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Hommix hydRO 800GPD Under Sink Tankless RO System

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Hommix hydRO Pro 800GPD High-Flow Tankless Under-Sink RO System

The Hommix hydRO Pro is a high-flow tankless reverse osmosis system designed for homes that want cleaner drinking water without a bulky storage tank. With an 800GPD RO membrane, 2.1 litres per minute water flow rate, smart display, quick-change filters, and compact under-sink design, it delivers purified water on demand from a slim modern unit.

It is a strong choice for busy households, small offices, and kitchens where speed, space, and filtration performance all matter.

Why choose this system Key features Specifications FAQs

Why Choose the Hommix hydRO Pro Tankless RO System?

The hydRO Pro solves one of the biggest complaints with older reverse osmosis systems: slow water delivery. Instead of relying on a pressurised storage tank, this direct-flow system produces purified water when you need it, helping save under-sink space and reducing waiting around.

The official manual confirms an 800GPD RO membrane capacity, 2.1L/min water flow rate, 5000L rated total net water volume, and three main filtration stages: Sediment + Carbon, RO Membrane, and Post Carbon.

Hommix hydRO Pro tankless reverse osmosis system Hommix hydRO Pro under sink RO filtration stages

Key Features

800GPD Reverse Osmosis Membrane

The high-capacity RO membrane is designed for fast direct-flow purification, making it more practical for everyday use than slow tank-based systems.

Tankless Under-Sink Design

No storage tank means a cleaner installation, more usable cupboard space, and fresher water produced on demand.

2.1 Litres Per Minute Flow Rate

The official manual lists a water flow rate of 2.1L/min, giving fast access to purified water for glasses, bottles, kettles, and cooking.

Three Main Filter Stages

Water passes through Sediment + Carbon filtration, an 800GPD RO membrane, and a Post Carbon filter for a clean final taste.

Smart Display and Filter Alerts

The display shows TDS, filter status, pure water indication, flush status, and replacement alerts to make maintenance easier.

Quick-Change Filters

The filters are designed for simple replacement, with a press-release mechanism and reset process built into the unit.

High-Flow Tankless Reverse Osmosis for Everyday Drinking Water

Traditional RO systems are effective, but many rely on a storage tank that takes up cupboard space and can limit flow. The Hommix hydRO Pro is designed to avoid that issue with a direct-flow tankless layout and a high-capacity 800GPD membrane.

That makes it better suited to households that use filtered water regularly throughout the day for drinking, cooking, kettles, coffee machines, and filling reusable bottles.

Advanced Filtration in a Compact Under-Sink Unit

The hydRO Pro uses three main filter cartridges. The PCB filter combines sediment and carbon filtration to reduce sediment, rust, particles, residual chlorine, organic matter, colour, odour, and other water contaminants. The RO membrane is designed for purification of common drinking water contaminants including chlorine, lead, bacteria, viruses, heavy metals, microplastics, fluoride, pesticides, and other harmful contaminants. The final CB activated carbon filter helps improve taste and reduce odour.

The result is a compact system with serious filtration depth, without needing a traditional tank under the sink.

Modern kitchen with a built-in refrigerator and family in the background

Optional Alkaline Filter for Remineralised Taste

For customers who prefer remineralised water, the Hommix hydRO Pro can be paired with an optional alkaline filter that reintroduces minerals after reverse osmosis filtration. Many users prefer the resulting taste profile compared with standard RO water.

This is best treated as a taste and preference upgrade, not a medical feature. The system gives you the flexibility to tailor your drinking water setup to suit your household.

Compatible with Hommix 3 Way Filter Taps

The manual confirms the hydRO Pro can be connected to a Hommix 3 way tap. In that setup, the pure water tube connects to the filtered water connection on the 3 way tap instead of the separate filter tap.

This is a much cleaner option if you do not want to drill an extra hole for a separate drinking water tap. You can browse compatible options in our Hommix RO and 3 way filter tap collection.

Specifications

Product name Hommix hydRO Pro
System type Tankless under-sink reverse osmosis system
RO membrane capacity 800GPD
Water flow rate 2.1L/min
Rated voltage / frequency AC 220V ~ 50Hz
Rated power 110W
Rated total net water volume 5000L
Inlet water pressure 0.1MPa to 0.4MPa / 1 bar to 4 bar
Applicable water temperature 5°C to 38°C
Environmental temperature 2°C to 45°C
Water source Municipal tap water
Product dimensions 43.5cm depth x 13.0cm width x 38.5cm height
Filter stages Sediment + Carbon → RO Membrane → Post Carbon
PCB filter lifetime Approximately 12 months
RO membrane lifetime Approximately 24 months
CB filter lifetime Approximately 12 months
Warranty 2 years, subject to correct installation, approved parts, and regular maintenance

Specifications should be checked against your installation requirements, water pressure, cupboard space, and tap choice before ordering.

