WaterBoost ATX-450 PURE Twin Whole House Mains Pressure Booster

The WaterBoost ATX-450 Twin Pure is the highest-capacity Pure system in the range, pairing two 450-litre Flow-Thru™ anti-Legionella vessels with a single variable speed pump — connecting directly to the incoming cold water mains. Patented scoops and water vanes recirculate both vessels continuously, so the water in your home stays as fresh as the day it arrived. No break tank, no overflow, just two water connections required.

Peak burst flow reaches up to 140 l/min, with 60 l/min sustained for up to 11 minutes — before settling to a continuous boosted flow until the vessels recharge. The twin-vessel arrangement provides 540 litres of useable working capacity — double the single ATX-450 Pure. Variable speed inverter technology means the pump only generates the pressure your mains can’t already deliver, at a quiet 40 dB(A). WiFi via the H2D App enables remote monitoring and control. A mains bypass fits in seconds using 2 clips.

Twin Flow-Thru anti-Legionella vessels — total recirculation, no stagnation, the freshest water quality possible. Completely maintenance free. Ideal for high-occupancy properties, large homes, HMOs, hotels, care, hospitality and healthcare under a Legionella duty. 5-year tank warranty, 3-year pump warranty. Need less capacity? See the single-vessel ATX-450 Pure.