NANO SPA Provides efficiency, safety and above all reliability to effortlessly heat your water to the desired temperature, the Nano SPA heater is an ideal solution for spas. Features & Benefits Available in 8 sizes from 1-kW up to 8-kW Easy installation, fully equipped and pre-wired Robust, durable construction Ultra-reliable flow switch allows safe operation Supplied with temperature thermostat and overheating sensor Compact, durable design Analogue control with 1.2°C differential Titanium flow tube and titanium heating element Can be floor or vertically wall mounted Vortex, long life, stay clean heating element technology 100% efficiency throughout the product life Silent operation