ECHO RO™ Tankless Reverse Osmosis Water Filter | 4-Stage RO

Advanced four-stage filtration. Fresh water on demand. No storage tank required.

The ECHO RO™ Tankless Reverse Osmosis Water Filter brings powerful drinking-water filtration into a remarkably compact design.

At just 4.25 inches deep, the system fits neatly beneath the sink without the bulky storage tank traditionally associated with reverse osmosis systems. Instead, water is filtered on demand and delivered directly to a dedicated drinking-water faucet.

Four stages of filtration—including a high-performance 0.0001-micron reverse osmosis membrane—work together to reduce a broad range of contaminants while improving the taste and quality of drinking water.

With a 1:1 pure-water-to-drain ratio, convenient twist-in replacement cartridges, and no storage tank or pressure bladder, the ECHO RO offers a streamlined approach to reverse osmosis filtration.

Tankless by Design

Reverse osmosis—without sacrificing your cabinet.

Traditional reverse osmosis systems typically rely on a pressurized storage tank to hold filtered water until it's needed.

The ECHO RO eliminates the storage tank altogether.

Instead, drinking water is purified when you turn on the dedicated faucet, helping preserve valuable under-sink storage space while eliminating the need to keep purified water sitting in a storage tank.

Its slim 4.25-inch-deep profile makes advanced filtration possible without allowing the filtration system to take over the cabinet.

Four-Stage Reverse Osmosis Filtration

Each stage has a job.

Water moves sequentially through four filtration stages, with each stage preparing the water for the next level of filtration.

Stage 1 — Sediment Filter
Recommended replacement: 6–12 months

The first stage captures rust, silt, sediment, and other particulates, helping protect the more advanced filtration media downstream.

Stage 2 — Carbon Block Filter
Recommended replacement: 6–12 months

Carbon filtration helps reduce chlorine, chloramine, and compounds associated with undesirable taste and odor before the water reaches the RO membrane.

Stage 3 — Reverse Osmosis Membrane
Recommended replacement: 2–3 years

The heart of the system is a 0.0001-micron RO membrane designed to reduce dissolved contaminants identified by the manufacturer, including lead, fluoride, nitrates, arsenic, and other heavy metals.

Stage 4 — Post-Carbon Filter
Recommended replacement: approximately 12 months

Before reaching the faucet, filtered water passes through a final carbon stage designed to provide a finishing polish for clean, neutral-tasting drinking water.

Up to 99% Contaminant Reduction

The ECHO RO uses multiple filtration technologies to reduce up to 99% of specified contaminants, according to the manufacturer.

Combining sediment filtration, activated carbon, reverse osmosis, and final carbon polishing allows the system to address contaminants of different types and sizes rather than relying on a single filtration medium.

Efficient 1:1 Water Ratio

More efficient reverse osmosis.

Reverse osmosis naturally produces both purified water and reject water as contaminants are separated from the drinking-water supply.

The ECHO RO is designed with a 1:1 pure-water-to-drain ratio—approximately one gallon of filtered drinking water for every gallon directed to drain.

That represents a substantial improvement over the 3:1 or 4:1 ratios associated with many older conventional RO designs.

Easy Twist-In Filter Changes

Routine maintenance without complicated filter housings.

ECHO's bayonet-style cartridges are designed to make filter replacement straightforward.

A quarter-turn cartridge system allows filters to twist out and replacement cartridges to twist into position without traditional filter housings or specialized tools.

That means simpler routine maintenance and less time spent underneath the sink.

Key Features

• Tankless Design — Produces filtered drinking water on demand without a conventional storage tank or pressure bladder.
• Slim 4.25-Inch Profile — Helps preserve usable under-sink cabinet space.
• Four-Stage Filtration — Sediment, carbon block, reverse osmosis membrane, and post-carbon filtration work sequentially.
• 0.0001-Micron RO Membrane — Provides high-level filtration of dissolved contaminants specified by the manufacturer.
• Up to 99% Contaminant Reduction — Designed to reduce a broad range of specified drinking-water contaminants.
• 1:1 Pure-to-Drain Ratio — Produces approximately one gallon of filtered water for each gallon directed to drain.
• On-Demand Filtration — Water is filtered when needed rather than stored in a pressurized tank.
• Twist-In Cartridges — Quarter-turn replacement design simplifies routine filter changes.
• Dedicated Drinking-Water Faucet — Delivers filtered RO water directly at the sink.

Filter Replacement at a Glance

Filter life can vary based on incoming water quality and household water usage.

Why Choose the ECHO RO™?

The ECHO RO combines the contaminant-reduction capabilities of reverse osmosis with a design created for modern kitchens.

There is no bulky storage tank, the system occupies only 4.25 inches of cabinet depth, replacement cartridges are designed for simple quarter-turn changes, and its 1:1 pure-to-drain ratio provides a more water-efficient approach than many older RO designs.

For households looking for high-performance drinking-water filtration without giving up the cabinet beneath the sink, ECHO RO provides a compact, streamlined solution.

Advanced filtration. Less wasted space. Freshly filtered water on demand.

Quick Specifications

System Type: Tankless reverse osmosis
Filtration: 4-stage
RO Membrane: 0.0001 micron
Contaminant Reduction: Up to 99% of specified contaminants
System Depth: 4.25 inches
Pure-to-Drain Ratio: 1:1
Water Delivery: On demand
Filter Replacement: Twist-in bayonet cartridges
Storage Tank: None
Dedicated Faucet: Yes

Designed for Under-Sink Installation

Powerful filtration in just 4.25 inches of depth.

The ECHO RO™ is designed to install neatly beneath the kitchen sink while preserving valuable cabinet space.

The system connects to the home's cold-water supply, routes wastewater to the drain, and delivers freshly filtered water through a dedicated drinking-water faucet at the sink.

With a system depth of only 4.25 inches and approximately 5 inches of clear cabinet depth required, its slim profile provides a space-saving alternative to traditional reverse osmosis systems with bulky storage tanks.

Installation Requirements:

• Under-sink location
• Cold-water supply connection
• Drain connection
• Standard household electrical outlet
• Dedicated drinking-water faucet
• Approximately 5 inches of clear cabinet depth

Fresh Water on Demand

No storage tank. No waiting for a tank to refill.

The tankless ECHO RO produces filtered drinking water as it's needed, delivering water to the dedicated faucet at a flow rate of up to 1.2 liters per minute.

Because there is no conventional storage tank or pressure bladder, filtered water doesn't need to be stored beneath the sink between uses—and you keep more usable cabinet space.

Choose Your Faucet Finish

Complete the installation with a dedicated faucet that complements your kitchen.

Available options include Chrome • Stainless • Matte Black • No Faucet

The No Faucet option allows customers to provide their own compatible dedicated faucet when a different style or finish is preferred.

Product Specifications

Contaminant reduction, cartridge life, and pure-to-drain ratio can vary based on source-water chemistry, incoming water pressure, and usage.

Product Manuals