Stiebel Eltron WWK 222 220L Heat Pump Hot Water System

The Stiebel Eltron WWK 222 220L Heat Pump Hot Water System is available online from Hot Water Outlet as a supply-only heat pump hot water unit with metro delivery available in selected areas Australia wide.

Customers can purchase the Stiebel Eltron WWK 222 as a supply-only heat pump hot water system and request assistance arranging installation quotes after purchase through licensed local installers in selected metro regions.

This page is for the standard WWK 222 model, not the WWK 222H. The WWK 222 is a 220L heat pump hot water system designed for efficient domestic hot water using surrounding air. It features active defrost, quiet encased compressor operation, a maintenance-free impressed current anode, solar PV compatibility and indoor or outdoor installation flexibility where suitable.

About the Stiebel Eltron WWK 222 220L

The Stiebel Eltron WWK 222 uses heat pump technology to draw heat from the surrounding air and transfer it into stored hot water. This makes it a practical upgrade option for customers wanting a more energy-efficient alternative to a standard electric storage hot water system.

The 220L capacity may suit smaller to medium households depending on hot water usage, shower flow rates, recovery expectations, tariff setup, climate and installation conditions.

The WWK 222 is the non-H model, which means it does not include the 1.7 kW smart element found in the WWK 222H. It is designed to generate hot water through heat pump operation and includes active defrost to support operation in cooler conditions.

Buy Stiebel Eltron WWK 222 Supply Only

Buy the Stiebel Eltron WWK 222 supply only online from Hot Water Outlet if you already have a licensed plumber and electrician arranged for installation.

The product price is for the unit only. Installation, valve kits, old system removal, disposal, electrical work, pipework changes, drainage, condensate management, base preparation, pressure control and compliance upgrades are not included unless separately quoted.

Common search terms this product suits include:

• Stiebel Eltron WWK 222 price

• Stiebel Eltron WWK 222 heat pump

• Stiebel Eltron 231209 heat pump

• 220L heat pump hot water system

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• Stiebel Eltron heat pump hot water

• Solar PV compatible heat pump

• Non-H Stiebel Eltron WWK 222

• Stiebel Eltron WWK 222 supply only

Installation Quotes Available After Purchase

Hot Water Outlet does not directly provide installation services.

After purchasing the Stiebel Eltron WWK 222 220L Heat Pump Hot Water System, customers in selected metro areas may request assistance arranging installation quotes through licensed local plumbers and electricians.

Installation quote availability depends on:

• service location

• installer availability

• installation suitability

• access

• airflow clearances

• drainage

• water pressure

• electrical requirements

• valve kit requirements

• available installation timeframes

Additional installation costs may apply for:

• valve kit replacement

• old system removal

• disposal

• electrical work

• power point or circuit changes

• pipework changes

• condensate drainage

• base or tray requirements

• pressure limiting valve requirements

• restricted access

• indoor space or ventilation requirements

• outdoor clearance requirements

• relocation from the existing hot water position

• non-compliant existing installation

Stiebel Eltron WWK 222 Delivery Brisbane

Hot Water Outlet offers metro delivery for the Stiebel Eltron WWK 222 220L Heat Pump Hot Water System in selected Brisbane areas.

This model may suit Brisbane homes replacing an older electric storage hot water system, especially where the customer wants a quality heat pump option with quiet operation, active defrost and solar PV compatibility.

Stiebel Eltron WWK 222 Delivery Gold Coast

Hot Water Outlet offers metro delivery for the Stiebel Eltron WWK 222 220L Heat Pump Hot Water System in selected Gold Coast service areas.

This system may suit coastal homes, townhouses, investment properties and family homes looking for a 220L heat pump hot water unit.

Stiebel Eltron WWK 222 Delivery Sydney

Hot Water Outlet offers metro delivery for the Stiebel Eltron WWK 222 220L Heat Pump Hot Water System in selected Sydney metro areas.

Customers can purchase online and request assistance arranging installation quotes after purchase where available.

Stiebel Eltron WWK 222 Delivery Melbourne

Hot Water Outlet offers metro delivery for the Stiebel Eltron WWK 222 220L Heat Pump Hot Water System in selected Melbourne metro areas.

Customers can purchase online and request assistance arranging installation quotes after purchase where available.

Is the Stiebel Eltron WWK 222 Right for Your Home?

