Wahlbach 3-in-1 Instant Water Heater – Electronically Controlled | 18/21/24 kW

Upgrade your hot water system with the Wahlbach 3-in-1 Instant Water Heater, a premium, electronically controlled solution designed for efficient, high-performance heating. This German-engineered unit offers three adjustable power levels – 18, 21, and 24 kW – making it adaptable to different usage needs in residential or light commercial settings.


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Key Features:

✅ Adjustable Power Output:
One unit with selectable power of 18, 21, or 24 kW to match your energy needs.

✅ Premium Heating System:
Blank wire heating system ensures fast, consistent water heating with minimal heat loss.

✅ Energy Efficient (Class A):
Delivers hot water with optimal energy use, lowering your energy bills without sacrificing comfort.

✅ Precise Temperature Control:
Digital display and intuitive interface allow for accurate temperature settings between 38°C – 60°C.

✅ High Water Output:

At ΔT=25°C: 10.0 / 11.8 / 13.0 L/min

At ΔT=35°C: 7.0 / 8.2 / 9.3 L/min


✅ Low Activation Flow Rate:
Activates from just 2.5 L/min, ideal for modern low-flow taps and showers.

✅ Safe & Reliable Design:

Closed system with IP24 protection rating

Max inlet water temperature: 20°C

Maximum water pressure: 0.6 MPa

Minimum operating pressure: 0.1 MPa

Dry running protection and air bubble resistance


✅ Flexible Installation:
Compact size (472 × 255 × 115 mm) with both top and bottom electrical connection options for versatile placement. Includes a universal wall mounting plate for quick setup.

✅ Specifications:

Voltage: 400V 3~ 50Hz

Nominal Current: 26A–40A

Cable Size: 6.0 mm²

Water Connection: G1/2"

Weight: 4.5 kg



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Perfect for showers, sinks, or kitchen applications, the Wahlbach 3-in-1 heater offers instant hot water, reliable performance, and a sleek, compact design to fit any space. Enjoy German quality engineering at its finest – the ideal choice for modern homes looking to save energy and space.