What Is Included?

Main System and Filters

Includes the Hommix hydRO Pro unit with front panel and three pre-installed filters: PCB Sediment + Carbon, RO 800GPD membrane, and CB Post Carbon filter.

Installation Parts

Includes filter tap, power adapter, water feed inlet valve, push-fit elbow connectors, tubing, security clips, drain saddle valve, stoppers, and key.

Smart Display and Maintenance Alerts

The display interface gives useful information without overcomplicating the system. It includes a TDS indicator, PCB filter status, RO filter status, CB filter status, flush indicator, pure water indicator, and power button.

Filter indicators remain steady when the filter can continue being used, flash when the filter is almost expired, and flash with an audible alarm when replacement is needed. That is exactly what a good RO system should do: remove guesswork from maintenance.

Filter Replacement Schedule

PCB Sediment + Carbon Filter

Approximate lifetime: 12 months. Designed to reduce sediment, rust, particles, residual chlorine, organic matter, colour, odour, and other contaminants.

RO Membrane

Approximate lifetime: 24 months. The main purification stage of the system, designed to reduce a broad range of drinking water contaminants.

CB Post Carbon Filter

Approximate lifetime: 12 months. Helps polish the final water taste and reduce odour before dispensing.

Tool-Free Filter Changes

The filter replacement process is designed to be simple, with the front cover removed and cartridges released and replaced from the front of the unit.

Downloads and User Guides

Use the manual to check installation, operating instructions, filter replacement steps, troubleshooting, specifications, and warranty information before purchase or installation.

📄
Hommix hydRO Pro Installation and Maintenance Manual
Complete installation, operation, maintenance, troubleshooting, specifications, and warranty guide.

Who This RO System Suits Best

Ideal For

Busy households, families, small offices, kitchens with limited under-sink space, and customers who want fast purified water without a storage tank.

Less Suitable For

Homes without suitable mains water pressure, customers without access to a power socket under the sink, or installations where the unit cannot remain upright.

Installation Notes Before You Buy

The system requires a municipal tap water supply, a suitable 1/2" BSP cold water connection, a drain connection, enough cupboard space, and access to a UK 3-pin power socket. It must be installed indoors in a clean, dry, well-ventilated area and must remain upright.

Water pressure should be between 1 and 4 bar. If your pressure exceeds 4 bar, the manual advises using a pressure reducer. This is not a detail to ignore; pressure matters with RO systems.

Browse More Under Sink Reverse Osmosis Systems

If you are comparing RO systems, browse our full under sink reverse osmosis systems collection. If you want to pair the hydRO Pro with a cleaner tap setup, explore our Hommix 3 way filter taps.

Frequently Asked Questions

Is the Hommix hydRO Pro a tankless RO system?

Yes. It is a tankless under-sink reverse osmosis system designed to produce purified water on demand without a storage tank.

What is the flow rate?

The official manual lists a water flow rate of 2.1 litres per minute.

What filters does the system use?

It uses a PCB Sediment + Carbon filter, an 800GPD RO membrane, and a CB Post Carbon filter.

How often do the filters need changing?

The PCB and CB filters are listed at approximately 12 months, while the RO membrane is listed at approximately 24 months.

Can I use it with a Hommix 3 way tap?

Yes. The manual confirms that when using a Hommix 3 way tap, the pure water tube connects to the filtered water connection on the 3 way tap instead of the single filter tap.

Does the system show TDS?

Yes. The display includes a TDS indicator, updated every 10 seconds. The manual notes that TDS is measured after the RO membrane and before the post carbon filter.

What water pressure does it need?

The inlet water pressure range is 0.1MPa to 0.4MPa, equal to 1 bar to 4 bar.

Does it include a tap?

Yes. The package contents include a filter tap. You can also connect the system to a compatible Hommix 3 way tap if you prefer a cleaner sink setup.

Why Buy Your Hommix hydRO Pro from Regal Flow?

When you buy through Regal Flow, you are buying from a specialist water filtration retailer with experience across under-sink reverse osmosis systems, 3 way taps, replacement filters, and installation compatibility. That matters because RO systems need the right pressure, tap setup, filter replacement plan, and under-sink space to work properly.

Need Help Choosing the Right Under Sink RO System?

Not sure about water pressure, installation, replacement filters or compatibility with a 3 way tap? Speak with our technical team before ordering and we will help you check the details.

Contact Support Team
✉ Email Support: info@regalflow.co.uk
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