World Class Water 1650

Higher-Capacity Water Softening for Larger Households

A 16-litre metered cabinet water softener designed for households of five or more people, providing approximately 2,600 litres of softened water between regenerations.

Recommended for households of 5+ people
16-litre cabinet capacity
Approximately 2,600 litres of softened water between regenerations
Suitable for combi boilers, vented and unvented systems

Higher Capacity

Designed for households of five or more people, with a 16-litre cabinet for increased demand.

Metered Operation

Regeneration is controlled by water use, helping the system operate efficiently rather than relying on a simple fixed timer.

Full-Flow Hoses Included

Supplied with full-flow hoses as standard to support domestic installation and good water flow.

24-Month Warranty

Manufacturer parts and labour warranty for manufacturing faults, subject to registration and warranty conditions.

World Class Water residential water softener

Built for Larger Homes

More Softened Water Between Regenerations

The WCW 1650 is the larger model in the World Class Water domestic range. Its 16-litre cabinet supplies approximately 2,600 litres of softened water between regenerations, making it better suited to larger households and higher daily demand.

5+ person household recommendation
16-litre cabinet
Approx. 2,600 litres between regenerations
580mm high × 280mm wide × 480mm deep

Domestic Water Softening

Designed for Reliable Everyday Use

The World Class Water 1650 combines a larger-capacity cabinet with automatic metered control, making it a strong option for busy family homes where water demand is higher throughout the day.

Higher-capacity 16-litre cabinet
Automatic metered regeneration
Designed for larger households
Compact cabinet format for domestic installation

Automatic Control

Meter-Controlled for Efficient Regeneration

The electronic controller is set to the incoming water hardness and manages regeneration according to use. This helps match salt and water consumption to the actual needs of the household.

5+ People Recommended household size

16 Litres Cabinet capacity

2,600 L Approx. softened water between regenerations

Metered Automatic regeneration control

Designed Around Your Water Supply

The incoming hardness setting should be matched to the local mains supply during commissioning. The manufacturer guide also allows the regeneration time and controller settings to be configured.

If you are unsure of your local hardness level, check it before setup so the softener can be programmed accurately.

What's Included

Core Installation Components Supplied

The manufacturer supplies the main connection components needed for the softener itself. Additional site-specific fittings may still be required by the installer.

World Class Water metered cold-water softener
Salt lid
2 × full-flow stainless steel hoses

Drain hose
Half-inch overflow hose
Outlet hose mesh washer insert

Installation note: The manufacturer guide states that a bypass should be fitted and supplied by the installer. An air-gap fitting is also not supplied with the softener.

Installation Planning

Compatible with Common UK Domestic Plumbing Systems

World Class Water states that the 1650 can be used with combination boilers, vented systems and unvented hot-water systems when installed correctly.

Combination Boilers

Install on the incoming mains feeding the boiler and domestic cold-water system, using suitable large-bore connections to support flow.

Unvented Cylinders

The softener can be installed upstream of the unvented cylinder and associated controls on a mains-pressure system.

Vented Systems

The manufacturer lists the WCW 1650 as suitable for vented domestic plumbing systems when correctly installed.

Untreated Drinking Water

The installation guide recommends leaving a suitable tap supplied with untreated mains water, typically the kitchen cold-water tap.

World Class Watercare residential water softener

Built Around the Home

Whole-Home Limescale Protection

Installed on the incoming mains supply, the 1650 softens water before it reaches showers, taps, boilers and household appliances. This helps reduce new limescale deposits throughout the property while improving the performance of soaps and detergents.

Helps protect boilers and hot-water equipment
Reduces scale around taps, showers and surfaces
Helps protect washing machines and dishwashers
Supports more effective use of soaps and detergents

Before Installation

Key Installation Requirements

1.5 bar Minimum incoming mains pressure stated in the guide

PRV Pressure reduction required where site pressure exceeds the manufacturer's stated limit

5–40°C Recommended ambient installation temperature range

Indoor Install in a dry, frost-free location on a suitable solid floor

Suitable drainage, overflow provision, backflow protection and access for salt filling and servicing are required. Installation must comply with applicable Water Supply (Water Fittings) Regulations.

Product Details

World Class Water 1650 Specifications

Recommended household size	5+ people
Cabinet capacity	16 litres
Softened water between regenerations	Approximately 2,600 litres
Height	580mm
Width	280mm
Depth	480mm
Operation	Meter-controlled automatic regeneration
Compatible systems	Combination boilers, vented and unvented systems
Minimum incoming pressure	1.5 bar
Installation environment	Indoor, dry and frost-free
Ambient temperature	5°C to 40°C
Maximum incoming water temperature	30°C
Salt type	Tablet or pebble salt
Connection hoses	Full-flow hoses supplied as standard
Warranty	24-month manufacturer parts and labour warranty, subject to registration and conditions

Installation and Operation

Official World Class Water Softener Installation Guide

View the manufacturer guide covering installation requirements, plumbing layouts, controller setup, commissioning, salt use, warranty terms and registration.

Installation guidance Controller programming Plumbing requirements Warranty and registration

View Handbook

Common Questions

World Class Water 1650 FAQs

How many people is the WCW 1650 suitable for?

World Class Water recommends the 1650 for households of five or more people.

How much softened water does it provide between regenerations?

The manufacturer states that the WCW 1650 supplies approximately 2,600 litres of softened water between regenerations.

Is the WCW 1650 automatic?

Yes. It is meter-controlled and automatically manages regeneration according to water use and the programmed hardness setting.

Can it be installed with a combi boiler?

Yes. World Class Water lists the 1650 as suitable for combination boiler systems when correctly installed.

Can it be used with an unvented cylinder?

Yes. The manufacturer states that the WCW 1650 is suitable for both vented and unvented systems.

What salt does it use?

Use tablet or pebble water-softener salt. The manufacturer recommends checking the salt level regularly and keeping it above the water level.

Does it come with installation hoses?

Yes. Full-flow hoses are supplied as standard. Other site-specific fittings, including the bypass, may need to be supplied by the installer.

What are the dimensions?

The WCW 1650 measures 580mm high, 280mm wide and 480mm deep.

What warranty does it have?

The manufacturer provides a 24-month parts and labour warranty for manufacturing faults, subject to its terms and registration requirements.

Compare the Range

Looking for a More Compact Water Softener?

The World Class Water 1050LL is the smaller 10-litre model, designed for households of two to four people where installation space is more restricted.

World Class Water 1050LL Compact 10-litre model for households of 2–4 people View All Water Softeners Compare the complete Regal Flow water softener range

Need Help Choosing the Right Water Softener?

Not sure whether the World Class Water 1650 is the right size for your home? Our technical team can help you assess household demand, water hardness, plumbing compatibility and installation requirements before you order.

Contact Support Team

Email Support info@regalflow.co.uk Telephone 0121 630 1130 WhatsApp Message our technical team

Products