Our Alkaline RO System

iSpring RO5004F-AK – 500 GPD Alkaline Tankless RO

iSpring RO5004F-AK – 500 GPD Alkaline Tankless RO

High-capacity tankless reverse osmosis with alkaline remineralization. 500 GPD on demand with no storage tank. Ideal for families.


  • 500 GPD tankless design — no waiting

  • Alkaline remineralization filter

  • Removes up to 99% of contaminants

  • Compact under-sink installation

  • Chrome faucet included

  • Professional installation included

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System Specifications

Model iSpring RO5004F-AK
Stages 4 (Sediment/Carbon, RO Membrane, Alkaline, Post-Carbon)
Capacity 500 GPD (tankless)
Tank None (tankless on-demand)
Faucet Chrome

How It Works

Your water goes through a multi-stage process to ensure every drop is clean and safe.

1

Pre-Filtration

Water passes through sediment and carbon pre-filters to remove large particles and chlorine.

2

Reverse Osmosis

The reverse osmosis membrane removes up to 99% of dissolved contaminants including lead, fluoride, arsenic, and heavy metals.

3

Remineralization

The alkaline remineralization filter adds back healthy minerals (calcium, magnesium) and raises pH for great-tasting water.

What’s Included

Everything you need for clean water – installed and ready to go.

RO System

iSpring RO5004F-AK 500 GPD tankless reverse osmosis system with alkaline remineralization

Designer Faucet

Chrome designer faucet included

Professional Installation

Under-sink installation by our certified local technicians

Free Water Test

Comprehensive in-home water quality test

Setup & Calibration

Full system setup, TDS testing, and leak check

Replacement Filters

First set of replacement filters included

Satisfaction Guarantee

30-day satisfaction guarantee

Why This System?

High-capacity 500 GPD tankless design means unlimited purified water on demand. No tank to take up space under your sink, no waiting for water to fill. Ideal for families or anyone who uses a lot of drinking water. The tankless design also means fresher water — it’s purified the moment you turn on the faucet.

Ready to Get Started?

Every system includes a free in-home water test, professional installation, and our 30-day satisfaction guarantee.

Not sure which system is right for you? We’ll test your water and recommend the best option – no obligation.