Anchor EcoFlo AF-8004 Tankless Reverse Osmosis System, 800 GPD

Anchor Water Filters: Anchor EcoFlo AF-8004 is an under-sink, tankless reverse osmosis system with a claimed 800 GPD output. Its electric booster pump, listed 1 gpm maximum flow rate and twist-lock filters make it a fit for buyers prioritizing a compact point-of-use setup and simplified cartridge changes.

At a glance

Tankless under-sink design is intended to save space compared with a system that uses a storage tank.
The listing claims an 800 GPD capacity and a maximum flow rate of 1 gpm. These are different specifications and should not be treated as equivalent.
Twist-and-lock cartridge design is described as allowing tool-free filter replacement.
The manufacturer claims a 1:0.8 filtered-to-waste water ratio and up to 99% contaminant removal. These are listing claims, not independently established results.

Price

$479.99Save 20%

Reference price: ~~$599.99~~

Price checked: Nov 14, 2026

View offer Ahead of Black FridayExplore the selection

Pros and cons

Pros

Tankless form factor avoids a separate water storage tank beneath the sink.
Tool-free twist-and-lock filter replacement is intended to simplify cartridge changes.
The listing specifies the replacement filter models AF-1801, AF-1800 and AF-1802.

Technical specifications

15 specifications

Identity and treatment
Brand	Anchor Water Filters
Model	AF-8004
Purification method	Reverse Osmosis
Special features	Reduce TDS, Tankless, Twist and Lock, Water Saver Technology
Capacity	800 gallons

Power and operating limits
Power configuration	Corded Electric
Maximum flow rate	1 gpm
Operating pressure range	20 - 90 psi
Lower temperature range	40 °F
Upper temperature rating	100 °F
Maximum supported water TDS	500

Dimensions and installation
Installation type	Under Sink
Dimensions listed	15"L x 6"W x 15"H
Weight listed	22 pounds

Materials
Material listed	Plastic, Activated Carbon

What to know before buying

The listing says the system has a built-in booster pump that must be plugged in and gives a 110V rating. Confirm that the under-sink space and electrical connection suit your installation.

Listing details to confirm

The listing identifies an 800 GPD capacity as well as a 1 gpm maximum flow rate. It also describes the product as an EcoFlo Plus Alkaline Mineral pH+ system in one feature, while the title calls it EcoFlo 800. The 800 gallons capacity field is not clearly reconciled with the 800 GPD claim. Confirm the exact version and applicable flow and capacity figures before buying. The manufacturer also claims contaminant reduction and a 1:0.8 filtered-to-waste ratio, without supplied independent verification.

What’s in the box

Included

Installation kit

Who is it for?

A good fit for

Households wanting point-of-use reverse osmosis treatment without a storage tank.
Buyers with under-sink space for a unit listed at 15"L x 6"W x 15"H and access to an electrical outlet.
Users who prefer twist-lock filters designed for tool-free replacement.

Less suited to

Buyers seeking a system that does not require electrical power.
Anyone who needs independently verified contaminant-removal performance or a clearly reconciled production-rate specification before purchase.

Anchor EcoFlo AF-8004 Tankless Reverse Osmosis System, 800 GPD · photo 2 — Additional product photo 2

Frequently asked questions

Does the Anchor EcoFlo AF-8004 need electricity?

Yes. The listing identifies it as corded electric and says its built-in booster pump must be plugged in. It gives a 110V rating.

What is the system's stated output?

The title claims 800 GPD, while the details also list a maximum flow rate of 1 gpm. The listing does not reconcile these figures, so confirm the applicable output for the specific version.

Which replacement filters are listed?

The listing names AF-1801, AF-1800 and AF-1802. It also mentions AF-18004 as a replacement set without the RO membrane.