Skip to product information
1 of 10

4 Stage Tankless RO System with Smart Faucet

4 Stage Tankless RO System with Smart Faucet

The Mist Tankless Reverse Osmosis System is a highly efficient 4 stage filtration, dual filter, compact under sink system with a stainless steel smart faucet.

  • This system is certified by IAPMO R&T against NSF/ANSI 58 for material safety, structural integrity and TDS reduction, NSF/ANSI 372 standard for lead free compliance.
  • Filters up to 600 GPD.
  • The included smart display stainless steel faucet will indicate the value TDS reduced (value measured in mg/l), when the filter is being used, and a filter replacement warning.
  • Product size: 17.1”x5.4”x15.9”
  • See FAQs below for more info
Regular price $299.00 USD
Regular price Sale price $299.00 USD
Sale Sold out
View full details

Collapsible content

How many stages is this system?

This Mist RO System has a total of 4 filtration stages.
The water filtration accuracy is 0.0001um.

What is included?

The Mist Tankless RO Under Sink System, Stainless Steel Smart Faucet with Chrome Finish, Mist PCT Filter (MPF1) and Mist Reverse Osmosis Filter (MRF3) are preinstalled, owner’s manual with clear instructions, and any accessories needed for installation.
This RO system includes a stainless-steel smart faucet. The smart faucet display will show the true value of TDS is being reduced, working status and will remind you when the filters need to be replaced.

Is this system certified?

Yes, this system (MRO003) is tested and certified by IAPMO R&T against NSF/ANSI 58 for material safety, structural integrity and TDS reduction, NSF/ANSI 372 standard for lead free compliance.

What does this system filter?

This system uses a dual filter design with a PCT composite and multiple reverse osmosis membrane filters (MPF1 and MRF3) to optimize the filtration to ensure the purest water.

The PCT composite (MPF1) filter is a 3-1 function filter that removes sediments, rust, large particles, colloids, chlorine, fluoride, and scale to improve the taste and odor of drinking water.

The Multiple Reverse Osmosis (MRF3) filter reduces TDS (Total Dissolved Solids) by more than 93% and effectively reduces bacteria and metal without removing beneficial minerals from tap water.

What are the benefits of using a smart faucet display?

The included smart display stainless steel faucet will indicate the value TDS reduced (value measured in mg/l) in real time, when the filter is being used, and a filter replacement warning.

The RO smart faucet has two dispensing modes based on your needs to help optimize the filter use and life:
The purified mode is best for drinking and uses both the PCT and RO filters resulting in the purest water, the faucet will show the TDS value in this mode.

The filtered mode will only use the PCT filter for other uses besides drinking water, like cooking and washing vegetables.

How often do I need to replace my filters to my tankless reverse osmosis system?

The dual filter design and faucet modes will ensure your filter life is prolonged and optimized.
MPF1 Filter life is 8-12 months or 1600 gallons.
The MRF3 filter life is 12-24 months or 1300 gallons whichever comes first
The filter life may vary depending on the quality and conditions of your tap water.

Additional replacement filters are sold separately.

Do reverse osmosis systems remove bacteria?

This system effectively reduces TDS, heavy metals, and bacteria by 93% without removing the beneficial minerals in tap water.

What is TDS?

These solids primarily include inorganic substances such as calcium, magnesium, potassium, chlorides, and sulfates but may include small amounts of organic contaminants as well. A high concentration of TDS in drinking water can adversely affect the taste, odor, and appearance of the water. Moreover, a high concentration of TDS can be an indicator that harmful contaminants such as iron, manganese, sulfate, bromide, and arsenic may also be present in the water.

Does this RO system require electricity?

Yes, this system requires an under-sink electrical outlet.

Can I install my tankless reverse osmosis system by myself?

Yes, this system can be installed by anyone and should take about 30 minutes to complete.

Tools needed for installation.

A faucet hole is required, if there is no preexisting hole one will need to be drilled prior to installation (placement sticker and instructions are included).

How do I know if my RO system is working?

The system’s light indicator display will indicate if the system is on and working, filtering water, in the flushing state, and remind you in advance to replace the specified filter cartridge.

The benefits of a tankless reverse osmosis system vs traditional systems with a storage tank:

Tankless RO systems have several benefits compared to traditional RO systems. They are compact, take up less space, produce water on demand, resulting in fresher water and a lower risk of bacterial growth and secondary contamination, waste less water, and do not require a storage tank.

Where does my reverse osmosis system install? Does it take up a lot of space?

This system installs under your sink in an upright position. The tankless compact design allows you to save 70% of your under-sink storage space compared to traditional RO systems making them an ideal choice for homes with limited space.
Our System Size: 17.1” x 5.4” x 15.9”

Are reverse osmosis systems wasteful?

Tankless RO systems are less wasteful than traditional systems which produce more wastewater to pure water when filtering and storing it in the tank. With the Mist system, you will gain access to pure drinking water on demand with our 2:1 pure-to-drain ratio less wastewater per cup of purified water. Each gallon of purified water produces 2 gallons of wastewater compared to the average system with a 4:1 drain ratio.

Will a reverse osmosis system decrease my flow rate? Or does it filter water from a different waterspout?

The filtered water will not affect your regular faucet flow rate.
The system produces clean pure water on demand through the provided faucet and can filter up to 600 gallons per day.
The system flow rate is .417 GPM, it may vary based on the quality of your water.

Are tankless reverse osmosis systems hard to maintain?

No, our tankless RO system requires little to almost no maintenance. Tankless RO systems are easier to maintain compared to traditional systems because they don’t have a storage tank that requires periodic sanitizing and cleaning. The only task is replacing the filters which take about 2-3 seconds.

What is the life expectancy of a reverse osmosis system? And is it worth the cost?

With proper maintenance, a reverse osmosis (RO) system can last up to 10-15 years, providing you with clean and safe drinking water throughout its lifespan. Maintaining the system and changing the filters regularly is essential to ensure that it performs at its best.

In comparison, tankless RO systems are much simpler to maintain and require very little upkeep. Additionally, they can produce fresher water. Although they may be a more significant investment initially, they can pay off in the long run with minimal maintenance costs.

Do tankless reverse osmosis systems produce alkaline water?

No, our system does not produce alkaline water.

Do tankless reverse osmosis systems work?

Yes, tankless RO systems do work, and they effectively remove a wide range of contaminants from drinking water, including bacteria, dissolved solids, minerals, chemicals, and microorganisms.

Are tankless RO systems loud and noisy?

No, this system has an integrated design that ensures the system runs quietly and efficiently throughout the day.

Do tankless RO systems automatically flush?

Yes, our system automatically flushes for 18s after 30 minutes of accumulated use.

Is this a whole-house reverse osmosis system?

No, this is a POU under-sink filtration system.

Do reverse osmosis systems work for well water?

We don’t recommend using well water as a source due to its complicated composition. If you are using well water before installing the system, ensure that the feed water has passed through a prefiltration system otherwise large particles may clog the filter and shorten the filter life.

What should I do if I have any issues with my RO system?

Contact our customer service team at

Whirlpool Maytag ...

LG LT1000P, LT100...

LG LT120F Kenmore...

Whirlpool W103115...

to our