WaterBoost ATX-450 PURE Whole House Mains Pressure Booster

The WaterBoost ATX-450 Pure is the hygiene-specification version of our highest-capacity ATX booster, connecting directly to the incoming cold water mains. It pairs a 450-litre Flow-Thru™ anti-Legionella vessel with a variable speed pump in a single compact unit. A patented scoop and water vane constantly recirculate the stored water — 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 80 l/min, with 36 l/min at 3.2 bar sustained for up to 11 minutes — before settling to a continuous boosted flow of 12 l/min at 3 bar until the vessel recharges. The 450-litre vessel provides 270 litres of useable working capacity. 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.

Flow-Thru anti-Legionella vessel — total recirculation, no stagnation, the freshest water quality possible. Completely maintenance free. Ideal for discerning homeowners wanting the freshest water, plus landlords, HMOs, care, hospitality and healthcare under a Legionella duty. 5-year tank warranty, 3-year pump warranty. Prefer sealed boosting without recirculation? See the standard ATX-450.