WaterBoost WB-Compact 4.5 ACF1 – Accumulator Booster Pump (Floor Mounted)

WB-Compact 4.5 ACF1 – Digital Accumulator Booster Pump (Floor Mounted)

The WB-Compact 4.5 ACF1 is a digitally controlled, floor-mounted accumulator booster pump designed to deliver smooth, reliable water pressure when used with external accumulator or pressure vessels. Using advanced variable-speed inverter technology, it automatically adjusts output to boost pressure up to 4.5 bar, maintaining consistent performance across showers, taps, and appliances.

Designed for flexible installation, the ACF1 can be positioned independently of the accumulator and is fully compatible with both vertical and horizontal vessels, including systems from GWS, Lowara, Grundfos, and Stuart Turner. Pressure settings are easily adjusted via the integrated LCD display, allowing precise control to suit the installation.

WRAS approved and exceptionally quiet in operation, the WB-Compact 4.5 ACF1 also features built-in Wi-Fi connectivity, enabling remote control through the DConnect app. Additional smart functionality allows wireless updates and optional voice control integration, providing a modern, future-ready solution for accumulator-based pressure boosting.

Key Features

Improved – Features a new three-rotor hydraulic design with wireless update capability, allowing future performance and functionality enhancements.

Constant – Advanced inverter technology automatically regulates pump speed to maintain smooth, consistent water pressure.

Efficient – Variable-speed motor technology delivers energy savings of up to 50% compared with conventional fixed-speed pumps.

Quiet – Housed in a sound-absorbing casing with anti-vibration feet, operating at just 45 dB(A) at 1 metre.

Simple – Designed for straightforward installation, intuitive setup, and easy day-to-day operation.

Compact – Space-saving footprint measuring 439 × 263 × 236 mm (H × W × D) and weighing only 15 kg, ideal for tight installation spaces.

Reliable – WRAS approved for potable water use and backed by a three-year manufacturer’s guarantee.