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The Stiebel Eltron SNU Plus 5 L + WST‑W Small Water Heater Set and Stiebel Eltron SNU 10 Plus + WST‑W Small Water Heater Set are compact undersink hot water solutions from Stiebel Eltron that combine a high‑quality small water heater with a dedicated non‑pressurised washbasin mixer tap. This integrated set is designed to deliver instant hot water at the point of use with minimal pipe runs and exceptionally low energy consumption, making it ideal for kitchens, bathrooms, utility rooms and light commercial washrooms where reliable localised warm water is required.
Available in both 5 litre and 10 litre capacities, the SNU Plus + WST‑W sets provide flexible sizing to match your usage demands while simplifying installation with a supplied vented tap and mounting hardware.
Compact undersink hot water heater with integrated WST‑W non‑pressurised mixer tap included
Set available in 5 litre and 10 litre versions to suit different usage levels
Adjustable mechanical temperature control with anti‑scald protection
Anti‑drip and reduced scaling function for water savings and improved efficiency
High grade insulation and low standby losses for energy‑efficient operation
Quick wall mounting and simple replacement of older heaters
Vertical undersink installation for a neat, space‑saving fit
Each SNU Plus + WST‑W set combines a compact non‑pressurised small water heater with a matching WST‑W low‑pressure washbasin tap engineered for use with vented systems. This configuration delivers hot water directly at the sink with minimal lag between turning on the tap and hot water delivery, eliminating lengthy pipe heat losses.
The 5 litre model is ideal for single washbasin applications and lighter usage, providing sufficient stored hot water for frequent short draws and efficient reheating. The 10 litre version increases stored capacity, offering more hot water per draw while still maintaining compact dimensions suitable for typical undersink spaces.
Both heater options operate on a 230 V single phase supply with a 2 kW connected load, delivering consistent performance with energy efficiency class A and low standby energy consumption.
The included WST‑W vented mixer tap is designed specifically for use with the non‑pressurised SNU Plus heater, ensuring optimal flow characteristics and compliance with safe operating conditions.
Power supply: 230 V single phase, 50‑60 Hz
Connected load: 2 kW
Temperature setting range: approx. 35–85 °C
Installation: Vertical undersink only
System type: Non‑pressurised small water heater
Colour: White
IP rating: IP24 D
Stiebel Eltron SNU Plus small water heater
Vented non‑pressurised washbasin mixer tap WST‑W
Universal wall mounting bracket and installation kit
User and installation instructions
The Stiebel Eltron SNU Plus + WST‑W Small Water Heater Set delivers a complete undersink hot water solution with efficient performance, integrated tap and simplified installation. Available in 5 litre and 10 litre options, it offers versatile sizing for washbasins and small point‑of‑use applications, combining dependable hot water delivery with energy‑efficient operation and thoughtful design.