This system may suit you if:

• you want a 220L heat pump hot water system

• you are replacing an existing electric storage hot water system

• your household has moderate hot water usage

• you want the standard WWK 222 model, not the WWK 222H

• you want a heat pump with active defrost

• you want a system suitable for hard or soft water areas

• you want a solar PV compatible hot water system

• you have suitable airflow, drainage, access and installation space

• you have suitable electrical provision or can arrange electrical work

• you prefer supply-only purchase flexibility

Extra work may be required if:

• the system is being moved to a new location

• existing valves are old, missing or non-compliant

• electrical upgrades are required

• drainage or condensate management needs to be added

• a suitable base or tray is required

• water pressure control is required

• indoor space or ventilation is not suitable

• outdoor clearances are restricted

• access is difficult

• the old system needs removal or disposal

• your household needs the H model with smart element support

• your household needs a larger capacity model due to higher hot water demand

Key Features of the Stiebel Eltron WWK 222

• 220L heat pump hot water system

• Article number 231209

• Standard WWK 222 model, not WWK 222H

• Heat pump-only model without the 1.7 kW smart element

• Designed for Australian conditions

• Made in Europe

• Uses ambient air heat for efficient hot water production

• Suitable for hard or soft water areas

• Maintenance-free impressed current anode

• Active defrost function

• Operates down to -5°C

• Solar PV compatible

• Can operate on off-peak power where available

• Low heat pump power consumption of 0.55 kW

• Rated voltage of 240 V

• Rated current of 10 A

• Seasonal COP of 3.94

• 220L cylinder capacity

• Can deliver up to 360L of 40°C shower temperature water at 20°C cold water temperature

• Maximum permissible operating pressure of 850 kPa

• R134a refrigerant

• 550 m³/h air flow rate

• IP24 rating

• Indoor or outdoor installation where suitable

• Minimum indoor space requirement of 13m³

• Outdoor clearance requirement of 500 mm either side of the grille

• Sound pressure level of 45 dB(A) at 1 m

• Empty weight of 120 kg

• Filled weight of approximately 340 kg

• 1553–1569 mm adjustable height x 690 mm diameter

• WaterMark approved

Quick Specs

Brand: Stiebel Eltron
Range: WWK
Product: WWK 222 220L Heat Pump Hot Water System
Article Number: 231209
System Type: Heat pump storage hot water
Tank Volume: 220L
Recommended Household Size: Smaller to medium households depending on usage
Installation Type: Indoor or outdoor where suitable
Model Type: Standard non-H model
Smart Element: No
Power Consumption at EN16147 / A15: 0.55 kW
Rated Voltage: 240 V
Rated Current: 10 A
Phases: 1/N/PE
Electrical Installation: As per AS/NZS3000
Installation Requirements: AS/NZS3500.4.2 and local requirements
Cylinder Material: Enamelled steel
Maximum Permissible Operating Pressure: 850 kPa
COP: 3.94 seasonal average
Application Range: -5°C to +42°C
Air Flow Rate: 550 m³/h
IP Rating: IP24
Refrigerant: R134a
Refrigerant Capacity: 0.85 kg
Height: 1553–1569 mm with adjustable feet
Diameter: 690 mm
Empty Weight: 120 kg
Filled Weight: Approximately 340 kg
Sound Pressure Level: 45 dB(A) at 1 m
Minimum Indoor Space Requirement: 13m³
Outdoor Clearance Requirement: 500 mm either side of grille
Approvals: WaterMark Lic No. WMKA00301, AS3498
Warranty: Current Stiebel Eltron warranty terms apply

Heat Pump Storage Hot Water

The Stiebel Eltron WWK 222 stores hot water in a 220L cylinder and uses heat pump technology to heat the water efficiently.

Instead of relying on a standard electric element as the main heating method, the WWK 222 uses the energy in surrounding air to generate hot water. This makes it a strong option for homes wanting to upgrade from a conventional electric storage hot water system where the site is suitable.

Standard WWK 222, Not WWK 222H

This product page is for the WWK 222 standard model, not the WWK 222H.

The WWK 222H includes a 1.7 kW smart element to assist recovery during high hot water usage. The WWK 222 does not include that smart element, making it the correct choice where the standard non-H model is required.

Customers with higher hot water recovery needs may need to compare the WWK 222 against the WWK 222H or a larger model before ordering.

Efficient Heat Pump Hot Water

The WWK 222 has a listed seasonal COP of 3.94. COP is a performance measure that compares heat output to electrical input under test conditions.

Real-world performance depends on ambient temperature, hot water usage, installation location, airflow, settings, tariff setup and household demand.

Active Defrost Function

The Stiebel Eltron WWK 222 includes active defrost to support heat pump operation in colder conditions.

When frost is detected at the evaporator, the active defrost function helps remove frost build-up so the system can return to normal hot water generation. This helps the unit operate down to -5°C without needing the H-model smart element.

Maintenance-Free Impressed Current Anode

The WWK 222 uses a maintenance-free impressed current anode making it suitable for hard or soft water areas.

