Best Tankless RO Water Filter System

Best Tankless RO Water Filter System

RO water filter system is very effective for removing minerals and ions from your water. It can drastically improve the purity, taste and even the appearance of your drinking water. Reverse osmosis water is even better for cooking and higher quality than bottled water!

But what kind of reverse osmosis system should you choose for your home? When you combine the health benefits of reverse osmosis water with the efficiency of tankless filter systems, you can’t go wrong! So join us as we count down the 5 best tankless RO water filter systems!

Best

 APEC Water Systems ROES-50 Essence Series

 APEC Water Systems ROES-50 Essence Series Top Tier 5-Stage Certified Ultra Safe Reverse Osmosis Drinking Water Filter System

 Editors’ Choice: 4.8 out of 5.0 stars 

It’s a handful we know but this tankless reverse osmosis water filter system has a feed water pressure rating of 40-85 psi. When it comes to a reverse osmosis system that depends on water pressure, this is a great rating. 

It means your water will be all the purer. If that wasn’t enough, there are 5 levels of filtration in this system: a sediment filter, a carbon blocker, a secondary carbon blocker, a coconut carbon filter to refine the water and of course, an RO membrane. 

The installation is fairly simple although you may still want to call on a professional plumber for help. You get a 2-year warranty and the ability to enjoy great-tasting, purified water as soon as you turn on your faucet.

Pros
  • 5-stage filtration
  • Produces great-tasting water
  • Simple installation
Cons
  • Difficult finding replacement parts
2

 iSpring RCC7AK

 iSpring RCC7AK

 Editors’ Choice: 4.8 out of 5.0 stars 

The iSpring RCC7AK tankless reverse osmosis drinking water system can remove many harmful contaminants such as chlorine, lead, arsenic, asbestos, sodium and fluoride. This model is actually very similar to our first tankless RO system but it features one additional stage of filtration. 

This tankless reverse osmosis water filter has a 6th and final filtration level which restores healthy minerals to the water and balances the natural alkalinity. You have probably heard of alkaline water or have seen it on sale at the store. 

With this tankless RO filtering system, you can have delicious and healthy alkaline water whenever you want. While this system is a bit more expensive than the first filter on our list, it may be worth it for that added purification stage. 

Pros
  • 6-stage filtration
  • Great-looking water
  • 1-year warranty
Cons
  • A bit pricey
3

Express Water RO5DX Reverse Osmosis Filtration

Express Water RO5DX Reverse Osmosis Filtration

 Editors’ Choice: 4.7 out of 5.0 stars 

Next on our list is an under the sink reverse osmosis water filtration system with some pretty unique and convenient features. There are different cartridges that are used in this filtration system and each one can detect a leak. 

If a leak occurs, the system will stop the flow of water so you know when something is going on. This is also a customizable water filtration system. You can get new filter cartridges and ones that offer certain kinds of purification like alkaline water filters, UV filters, deionization and more. 

While this filter system is touted as one that you can install on your own, it may still be best to call out a plumber. However, it is very nice that you can mix and match different types of filtration. This is also a very affordable system at just around $170.

Pros
  • It’s affordable
  • Custom filtration
  • Includes faucet
Cons
  • Leaking issues
4

 Waterdrop G3 Reverse Osmosis System

 Waterdrop G3 Reverse Osmosis System

 Editors’ Choice: 4.7 out of 5.0 stars 

This water drop tankless reverse osmosis offers great protection for you and your family as it has 7 layers of filtration. It is rated to remove all kinds of contaminants from your drinking water including lead, sodium, scale, fluoride, PFA’s, and heavy metals like chromium. 

There is even a filter to ensure the good taste of your water in the form of a carbon filter made from coconut shells. This is a compact tankless system that should fit under even a cluttered sink. The system comes with it’s own dedicated faucet as well. 

Installation is definitely a bit tricky so be prepared to hire a professional. You are going to pay a pretty penny for this system as well because it costs about $500. Still, it produces an incredibly refreshing and pure glass of water every time. 

Pros
  • Advanced filtration
  • Compact design
  • Good customer service
Cons
  • Water is undrinkable during flushing
5

NSF Certification Lead-Free Water Filtration Reverse Osmosis Faucet

NSF Certification Lead-Free Water Filtration Reverse Osmosis Faucet

 Editors’ Choice: 4.6 out of 5.0 stars 

If you are looking to save the most space in your kitchen, the NSF Certification Lead-Free Water Filtration Reverse Osmosis Faucet may be perfect for you. You can hook this faucet directly to your existing reverse osmosis filter to purify your water automatically. 

While it lacks the multi-stage filtration and advanced functions that some of the other systems on our list have, it is a very affordable alternative at just around $40. Plus, it doesn’t take up a bunch of room. Installation is simple too. 

Keep in mind though that this is simply a faucet that is compatible with a wide variety of reverse osmosis filter brands such as APEC and Express Water. You can also choose from finishes like rubbed bronze, brushed nickel and polished chrome.

Pros
  • Different finishes available
  • Affordable faucet
  • NSF certified
Cons
  • Not a complete kit

Tankless RO Water Filter System Buying Guide

Healthy drinking water isn’t something you should take a chance on. To get the best tankless RO water filter system, be sure to look for these features:

Multi-Stage Filtration

The best RO water filter systems will have multi-stage filtration capabilities. We recommend choosing a system that has at least a 5-stage filtration capability. 

Strong Water Pressure

Reverse osmosis depends on pressurized water as it needs to be pushed through a filtering membrane. So make sure that any system you are considering can generate psi of at least 40. 

Warranty and Replacement Parts

It’s best to choose a model that offers a warranty of at least a year. You should also check to see if the manufacturer readily offers replacement parts and filters. 

Frequently Asked Questions

Q: Is tankless RO better?

A: One of the main benefits of a tankless reverse osmosis water filter system is that you can save a lot of space under your sink. They can also perform more efficiently and help you save water.

Q: How much does a tankless reverse osmosis system cost?

A: You can get a countertop type system for anywhere between $300 and $500. Under the sink tankless systems can cost anywhere from $150 to $500. Whole home systems can be as expensive as $10,000!

Q: Are reverse osmosis systems worth it?

A: As a whole-house filter, maybe not because hole-house systems use up a lot of water. But for drinking and cooking water use only, they are certainly worth it.

Parting Words

Tankless RO filter systems can help you drink healthier, more nourishing water and won’t eat up a lot of space. It’s a win-win situation. But you still have to choose the right model. Be sure to check out the products on our list of the best tankless RO water filter systems to find the one perfect for your home!

Also checkout – Best Gravity Water Filter System

OrbReviews Editorial Team

The OrbReviews Editorial Team (OET) is made out of experts in the product research and engaging content creation space. In addition, OET is passionate about researching kitchen related products and sharing the learning with our readers.