Stiebel Eltron SHP-O 300 Plus 300L Heat Pump Hot Water System
The Stiebel Eltron SHP-O 300 Plus 300L Heat Pump Hot Water System is a large-capacity air-source heat pump designed for households wanting efficient stored hot water, smart control and solar PV compatibility.
With a 300L nominal capacity, R290 refrigerant, MyStiebel App control, SG Ready solar PV compatibility, a 1.5 kW auxiliary heater and a standard 10A electrical connection requirement, the SHP-O 300 Plus provides a modern alternative to conventional electric storage hot water.
Installed Today offers the SHP-O 300 Plus as a supply-only heat pump hot water system or with supplied-and-installed options across selected Brisbane and Gold Coast service areas, where available.
What Does the Stiebel Eltron SHP-O 300 Plus Do?
The SHP-O 300 Plus uses heat from the surrounding air to heat water stored inside its 300L cylinder.
Rather than relying primarily on direct electric resistance heating, the refrigeration cycle absorbs heat from ambient air and transfers that energy into the stored water. This allows the heat pump to provide domestic hot water while using significantly less direct resistance heating during normal operation.
An integrated 1.5 kW auxiliary heater is available to support water heating when required by the system, including during higher-demand or lower-temperature operating conditions.
Who Is the SHP-O 300 Plus Best For?
Larger Households
The 300L storage capacity can suit family homes and higher-demand households needing more stored hot water than the smaller SHP-O 200 Plus.
Electric Hot Water Upgrades
The SHP-O 300 Plus can suit selected properties replacing conventional electric storage where the site provides suitable airflow, drainage, electrical supply and service access.
Homes With Solar PV
SG Ready functionality and app-based scheduling can help households coordinate hot water heating with available solar electricity where the system is configured appropriately.
Stiebel Eltron SHP-O 300 Plus Key Details
Is the Stiebel Eltron SHP-O 300 Plus Right for My Home?
A Good Choice If...
You want a 300L heat pump with app control, solar PV compatibility, a standard 10A connection requirement and substantial stored hot water capacity.
Consider Another Option If...
Your property cannot provide suitable airflow, drainage, installation space, electrical supply or service access, or if your climate requires the broader cold-weather capability of the SHP-O Premium range.
Check Before Ordering
Confirm household hot water demand, dimensions, indoor or outdoor location, electrical supply, airflow, condensate drainage, water pressure, base condition, noise considerations and delivery access.
Is 300L Enough Hot Water for My Household?
The SHP-O 300 Plus provides substantially more stored water than the 200L model and is intended for larger domestic hot water requirements.
Actual household suitability depends on how the hot water is used rather than storage capacity alone.
- Number of people in the household
- Average shower duration
- Shower flow rates
- Number of bathrooms
- Bath usage
- Laundry and kitchen demand
- Timing of hot water use
- Climate and ambient temperature
- Solar PV operating strategy
- Desired recovery time
How Does the SHP-O 300 Plus Heat Water?
1. Ambient Heat Is Collected
The heat pump draws energy from the surrounding air through its evaporator and refrigeration circuit.
2. Heat Is Transferred
The compressor and refrigeration cycle raise the temperature of the refrigerant so heat can be transferred into the stored water.
3. Hot Water Is Stored
The heated water remains stored in the 300L cylinder until required at household hot water outlets.
Key Features of the Stiebel Eltron SHP-O 300 Plus
300L Storage
Provides substantial stored hot water capacity for family homes and higher-use residential applications.
MyStiebel App
Built-in connectivity allows compatible app-based monitoring and adjustment of hot water operation.
SG Ready Solar PV
The system can integrate with suitable solar PV setups to help maximise use of self-generated electricity.
R290 Refrigerant
Uses 152 grams of R290 refrigerant with a listed GWP of 0.02.
Automatic Hygiene Program
An integrated hygiene function forms part of the system's stored hot water management.
Smart Auxiliary Heater
The 1.5 kW auxiliary heater provides additional heating support when required by operating conditions or hot water demand.
Stiebel Eltron SHP-O 300 Plus Specifications
| Specification | Details |
|---|---|
| Brand | Stiebel Eltron |
| Range | SHP-O Plus |
| Model | SHP-O 300 Plus |
| Article Number | 204473 |
| System Type | Air-source heat pump storage hot water system |
| Nominal Capacity | 300 litres |
| Energy Efficiency Class | A+ |
| COP | 4.21 under EN16147 / A20 testing |
| Refrigerant | R290 |
| Refrigerant Charge | 152 g |
| Refrigerant GWP | 0.02 |
| Maximum DHW Temperature With Heat Pump | 65°C |
| Published Application Range | -6°C to +43°C, with electric element support at low ambient temperatures as required |
| Average Heat Pump Power Consumption | 0.44 kW under stated test conditions |
| Auxiliary Heater | 1.5 kW |
| Maximum Operating Current | 9.88 A |
| Power Supply | 1/N/PE 220–240 V, 50 Hz |
| Connection Requirement | 10A electrical connection |
| Ingress Protection | IP24 |
| Sound Pressure Level | 47 dB(A) at 2 metres, free field |
| Height | 1903 mm |
| Diameter | 650 mm |
| Empty Weight | 117 kg |
| Filled Weight | Approximately 422 kg |
| Hot Water Connection | G 1 |
| PTR Valve Setting | 850 kPa |
| Minimum Indoor Room Volume | 13 m³ for applicable indoor installation |
| App Control | MyStiebel App |
| Solar PV Compatibility | SG Ready |
| Active Defrost | No |
| Climate Positioning | Plus range intended for most regions; Premium range provides broader cold-climate capability |
How Efficient Is the SHP-O 300 Plus?