Unlike sacrificial anodes that are designed to wear away over time, an impressed current anode is designed to provide corrosion protection without regular anode replacement under normal conditions.

Enamelled Steel Cylinder

The WWK 222 uses an enamelled steel cylinder. The cylinder is designed for domestic hot water storage and works with the impressed current anode for long service life.

Water quality, pressure control, correct installation and ongoing maintenance all play a role in long-term system performance.

Solar PV Compatibility

The Stiebel Eltron WWK 222 is compatible with solar PV integration where configured correctly.

A solar PV signal can allow the unit to increase tank temperature during peak solar production helping make better use of self-generated power where the home has a suitable solar setup.

Solar PV integration depends on the electrical setup, inverter capability, system configuration and installer requirements.

Off-Peak Operation Option

The WWK 222 can operate on off-peak power where available.

This may suit homes wanting to manage hot water running times around tariff windows, solar production or household usage patterns. Actual running costs depend on energy rates, settings, hot water demand and installation conditions.

Low Power Consumption

The WWK 222 has a listed heat pump power consumption of 0.55 kW and a current draw noted by Stiebel Eltron as 2.3 A on 240 V.

Electrical work must still be completed to Australian standards and site suitability should be checked before installation.

Indoor or Outdoor Installation

The Stiebel Eltron WWK 222 can be installed indoors or outdoors where suitable.

Indoor installation requires a clear space of 13m³ so the cold air from the refrigeration system can diffuse. Outdoor installation requires 500 mm clearance either side of the grille along with suitable drainage, access, base support and weather exposure conditions.

Quiet Encased Compressor

The WWK 222 is designed with an encased compressor to help reduce operating noise.

It has a listed average sound pressure level of 45 dB(A) at 1 m. Noise impact still depends on the installation location, surrounding walls, nearby bedrooms, fences, reflective surfaces and local site conditions.

Water Pressure and PLV Requirements

The WWK 222 has a maximum permissible operating pressure of 850 kPa.

Water pressure must be checked before installation. A pressure limiting valve may be required depending on the property’s incoming water pressure, the selected valve kit and the installation requirements.

High water pressure, missing valves or non-compliant existing pipework can affect installation scope and final cost.

Drainage and Condensate Requirements

Heat pumps produce condensate during normal operation. The installation location must allow suitable condensate drainage in addition to standard hot water system safety valve discharge requirements.

Drainage changes are not included unless separately quoted.

Clearance Requirements

Correct airflow is important for heat pump performance. The WWK 222 needs suitable installation clearance so the unit can draw and discharge air properly.

Poor airflow, tight enclosures, blocked grilles or unsuitable indoor spaces can reduce performance and may make the installation unsuitable.

STCs and Government Incentives

Heat pump hot water systems may be eligible for STCs or government incentives depending on the product, installation date, location and program rules.

Eligibility, rebate value and availability can change. Any incentive should be checked before purchase and should not be treated as guaranteed unless confirmed as part of the checkout or installation process.

WWK 222 vs WWK 222H

The WWK 222 is the standard 220L model. The WWK 222H is the 220L H model with a 1.7 kW smart element designed to assist with hot water recovery during higher usage.

Choose the WWK 222 if you specifically want the non-H model. Consider the WWK 222H if the property needs additional recovery support subject to electrical suitability and household demand.

WWK 222 vs WWK 302

The WWK 222 has a 220L cylinder capacity and can deliver up to 360L of 40°C shower temperature water at 20°C cold water temperature.

The WWK 302 has a larger 302L cylinder capacity and can deliver up to 540L of 40°C shower temperature water at 20°C cold water temperature.

The WWK 222 may suit smaller to medium households while the WWK 302 may be more suitable for larger households or higher hot water usage.

WWK 222 vs Standard Electric Storage

A standard electric storage system uses an electric element to heat water directly. The Stiebel Eltron WWK 222 uses heat pump technology to draw heat from the surrounding air.

The WWK 222 may be a better option for customers wanting an energy-efficient electric hot water upgrade, solar PV compatibility and a premium European-made heat pump. A standard electric storage system may still suit customers wanting a simpler lower upfront cost replacement where heat pump space, airflow, noise, drainage or electrical requirements are not suitable.

Common Uses

The Stiebel Eltron WWK 222 220L Heat Pump Hot Water System can be suitable for:

• electric storage hot water replacement

• heat pump hot water upgrades

• 220L hot water system replacement

• smaller to medium households

• homes with solar PV

• homes using off-peak power where available

• townhouses with suitable space

• family homes with moderate hot water usage

• rental properties

• investment properties

• renovation projects

• energy-efficient hot water upgrades

• homes wanting quiet heat pump operation

• homes wanting lower energy electric hot water operation

Frequently Asked Questions

Can I buy the Stiebel Eltron WWK 222 supply only?

