The APEC Essence ROES-50 is a 5-stage reverse osmosis filtration system that can provide your home with 50 gallons of water per day. It is our #2 choice for a budget reverse osmosis system.

We like it for more than the great price though. We particularly like that this unit is assembled in the United States. The components are not made in America, but American assembly is good enough for us and ensures some quality. Plus, this unit has an excellent 1-year warranty and lifetime phone support if any issues arise.

This article will cover the filtration, efficiency, warranty, installation, and maintenance.


Obviously, the capability of the filter is the most important part of choosing a filter. Fortunately, the ROES-50 meets the high industry standard with a 5-stage filtration that removes over 1000 different contaminants found in tap water.

ro stages

Sediment Filter: The standard sediment filter that removes large sediment such as rust, dust, and dirt. This stuff can easily clog the filter.

Carbon Block Filter (x2): These stages remove chlorine, odors, colors, and a variety of different chemicals.

RO Membrane: This steps removes the vast majority of the contaminants found in water. Nasty stuff like arsenic, fluoride, lead, cyanide (!), chlorine, bacteria, and protozoan.

Coconut Carbon Filter: Removes the <1% of contaminants that are still in the water after the intense purification process.

Note: For maximum efficiency do not use this with hot water. Anything over 80 degrees is probably too hot. Fortunately, the hottest tap water in the United States is probably around 70 degrees.

As you can see, the five stages are plenty to remove most of the contaminants found in your water. If you want even more purification, then you can install an inline UV water filter after the 5th stage. This will kill off any additional bacteria that floated through the system. Honestly, this isn’t really necessary as reverse osmosis removes >99% of all bacteria, protozoa, and viruses, but it’s nice to have the peace of mind.


1 year manufacturer warranty. Make sure to register the filter for the warranty.


tools on a work bench

Easy to install. You will need some tools that include the following:

  • Variable speed drill
  • ¼” and ½” drill bits. A 1/8” drill bit it also nice to use for drilling the pilot hole, but not entirely necessary.
  • Philips screwdriver.
  • Cutting device (knife or scissors)
  • Teflon tape
  • Adjustable wrench or pliers. Alternatively, you can use a 5/8” and 9/16” wrench.

The system ships out with two filter wrenches, so you don’t have to worry about that.

Make sure you install this indoors. Sunlight will cause sun rot and lead to cracked plastic.

The instruction manual that comes with filter is very clear and easy to understand unlike other units.

There are plenty of available YouTube videos if you prefer following a video.


The only maintenance necessary is to change out the filter and replace the O-rings when they leak.

The stage 1, 2, 3 filters can be replaced every 6-12 months. Exact time will vary based on the quality of your tap water. Replace the filter when you notice the water pressure dropping. Replacement filters are not too expensive and can be found on Amazon. However, the price frequently changes so double check before purchase.

apec roes replacement filter

Note: The sediment filter does not have a clear housing like some of the competitors. This is because clear plastic is much more susceptible to cracking over time. It’s easy to check and safer for your home to have stronger plastic.

You should replace the RO membrane and post-filter carbon every 2-3 years. If on well water, then replace every 2 years. Again, this depends on the quality of your water and the frequency that you change the other filters. Tap water that is high in chlorine has a tendency to quickly destroy reverse osmosis membranes.

Replace the O-rings when you notice them starting to leak. Don’t make the mistake of accidentally throwing out the O-rings when you change out the filter. Trust me, this happens much more frequently than you would think. Those things are super easy to lose.



  • Assembled in America.
  • Provides 50 gallons of clean water per day.
  • Long filter life.
  • Removes 1000+ contaminants.


  • Warranty shorter than we like.