WaterBoost WB – Advant slim 500 Esybox Twin 2605B410SL

The WaterBoost WB-Advant Slim 500 Esybox Twin brings dual-pump redundancy and high flow performance to the compact slimline range. A 500-litre WRAS-approved UK-manufactured Advant slimline tank (500mm W × 1100mm L × 1250mm H) pairs with two DAB Esybox pumps in a coordinated Duty/Assist configuration, delivering 140 l/min at 3 bar and up to 6.5 bar maximum — with H2D wireless load balancing, WiFi, DConnect app, Google Home and Alexa voice control.

At just 500mm wide, the slimline tank passes through even the tightest doorways with 262mm to spare — opening up plant rooms, cellars and utility spaces that no standard-footprint 500L twin can reach. The two Esybox pumps communicate wirelessly via H2D technology — automatically balancing load and providing true duty/standby operation. If one pump requires servicing, the other continues to run without interruption. Both run at 43 dB(A) each.

All interconnecting pipework included — no site assembly required. The UK-manufactured tank carries an outstanding 10-year warranty and each DAB Esybox a 3-year warranty. Delivery is typically 1–2 working days.