Yes. You can buy the Stiebel Eltron WWK 222 as a supply-only unit if you already have a licensed plumber and electrician arranged.

Does Hot Water Outlet install heat pump hot water systems?

No. Hot Water Outlet does not directly provide installation services. Customers may request assistance arranging installation quotes after purchase in selected metro areas.

Can I get the Stiebel Eltron WWK 222 installed in Brisbane?

Customers in selected Brisbane areas may request assistance arranging installation quotes after purchase depending on location, access, site conditions and installer availability.

Can I get the Stiebel Eltron WWK 222 installed in Gold Coast?

Customers in selected Gold Coast service areas may request assistance arranging installation quotes after purchase subject to service coverage and site suitability.

Is installation included in the product price?

No. The product price is for the unit only unless separately quoted. Installation, valve kits, disposal, old system removal, electrical work, pipework changes, drainage and other extras are not included unless arranged separately.

Is this the WWK 222H?

No. This page is for the standard Stiebel Eltron WWK 222, not the WWK 222H.

Does the WWK 222 have a smart element?

No. The standard WWK 222 does not include the 1.7 kW smart element. The smart element is included in the WWK 222H model.

What size is the Stiebel Eltron WWK 222?

The Stiebel Eltron WWK 222 has a cylinder capacity of 220L.

What is the article number?

The listed article number for the standard WWK 222 is 231209.

What refrigerant does it use?

The Stiebel Eltron WWK 222 uses R134a refrigerant with a listed refrigerant capacity of 0.85 kg.

What is the COP?

The listed seasonal COP is 3.94.

What is the maximum operating pressure?

The listed maximum permissible operating pressure is 850 kPa.

Can it be installed outside?

Yes. The WWK 222 can be installed outdoors where suitable clearances, drainage, access and installation requirements are met.

Can it be installed indoors?

Yes. Indoor installation may be possible where the minimum space, ventilation, drainage and installation requirements are met. Stiebel Eltron lists a minimum indoor space requirement of 13m³.

What outdoor clearance is required?

Stiebel Eltron lists an outdoor clearance requirement of 500 mm either side of the grille. The installation guide should be checked for full requirements.

What are the dimensions?

The listed height is 1553–1569 mm with adjustable feet and the listed diameter is 690 mm.

What does it weigh?

The listed empty weight is 120 kg. Filled weight is approximately 340 kg.

What is the sound level?

The listed sound pressure level is 45 dB(A) at 1 m.

Does it have active defrost?

Yes. The WWK 222 includes active defrost to assist operation in cold climates.

Does it work with solar PV?

Yes. The WWK 222 can be connected with solar PV systems where configured correctly.

Can it run on off-peak power?

Yes. It can operate on off-peak power where available and where the installation is suitable.

Is electrical work included?

No. Electrical work is not included unless separately quoted.

Is it suitable for hard water areas?

Stiebel Eltron states the WWK range is suitable for hard or soft water areas with a maintenance-free impressed current anode.

Is it suitable for replacing an old electric hot water system?

Yes. It may be suitable for replacing an old electric storage hot water system provided the site has suitable space, airflow, drainage, electrical supply, water pressure and installation access.

What is the difference between the WWK 222 and WWK 222H?

The WWK 222 is the standard 220L heat pump model. The WWK 222H adds a 1.7 kW smart element to assist hot water recovery during higher usage.

What is the difference between the WWK 222 and WWK 302?

The WWK 222 has a 220L cylinder while the WWK 302 has a 302L cylinder. The WWK 302 may suit larger households or higher hot water demand.

Is it eligible for rebates?

It may be eligible for STCs or other incentives depending on the product, installation, location and current program rules. Eligibility should be checked before purchase and should not be treated as guaranteed.

What warranty does it have?

Stiebel Eltron warranty terms can vary by product and documentation version. Current warranty details should be checked before purchase.

* Requested element size may come delivered separately to system for electric systems - All units supplied with factory with 3.6kW

**Where a unit supplied is capable of supplying more than 50°C, a tempering valve must be installed on the property or purchased as part of a valve kit with your order.

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Important Note

Product suitability can vary by property, existing services, energy source, gas type, available space, connection points, pressure requirements and local compliance requirements. Always check product specifications carefully and confirm the selected hot water system, valves, fittings and accessories are suitable for your property before ordering.

Standard Delivery: 2–8 business days

Express Delivery: 1–4 business days

90% of products are delivered the next business day where stock, postcode eligibility and freight availability allow.

Delivery timeframes are estimates and may vary by product, stock location, delivery postcode, carrier availability and order timing. Wet weather, storms, flooding or unsafe site access may delay delivery and are additional to any advertised or guaranteed freight timeframes.