This page may contain affiliate links. If you buy a product or service through such a link we earn a commission at no extra cost to you. Learn more.
Installing a 5-stage reverse osmosis system yourself is easier than you might think. Sure, it might take some time and patience, but armed with plenty of directions and YouTube tutorials, it can be done!
We have put together this handy installation guide for your 5-stage reverse osmosis system, with step-by-step instructions on installing and connecting each component to have you drinking pure water in no time!
Here is how to install a 5-stage reverse osmosis system:
So, how do you install a 5-stage reverse osmosis system?
Well, before we get started, it’s a good idea to note that installation may vary depending on your RO system model and your specific plumbing setup. The instructions given here are general guidelines, so please also check the instruction manual that comes with your particular system.
If your sink doesn’t already have an extra hole that you want to use (it might be covered by a chrome plate), you’ll need to drill a new hole in either the sink or countertop. Ensure there’s a flat area to place the faucet.
Depending on the material, you may need a special drill bit to prevent scratching or chipping. For a stainless steel sink, mark the spot using a center punch. Gently grind away enough surface material to accommodate the ¼” drill bit, then drill the hole. It’s advised to go extra slow, and a drop of oil can work wonders. If you need a ⅜” or ½” hole, start with a ¼” pilot hole.
Insert the faucet through the hole and secure it from the bottom. Then, attach the water line fitting and tighten it with a wrench.
To prevent clogging and to safeguard your RO system from contamination, position the saddle/adapter above and away from the dishwasher discharge and garbage disposal. Also, ensure it is at least 6 inches higher than the p-trap.
Create a ¼” opening in the top or side of the drain line—avoid drilling at the bottom. Affix the drain clamps securely using bolts, aligning the clamp hole with the pipe’s hole. Take care not to overtighten.
To maintain proper water pressure, position the water storage tank within a 10-foot distance from the drinking water faucet—fair warning: The filled tank can weigh over 25 pounds, depending on size.
Before installation, wrap several layers of Teflon tape around the threaded port at the top. Attach the tank valve or tank connector, ensuring a secure fit by hand-tightening. In many systems, the storage tank can also be horizontally placed without compromising filtration performance. This is incredibly convenient when space is limited.
To connect the module, use the handy color-coded tubing with quick-connect fittings. Ensure the tubes are pushed in as far as possible, and test the connection by gently attempting to pull it back.
To install the water lines for your RO system, follow these steps:
To install the various pre-filters, post-filters, and the RO membrane into their respective housings:
All these installation instructions may not make sense until you get to know the RO system’s components and their purpose.
This single plastic component connects the various elements of the RO system. These components include pre and post-filters, an RO faucet, and a storage tank.
The pre-filters of a 5-stage RO system usually consist of a sediment pre-filter, which primarily removes debris, and a carbon filter to eliminate chlorine and other chemicals. These pre-filters safeguard the sensitive reverse osmosis membrane from potential harm and fouling.
The reverse osmosis membrane is the primary water filtration component. Its principal function is to eliminate many contaminants that may have bypassed the pre-filters. By utilizing a semi-permeable membrane, the RO system works by applying pressure to separate impurities and dissolved solids from the water. The pure water moves through the membrane to the storage tank, while the impurities are left behind to be flushed away with the wastewater.
After leaving the storage tank, the RO-filtered water progresses through the post-filtration stages, in this case, a carbon post-filter and a remineralization filter. These eliminate any unpleasant tastes or odors lingering in the storage tank and add healthy minerals back into the water.
The pressurized tank stores the reverse osmosis water, guaranteeing a constant supply of filtered water whenever you need it.
RO systems come with a designated faucet for optimal flow rate and to ensure there is no cross-contamination with your regular tap water.
These components direct and carry the wastewater produced during filtration away from the unit for disposal. The wastewater contains all the impurities that reverse osmosis has filtered out of the water.
The valve acts as the link between your kitchen sink’s water supply and the RO system.
When the storage tank reaches its maximum capacity, the auto shut-off valve halts the water filtration system, only to resume once the water in the tank empties.
The function of this valve is to halt any backward flow of water towards the RO membrane, which may cause damage.
This controls water pressure against the reverse osmosis membrane, ensuring it is at optimal pressure to filter effectively.
Your system will have multiple tubes that connect all the components together.
Your system will have fittings and connectors that are usually color-coded so that they are easy to install.
If you have any questions about 5-stage RO system installation please don’t hesitate to leave a comment below!
Information provided on BOS is for educational purposes only. The products and services we review may not be right for your individual circumstances.
We adhere to strict editorial guidelines. Rest assured, the opinions expressed have not been provided, reviewed, or otherwise endorsed by our partners – they are unbiased, independent, and the author’s alone. Our licensed experts fact-check all content for accuracy. It is accurate as of the date posted and to the best of our knowledge.