Maximum-Flow Limescale Protection for Large Homes and Commercial Boilers

Ensure your high-demand heating system remains scale-free and energy-efficient with the Boiler Descaler 38 Lpm. Specifically engineered for large residential properties, guest houses, and light commercial applications, this unit uses Watts OneFlow® Technology to provide a robust, salt-free alternative to traditional water softening.

While standard units struggle with high demand, this 38 Lpm model is built for high-flow environments, ensuring that even when multiple hot taps or showers are running simultaneously, your boiler remains fully protected against the damaging effects of hard water.

Why Choose the 38 Lpm Boiler Descaler?

• Elite Scale Prevention: Utilizing Template Assisted Crystallization (TAC), this system converts hardness minerals into harmless, inactive microscopic crystals. These crystals pass through your system without sticking to heat exchangers, heating elements, or pipework.

• Maximum Throughput: Outperforming smaller models, this unit features a high-capacity 1.5 Litre dose of OneFlow anti-scale media, allowing for an impressive flow rate of up to 38 litres per minute without compromising performance.

• Dramatically Lower Energy Costs: Limescale is an insulator; just a small amount of buildup can force your boiler to work twice as hard. By keeping surfaces clean, this descaler ensures your system operates at peak efficiency, potentially saving you hundreds on annual energy bills.

• Eco-Friendly & Maintenance-Free: No salt bags to carry, no electricity required, and no wasted water from backwashing. It is a "fit and forget" solution that protects your investment sustainably.

• Water remains Drinkable: Unlike salt-based softeners, OneFlow does not add sodium or chemicals. It leaves the beneficial minerals (calcium and magnesium) in the water, making it perfectly safe for drinking and cooking.

Product Features

• Heavy-Duty Construction: Features a "Big Blue" 20-inch high-flow housing designed to handle higher pressures and flow volumes.

• Easy Installation: A simple "water in/water out" arrangement that any qualified plumber can install on the cold feed to the boiler or the main incoming line.

• Long-Life Cartridge: Designed for longevity, the high-capacity cartridge typically only needs replacing every 12 to 24 months.

Technical Specifications

• Flow Rate: Up to 38 Litres Per Minute (Lpm).

• Media Volume: 1.5 Litres (1500ml) Watts OneFlow Anti-Scale Media.

• Cartridge Size: 4.5" x 20" High-Flow.

• Max Pressure: 125 PSIG (8.6 bar).

• Operating Temperature: 10°C - 52°C.

• Dimensions: Approx. 60cm (H) x 20cm (W) x 20cm (D). Note: Please allow 10cm additional clearance below the unit for cartridge replacement.

Your Kit Includes:

• 1 x 20" High-flow filter housing (1" BSP female ports).

• 1 x Heavy-duty steel mounting bracket.

• 1 x Watts OneFlow 38 Lpm High-Capacity Cartridge.

• 1 x Housing spanner.

• Comprehensive installation instructions.

Note: The efficiency of OneFlow technology is enhanced if the water is filtered for chlorine first. While the system begins working immediately, it may take up to 90 days to fully clear existing residual scale from older pipework.