WB-Compact 4.5 ACW1 – Accumulator Booster Pump (Wall Mounted)

The WB-Compact 4.5 ACW1 is a digitally controlled, wall-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, ensuring consistent performance across showers, taps, and appliances.

Designed for space-saving wall installation, the ACW1 is ideal where floor space is limited or a neat, elevated mounting solution is preferred. It is fully compatible with both vertical and horizontal accumulator vessels, including systems from GWS, WaterBoost, Lowara, Grundfos, and Stuart Turner, and can be installed independently of the vessel for maximum layout flexibility. Pressure settings are easily adjusted via the integrated LCD display.

WRAS approved and exceptionally quiet in operation, the WB-Compact 4.5 ACW1 also features built-in Wi-Fi connectivity, enabling remote control through the DConnect app. Wireless updates and optional voice control integration provide a modern, future-ready solution for intelligent pressure boosting in accumulator-based systems.