VIOMI Vortex 8 PRO 800 GPD Tankless Under-Sink RO System

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Product guide

VIOMI Vortex 8 PRO 800 GPD Tankless Under-Sink RO System

The VIOMI Vortex 8 PRO is a tankless under-sink reverse osmosis system listed with 800 GPD capacity, app control and a smart LED faucet. It may suit kitchens needing filtered water at a dedicated faucet and a refrigerator or ice maker, but installation requires a nearby outlet and drilled faucet and drain openings.

At a glance

Listing claims 800 GPD capacity and 9-stage filtration, with a smart faucet display for TDS and filter life and app-based system information.
The manufacturer says it can feed a refrigerator or ice maker through a separate line. Standard tubing for that connection is not included.
Manufacturer-stated wastewater efficiency is a 3:1 pure-to-drain ratio.
The listed dimensions may help assess under-sink fit, but installation also needs plumbing connections and an electrical outlet.

Price

$399.98Save 17%

Reference price: ~~$479.99~~

Price checked: Nov 14, 2026

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Often bought together

VIOMI V8 PRO RO Replacement Filter for V8 PRO 800GPD Reverse Osmosis System | Advanced 0.0001μm RO Membrane Filtration, Reduces TDS / Lead / PFOA & PFOS, 2-Year Long Lifespan, Tool-free Installation

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Pros and cons

Pros

Tankless design and listed dimensions provide useful information for planning a compact under-sink installation.
A smart faucet is listed to show TDS and filter life, while app control is claimed for system information.
The manufacturer describes refrigerator and ice-maker line compatibility for buyers seeking filtered water beyond the main faucet.

Cons

Installation needs drilling for the faucet and drain, so it is not a no-plumbing setup.
The system requires corded power, and the listing says it needs a dedicated outlet rather than a switched garbage-disposer outlet.

Technical specifications

15 specifications

Identity
Brand	VIOMI
Model	Vortex 8 PRO

Filtration and capacity
Listed capacity	800 gallons
Purification method	Carbon Block, Reverse Osmosis
Filtration stages	9-Stage Filtration
Supported water TDS maximum	800

Power and installation
Power configuration	Corded Electric
Installation type	Under Sink
Container type	Tankless

Dimensions and installation
Dimensions listed	16.3"L x 5"W x 12.8"H
Weight listed	29 pounds

Filters and operating conditions
RO filter life	2 years
PCB filter life	1 year
Lower temperature range	41 °F
Upper temperature rating	100 °F

What to know before buying

Installation requires a standard outlet and drilled openings listed as 1"-1.5" for the faucet and 1/4" for the drain. Refrigerator or ice-maker connection tubing is not included, and faucet compatibility beyond the supplied faucet should be confirmed with customer care.
The listing gives filter-life claims of 2 years for the RO filter and 1 year for the PCB filter. Actual replacement timing may depend on use and water conditions.

What’s in the box

Included

PCB filter, 2
RO filter, 1
Gray LED faucet, 1
PE tubing, 1

Who is it for?

A good fit for

Households looking for a tankless under-sink RO system with app and smart-faucet monitoring.
Kitchens that can accommodate the listed dimensions, electrical connection and drilled faucet and drain openings.
Buyers who want to connect filtered water to a refrigerator or ice maker and can provide separate tubing.

Less suited to

Renters or buyers who cannot drill faucet and drain openings or make plumbing changes.
Installations without a suitable dedicated electrical outlet near the system.
Buyers who need a system that includes tubing for the refrigerator or ice-maker line.

VIOMI Vortex 8 PRO 800 GPD Tankless Under-Sink RO System · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.3 / 5 · 47 ratings

5 stars72%72%
4 stars10%10%
3 stars6%6%
2 stars0%0%
1 star12%12%

Customer feedback reports satisfaction with water quality and taste, and describes installation as quick and straightforward. This is encouraging for buyers who value drinking-water taste and a manageable DIY setup, but the system still requires drilling, plumbing connections and corded power. Aggregate ratings are generally positive, with a smaller low-star segment, so experiences are not uniformly favorable.

Positive themes

Customer feedback highlights water quality and taste.
Feedback describes installation as quick and straightforward.

Frequently asked questions

Does the VIOMI Vortex 8 PRO need a storage tank?

It is listed as tankless, so the supplied listing does not describe a storage tank.

Can it connect to a refrigerator or ice maker?

The manufacturer says it can supply a separate refrigerator or ice-maker line. The standard tubing for that connection is not included.

What installation work does it require?

The listing calls for a standard outlet and drilled openings for the faucet and drain. It also says the unit needs a dedicated outlet and cannot share a switched garbage-disposer outlet.

How often do the listed filters need replacement?

The listing states 2 years for the RO filter and 1 year for the PCB filter. These are manufacturer claims, not a guarantee of replacement timing in every home.