-filter:
Here is a link to the official manual:
https://www.freedrinkingwater.com/manual/ro/RO-90-Manual.pdf
The APEC RO 90 has one important NSF certification:
We couldn’t find any earlier product versions.
We couldn’t find specific contaminant reduction rates. This is not so much of a problem because we have a certification against NSF standard 58, but for comparability it would have been nice to have specific rates. Also the certified contaminants are a great start but they’re limited in regards to their type. They’re basically all ions, and certification for some organic chemicals would have been nice.
A few more cons:
The APEC RO-90 Ultimate Series Reverse Osmosis System combines affordability with NSF-backed contaminant reduction. But this is one of the older-style under sink RO systems that lack features such as a pressure pump for faster filtration and reduced wastewater. All in all, we award 4 stars.
There are other options available on the market if the APEC RO-90 doesn’t fit your needs. Two of our top choices are the Waterdrop G3 and the AquaTru.
Waterdrop G3 |
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Price: | $$$ |
Filter Stages: | 4 |
Flow Rate: | 0.42 gpm |
NSF: | 58, 372 |
Annually: | ~$145 |
Overall Rating: 4.0/5.0 ⓘRating based on filtration performance, filter life, price and yearly cost, NSF testing/certification, customer support, product warranty, our testing/experience, user feedback, and other factors.
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AquaTru |
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Price: | $$$ |
Filter Stages: | 4 |
Water: | 1 Gallon in 10-15 Minutes |
NSF: | 42, 53, 58, 401, P473 |
Annually: | ~$100-120 |
Overall Rating: 4.5/5.0 ⓘRating based on filtration performance, filter life, price and yearly cost, NSF testing/certification, customer support, product warranty, our testing/experience, user feedback, and other factors.
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The Waterdrop G3 is a tankless under sink reverse osmosis system (click to read the full review). It filters water on-demand and has no storage, making it quite sleek compared to a tank-based system like the APEC. The Waterdrop G3 comes with 4 filtration stages, performance backed by solid NSF testing (Standards 42, 53, 58, 401) and one certification (standard 58 for TDS reduction). Waterdrop provides these contaminant reduction rates:
The system also utilizes an internal pump boosting water pressure, and can achieve a flow rate of 0.42 gallons per minute – much faster than the APEC and more than enough for the average household, as it allows you to fill 1 cup of water in about 8 seconds. In addition, only 33% of the input water is wasted (compared to 75% with the APEC). Installing the system is simple and straightforward.
You also get the benefit of a smart faucet, which lets you know when it’s time to replace your filters with visual and sound clues. The filters themselves last for between 550 and 2200 gallons, which comes down to 6-24 months, and replacing them is pretty easy. You can even do it without shutting off the water first, and without using any tools!
You’re able to see the current TDS level of your water with the help of a built-in monitor. The system is made of BPA-free materials, and is backed by a money-back satisfaction guarantee for the first 30 days. You also get a 1-year warranty on top of that – but keep in mind that it’s only valid when used with municipal water.
The only real downsides are that the Waterdrop G3 can occasionally produce annoying noises, and it costs quite a bit more than the APEC, both initially and in annual maintenance, which comes down to around $145 per year.
The AquaTru is hands down our favorite reverse osmosis system. It’s a countertop unit designed to be very easy to set up and use, requiring practically no installation. The system is tested and certified against various NSF standards for more than 80 contaminants. You get certificates for NSF/ANSI standards 42, 53, 58, 401, and P473, which is quite impressive compared to other systems, including the APEC. The contaminants targeted include:
What’s more, the AquaTru takes up very little space, and as we said above, requires almost no initial setup before it’s ready to use. It also filters quite fast compared to other reverse osmosis systems, and only wastes around 20% of the input water – again thanks to a built-in pump. The whole system is made with BPA and BPS-free Tritan plastic. Unfortunately, some users report occasional leaks, as well as units breaking down prematurely. Those appear to be rare incidents though. The only other downside we can point out is that the AquaTru costs more than the APEC upfront, and is also slightly more expensive in terms of annual maintenance which costs around $100-120.
If you have to choose between the three, we recommend going with the AquaTru due to its great balance of price, maintenance cost, NSF certifications, ease of installation, fast filtration, and low wastewater. The Waterdrop G3 comes in second, and we especially appreciate its tankless design and fast operation. The APEC RO-90 is only really recommended if you’re on a limited budget. Its NSF certification is good, but keep in mind that it doesn’t come with advanced features like a pump, resulting in issues like a lot of wastewater and slow operation. It also takes more time to install the system, and its contaminant reduction rates are not as clear.
This completes our review of the APEC RO-90 Ultimate Series Reverse Osmosis System. If you have any questions please don’t hesitate to leave a comment below!
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