HV-RO1400-OD Tankless Reverse Osmosis System – 400 Gallon

(8 customer reviews)


MSRP $329 – Coupon Available at:

Available at Amazon

  • SUPERIOR PERFORMANCE – Reverse Osmosis System Technology physically separates water molecules from contaminants and flushes the rejected solids and dissolved solids, down the drain, leaving fresh, clean drinking water.
  • HIGH EFFICIENCY AND WATER SAVING – Produces 2 gallons of fresh clean water for every 3 gallons that enter the system. Impurities are removed with 1/3 of the water directed to drain
  • SATISFYING FLOW OF FRESH WATER – Real time production delivers newly produced ready fresh water straight from the dedicated faucet. 400 Gallons Per Day of clean water!
  • SPACE SAVING DESIGN – Many RO systems use bulky storage tanks, to store produced clean water. HYDROVOS Tankless ROs are “all-in-one”, no need for storage tanks!
  •  INNOVATIVE 2-FUNCTION PRE/POST FILTER – Unique design maximizes filtration capability while minimizing your expense. Single, dual function pre and post filter has separate chambers to protect the RO membrane AND provide a final polishing of the fresh, clean water.
  • EASY INSTALLATION – DIY friendly, all the parts are in the box
  • WATER PRESSURE – HYDROVOS HV-RO1400-OD is designed for household pressures. HYDROVOS recommends a pressure regulating valve be installed before the system, if household pressure exceeds 85 psi.


The Hydrovos Tankless Reverse Osmosis RO Water Filtration System brings fresh, clean water to your home. This space saving, award winning tankless design ensures maximum water filtration while taking up less room under the kitchen sink compared to traditional RO units. The filters remove sediment, dirt and other particles from the water. In addition, chlorine taste and odor is also removed, ensuring purer, better tasting water for you and your family. The compact, high performance RO filter and membrane will outlast most RO systems, ensuring fresh filtered water for 6 months. The Hydrovos HV-RO1400-OD RO system comes with every component needed to install the system with regular hand tools. Hydrovos HV-RO1400-OD is designed for household pressures. HYDROVOS recommends a pressure regulating valve be installed before the system, if household pressure exceeds 85 psi. For cold water use only, do not install on hot water line.

Manual HV-RO1400-OD Manual
Label HV-RO1400-OD Box

8 reviews for HV-RO1400-OD Tankless Reverse Osmosis System – 400 Gallon

  1. Stephanie xyz

    Great taste and easy to install

    Style: 400 GPD Verified Purchase
    I have been using this filtration system for a week now, I’m extremely pleased with the quality and taste of the water. The installation is easy, perfect designed to go under my kitchen sink. Great product.

  2. FE

    Two filters setting saves MONEY

    Style: 400 GPD Verified Purchase
    I bought this tankless RO system to replace my aging brondell RO system, which cost $79.99 to replace 3 filters every 6 months. In comparison, I think Hydrovos can save me more money in the long term because its pre post filter only costs $39.99 for every 6 months, but still performs the same functions as brondell’s 3 filters.

    I didn’t realize how compact is the Hydrovos’s system until I put it next to my brondell system. Hydrovos’s size fits well and saves cabinet space.

    Overall I’m very satisfied with my purchase.

  3. Alan

    Great tasting water

    Style: 400 GPDVine Customer Review
    I had to hire a plumber to do the installation because I needed a hole drilled into the granite countertop to install the faucet. It took the plumber 10 minutes and he was done. The unit is quality built and engineered, the filters are easy to replace (just like the fridge filter), and you have immediate access to great tasting water directly from the faucet. A great money and environment saver. Excellent value and a must have in every home.

  4. Bob

    Fantastic water filtration system!

    Style: 400 GPD Verified Purchase
    I love my new water filter system! The water tastes so much better, making drinking and cooking more enjoyable. It’s also super quiet, so I don’t get disturbed by any noise. The water flow is perfect and satisfying, making it easy to fill up bottles and pots. Overall, it’s been a great purchase, giving my tastier water, peace and quiet water flow

  5. Bogel

    Compact and great filter

    Style: 400 GPD Verified Purchase
    Just installed the Hydrovos tankless RO system. Great unit comes in compact size and straight forward installation, a video would help though. The unit is compact in size and looks better than my older system; the filter is also cheaper and las

  6. Coda

    Looking for better tasting water?
    Reviewed in the United States on June 9, 2023
    Style: 400 GPD Vine Customer Review
    Looking for better tasting water?
    Our city provided water tastes a bit funky in the Summer season. We use this tankless RO system to efficiently provide excellent tasting water with less wastewater production. We use the RO water in our coffee every morning. Additionally, since our 1 year old grandson visits I like that it reduces heavy metals, organic matter, and dissolved solids with a .0001 micron filter. The RO system includes everything needed for installation assuming you already have a counter hole and an electrical outlet. We’ve noticed significant less scale build up in our devices that need water: iron, coffee maker etc.

  7. Nicole

    Very nice compact (for an RO) system!

