Monarch MAXIMA GS4000 HE28 Water Softener GS4004HE28 1″ Upgrade 28mm Supply with FreeFlow Valve and Rapid-Fit Kit

£995

🚚 Delivery in up to 5 working days (may be sooner) on this product

25L high capacity softener with 1″ upgrade for 28mm plumbing, FreeFlow valve, and Opti-Brining® technology. Complete with Rapid-Fit kit and built for up to 11 users.

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The Monarch MAXIMA GS4004HE28 is a powerful, light commercial water softener designed for properties with high usage. Fitted with a 1″ upgrade for 28mm plumbing systems, it uses HE food-grade resin with Opti-Brining® technology, regenerating only the used portion of resin for significant salt and water savings.

This 25-litre softener is ideal for up to 11 people, with a daily capacity of 4,750 litres at 300 ppm. Its intelligent microprocessor learns and adapts to your water consumption, while its FreeFlow valve ensures high flow rates up to 75 lpm with minimal pressure drop.

Supplied with braided connection hoses, Rapid-Fit bypass, and 2.5m drain/overflow hose, the GS4004HE28 also includes a water test kit for quick, reliable installation. It’s backed by Monarch’s 7-year parts and 2-year labour warranty.


Key Features

• 1″ Upgrade for 28mm Plumbing – Ideal for high-volume domestic or light commercial setups
• 25 Litre HE Resin Capacity – High performance with proportional regeneration control
• Opti-Brining® Technology – Regenerates only used resin for 56% salt savings
• FreeFlow Valve System – Maintains strong flow with low pressure drop (up to 75 lpm)
• Intelligent Microprocessor – Monitors and learns water usage patterns
• Rapid-Fit Bypass Included – Reduces install complexity and parts by 80%
• Extended Warranty – 7-year parts and 2-year labour protection


Applications

• Light Commercial Use – Suitable for salons, small cafés, clinics, and large homes
• High Water Demand Homes – Supports up to 11 people and multiple water outlets
• Scale Prevention – Prolongs appliance lifespan and improves water quality

Technical Specifications:

Feature Details
Brand Monarch Water
Product Name MAXIMA GS4004HE28 Water Softener
Part Number GS4004HE28
Material HE Food-Grade Resin
Finish Grey
Dimensions (H × W × D) 870mm × 350mm × 565mm
Daily Capacity 4,750 litres (at 300 ppm)
Salt Use per Regeneration 2.6 – 3.7 kg
Max Flow Rate 75 lpm
Water Pressure Range 1.5 – 5 bar
Max Operating Temperature 49°C
Connection 1″ mbsp (28mm compatible)
Electrical Supply 220v, 3-pin plug with transformer

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