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Heat Pumps

Engineered by Germany's market leader, STIEBEL's hot water heat pumps harvest natural energy from the air to efficiently create hot water.

If you’re looking for an energy efficient means of providing your home with hot water, the heat pump hot water systems supplied by STIEBEL ELTRON are the answer.  Unlike solar systems, hot water heat pumps in Australia don’t rely on a steady supply of sunlight in order to operate – instead, they work at all times of the day or night and in all weather conditions.

Product Details

High-quality design from STIEBEL ELTRON.

German engineered, designed for Australian conditions

Market leader in heat pump technology since 1976

220 litre tank with high volume of hot water can deliver 360 L of 40°C shower temperature water at a cold water temperature of 20°C (302 litre tank delivers 540 litres)

Suitable for hard or soft water areas with maintenance free current impressed anode


Installation flexibility

Can be installed outdoors or indoors, indoor installation requires 13m3 of clear space

Single piece design for ease of installation

Active defrost function to assist operations in cold climates

Operates in cold climates down to minus 5°C


Energy efficient

Energy efficient operation saves up to 74% on hot water energy use*

Low power draw at only 2.3 Amps

Can operate on off-peak power where available

Access the Stiebel Eltron hot water heap pump table of technical specifications below 


Model number WWK 222 and WWK 222H WWK 302 and WWK 302H
Power consumption at (EN16147/A15) 0.55 kW 0.55 kW
Power consumption smart element H-model only: 1.7 kW H-model only: 1.7 kW
Rated voltage 240 V 240 V
Rated current 10 Amp 10 Amp
Phases 1/N/PE 1/N/PE
Electrical Installation As per AS/NZS3000
Installation requirements AS/NZS3500.4.2 & local requirements
Type of installation Outdoor or Indoor Outdoor or Indoor
Minimum space requirements

Indoor – 13m3
Outdoor – 500mm either side of the grill.
See installation guide

Cylinder capacity 220 Litres 302 Litres
Cylinder material Enamelled Steel
Permissible operating pressure 800 kPa 800 kPa
Seasonal coefficient of performance (COP) 3.94 3.58
Application range -5 to +42°C -5 to +42°C
Air flow rate 550 m3/h 550 m3/h
IP Rating IP24 IP24
Refrigerant R134a R134a
Refrigerant capacity 0.85 kg 0.85 kg
Height 1553-1569 mm (adjustable feet) 1921-1937 mm (adjustable feet)
Diameter 690 mm 690 mm
Weight (empty) 120 kg 135 kg
Approvals WaterMark Lic No. WMKA00301, AS3498
Weight (filled with water) 340 kg 437 kg
Average sound pressure level at 1m distance, free field (EN15036) 45 dB(A) 45 dB(A)