    Style: 400 GPD Vine Customer Review
    VERY nice RO system. Our previous system had 3 filters AND a tank that had to be stored under the sink. This is significantly more compact and the water tastes just as good. The faucet that came with the unit is really nice and sturdy as well. Our old faucet was fairly flimsy. Overall very nice unit and if you’re looking for something compact this would surely fit the bill.

  8. Raijin

    Great quality tankless reverse osmosis system!

    Style: 400 GPDVerified Purchase
    I originally had the old stage 3 stage reverse osmosis tank system; it did the job but took a lot of space under sink. When my sink rusted through which sparked a mini renovation, I decide to swap it out for a WATERDROP (TSU) tankless water filter. Sadly, the WATERDROP does not remove TDS, therefore the water did not taste as “pure”. Having spent a decent amount of money on the sink, WATERDROP and labor. I stuck with it for the better couple of years to now going back to a RO (tankless) system for better filtration and tasting water. I had originally wanted to go back to WATERDROP, however I found HYDROVOS with an almost 2:1 waste water ratio vs 1:1 of a comparable WATERDROP (and cheaper) I decide to give HYDROVOS a try.

    For the most part the unit seem fairly easy to install and pretty much “plug and use” if you have an ‘similar’ existing water filter system. However, since my existing WATERDROP is not a RO system I did not have a drain line that need to be tap into the sinks drain. Luckily the process is pretty straight forward and all the hardware are included. Also you will need an existing hole in your counter or sink to mount the included faucet/spigot.

    Though its not apple to apple comparing my existing WATERDROP TSU to the HYDROVOS RO1400. The HYDROVOS feels a lot better built, it has more weight and the unit feels solid whereas the WATERDROP is slightly ‘flimsy’. The HYDROVOS is also a tad bigger than the WATERDROP but it’s still space saving especially when compared to my original tank RO system.

    The one thing I really like from HYDROVOS is the much higher quality water faucet/spigot. It feels solidly made and larger than the WATERDROP. It also has an ‘aerator’ on the end which neither the WATERDROP or my old RO’s included spigot had.

    The filter cartridges are a lot larger than the WATERDROP and only require 2 vs 3. I did some calculation and there’s no real dollar saved with having one less filter in my case. But it sure means one less filter replacement throughout the year. A thoughtful after thought is that HYDROVOS included a scannable QR code on the filter which will come in handy when a replacement is needed!

    The only one minor ‘negative’ is the packaging seem a little lacking coming in a brown box. However that aside the product is package very securely and even thought it arrived a little banged up the ample packing material protected the unit very well.

    All in all, the HYDROVOS is a great RO system, it removes TDS and contaminant (as it should) its space saving, tankless and water saving with the 1.9:1 ratio. It’s a solid built unit + spigot while being easy to install with all the hardware included (minus power tools and elbow grease) if you have a fairly similar water filter like in my case. For what you get I recommend it!

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Benefits - Go Green with Hydrovos

Go Green

  • Reduce waste from plastic water bottles
  • Less carbon footprint, more sustainability
  • High efficiency saves water comparing with traditional RO systems with tanks
Kitchen Water needs with Hydrovos

Kitchen Needs

  • Better tasting water, coffee, tea
  • Ideal for cooking, baking and meals preparation
  • RO water has lower boiling points so food is cooked more quickly
Benefit of a Humidifier and Hydrovos RO System


  • Clean, fresh mist from your humidifier
  • Less build-up scale than tap water
  • More affordable than distilled water
Benefits of a Steamer with Hydrovos RO1600


  • Avoid stains and streaks on your clothes
  • More effective cleaning
  • Extend the life of your device by reducing impurities and dissolved salts


Hydrovos Reverse Osmosis System brings clean filtered water to your pets helping:

  • Body Temperature
  • Digestive System
  • Organ Function
APLUS_HV-RO1400-OD Under Sink
Smart Cleaning

Smart Cleaning Cycles

The 3-stages self-cleaning cycles help protect and extend the life of each filter:

  • Routine Cleaning : automatic flush for 30 seconds every
    24 hours. 
  • After-Use Clean: auto flushes 0.5 second after turning off
    RO faucet.
  • Startup Cleaning:  automatic flush 30 seconds every time when the RO system is plugged in.
Monitoring and Saving

Monitoring and Saving

This RO system will remind you to replace each filter through the LED light indicators by monitoring the usage time and water flow. Features an innovative 2-in-1 Pre/Post Filter design. Hydrovos does in one filter what other systems need two filters to do:

  • Save money by replacing only one filter when compared with other brands which need 2
Integrated Design

Integrated Panel Design

Hydrovos integrated-panel design helps this RO system not only produce clean fresh water, but also give you confidence in its performance.

• DIY & Easy to install

• Proprietary Integrated Panel design.

• Cutting-edge Innovation means higher efficiency and less waste compared with other brands.

Quiet Operation

Quiet Operation

Hydrovos tankless RO system works as quietly as an electric kettle. Enjoy your family time without interrupting your daily activities:

  • Quieter for sleeping children
  • Less interruptions while reading or studying
  • Easier to watch TV in the same room