Steeple PERFECT35 is the latest in water heater design and manufacturing for reliability and durability. This small instant hot water heater uses simple electronics to control water flow and temperature providing a reliable and steady flow of water to a bathroom hand wash sink. It is non-vented and has a minimum pressure requirement of 10psi or 0.7 bar. · · · Energy and water saving · · Instant warm water · · Zero power drain in stand-by · · Ideal in low duty cycle – DocM · · Small form factor · · Fitting kit included · · Use with regular taps · · Non-vented · · 1.5-3L/min flow rate