The WaterBoost WB-Compact 4.5 (ACM Series) is a compact variable speed inline mains pressure booster — designed to boost your incoming mains supply to up to 4.5 bar at up to 12 l/min. It installs directly on your mains supply pipe and starts automatically whenever mains pressure falls below its pre-set value — no break tank or storage vessel required. Suitable for combination boilers, unvented hot water cylinders, electric showers, and mixer showers.
Variable speed inverter maintains stable pressure as demand changes, even with multiple outlets in use simultaneously. WiFi via the DConnect app enables remote monitoring and control, with Google Home and Alexa voice commands — say "Hey Google, power shower" to boost pressure or "Hey Google, sleep mode" to quieten it overnight. Silent operation. Full-bore bypass can be fitted for uninterrupted supply during maintenance.
WRAS compliant — flow rate remains within the water authority limit of 12 l/min. If 3.0 bar is sufficient for your application, see the WB-Compact 3.0 (£355 + VAT). 3-year warranty.
WiFi · DConnect · Google · Alexa WRAS compliant Direct mains — no tank Variable speed ACM Series Silent operation
