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As part of the Ultimate series, the APEC RO-90 Reverse Osmosis Drinking Water System is the company’s flagship providing about twice the amount of water that you get with a standard RO unit – great for large families!
This is mainly due to the high-output RO membrane rated at 90 gallons per day (at 60 psi).
Please note: These are only theoretical numbers. The system will NOT produce 90 gallons a day due to backpressure and other factors. However, it will supply more than enough water for drinking and cooking.
Of course, higher water output also means higher flow rates which is the main benefit, really, as it eliminates long waiting times.
APEC Ultimate RO-90
What does the filtration process look like and which impurities will be removed?
First, we have a polypropylene sediment pre-filter that traps dust, particles, rust and the like to protect the whole system and the membrane in particular from clogging.
Stage 2 and 3 are carbon block filters to reduce chlorine taste and odor, cloudiness and all kinds of chemicals. Removing the chlorine is also important as it would otherwise damage the delicate RO membrane.
Speaking of which, the membrane takes care of the following contaminants:
Last but not least, a carbon refining post-filter removes residual tastes and impurities that might have leached into the water while being stored in the tank.
This filtration process has earned the APEC Ultimate RO-90 a WQA Cold Seal certification according to NSF Standard 58 for guaranteed material and parts safety, structural integrity and contaminant rejection performance (TDS only).
The recovery rate a.k.a. filtered to wasted water ratio is 1:3 which is pretty standard (every home RO system will waste some water).
Min/max required water pressure: 40-85 psi
Max TDS: 2000 ppm
By the way, the APEC RO-90 is for tap and well water. The latter requires adequate disinfection, though.
Apart from the sophisticated 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 so it’s easy to find cheap aftermarket replacements if need be.
Above that, there are 2 upgraded versions of the APEC RO-90 for sale:
Did we mention that the system is backed by a 1-year limited manufacturer warranty (2 years with registration) for peace of mind?
The APEC Ultimate RO-90 – learn more on amazon.com
Installing the APEC RO-90 is like installing any other reverse osmosis under sink system: 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 1 or 2 hours.
For additional guidance you can refer to this 5-part video series:
With home reverse osmosis systems in general only very little maintenance is required. This also goes for the RO-90. All you need to do is remember to change filters according to schedule.
For stages 1, 2 and 3 that is once a year (if not changed in a timely manner the membrane might be damaged).
The membrane lasts for 3 to 5 years on city water and 2 to 3 years on well water.
The carbon post-filter is also good for 3-5 years.
The average annual replacement costs are A) reasonable and B) less than we had expected.
Only the optional remineralizing filter that needs to be replaced every 6-12 months seems a bit pricey.
We like the fact that APEC provides certified, knowledgeable support based in California. What we don’t like is that the support can be hard to reach, according to a handful of Amazon reviewers.
Also, some customers had issues with bad taste that might originate from the storage tank.
For a few others the system stopped working out of nowhere.
The APEC RO-90 saves you the time, money and inconvenience of buying bottled water.
Water quality is excellent and flow rates fast enough to provide plenty of pure H2O even at times of peak consumption.
Bottom line: The vast majority of users are happy with the product. 4.5 stars!
In our opinion, the APEC Ultimate RO-90 is best for people who want a reverse osmosis system with high water output.