The SHP-O 300 Plus has a published COP of 4.21 under EN16147 / A20 testing.
COP compares useful heat output with the electrical energy consumed under controlled test conditions. A higher COP indicates that more heat energy is being transferred into the water for each unit of electrical input during the test.
Real-world electricity use varies with ambient temperature, incoming water temperature, household demand, system settings, installation conditions and how often the 1.5 kW auxiliary heater operates.
What Refrigerant Does the SHP-O 300 Plus Use?
The SHP-O 300 Plus uses 152 grams of R290 refrigerant, with a listed global warming potential of 0.02.
R290 is a flammable refrigerant, so refrigeration work must only be performed by appropriately qualified contractors. Normal licensed plumbing and electrical installation requirements also apply.
Does the SHP-O 300 Plus Have App Control?
Yes. The SHP-O 300 Plus can connect to the MyStiebel App for compatible remote monitoring and control.
App functionality can be used to manage operating times and hot water settings, helping households align operation with their daily routines, electricity tariffs or available solar generation.
App functionality depends on suitable network connectivity and compatible devices.
Can the SHP-O 300 Plus Work With Solar PV?
Yes. The SHP-O 300 Plus is SG Ready and designed for integration with suitable solar PV and energy-management arrangements.
This can help a household use more of its self-generated electricity for water heating rather than exporting that energy to the grid, depending on the solar system, electrical configuration and household demand.
Only a 10A Connection Is Required
The SHP-O 300 Plus operates from a 1/N/PE 220–240 V 50 Hz supply and has a listed maximum operating current of 9.88 amps.
Stiebel Eltron specifies a 10A electrical connection for the SHP-O range.
The existing electrical setup should still be checked before installation. Power-point work, circuit alterations or other electrical upgrades may be required depending on the property and final installation position.
What Does the 1.5 kW Auxiliary Heater Do?
The SHP-O 300 Plus includes a 1.5 kW auxiliary electric heater.
The heat pump remains the primary heating method during normal operation, while the auxiliary element can provide additional support during conditions where extra recovery is required.
Stiebel Eltron notes that the element is used where heating is required at low ambient temperatures.
What Temperature Range Can the SHP-O 300 Plus Operate In?
Stiebel Eltron lists the SHP-O 300 Plus with a published application range of approximately -6°C to +43°C.
The auxiliary electric element can provide heating support when ambient conditions are too low for normal compressor operation.
The Plus model does not include active defrost. Where very cold-climate performance is a major requirement, the SHP-O Premium range should also be considered.
Can the SHP-O 300 Plus Be Installed Indoors or Outdoors?
Yes. The SHP-O Plus is designed for indoor or outdoor installation where the selected location meets the manufacturer's requirements.
Indoor Installation
The installation room must be appropriately ventilated and meet the required room-volume and airflow conditions. A minimum room volume of 13 m³ applies to the relevant recirculation-air installation arrangement.
Outdoor Installation
The appliance needs suitable airflow, drainage, weather protection considerations and service access. The installation area must not obstruct the air intake or discharge.
How Loud Is the Stiebel Eltron SHP-O 300 Plus?
The SHP-O 300 Plus has a listed average sound pressure level of approximately 47 dB(A) at 2 metres in free-field conditions.
Installed sound can vary because walls, fences and other nearby structures can reflect sound. The final location should therefore consider bedrooms, windows, neighbouring properties and other acoustically sensitive areas.
What Is Required to Install the SHP-O 300 Plus?
- Suitable indoor or outdoor installation position
- Stable and level base
- Support for approximately 422 kg filled weight
- Unobstructed air intake and discharge
- Suitable condensate drainage
- Suitable hot and cold water pipework
- Correct safety and pressure-control valves
- Suitable incoming water pressure
- PTR valve discharge drainage
- Suitable 10A electrical connection
- Service and maintenance access
- Safe delivery and positioning access
- Suitable Wi-Fi coverage where app control is required
- Correct solar PV interface where SG Ready control is used
Will the SHP-O 300 Plus Fit in the Existing Location?
The SHP-O 300 Plus is approximately 1903 mm high x 650 mm diameter.
The listed empty weight is 117 kg, while the filled operating weight is approximately 422 kg.
Both the final installation position and the delivery path need to be checked before ordering.
What Water Pressure Requirements Apply?
The SHP-O 300 Plus has a listed 850 kPa PTR valve setting.
The property's incoming water pressure and existing valve arrangement should be checked before installation. A suitable pressure limiting valve or replacement valve set may be required depending on the existing plumbing and installation requirements.
High pressure, damaged valves or non-compliant existing pipework can change the installation scope and should not be assumed to be covered by a basic replacement installation.
Does a Heat Pump Need a Drain?
Yes. Heat pump operation produces condensate, so the SHP-O 300 Plus needs a suitable condensate drainage arrangement in addition to normal hot water safety-valve drainage.
The installation location should be checked before ordering to confirm that condensate can be directed to an appropriate discharge point without creating water damage or access problems.
Can the SHP-O 300 Plus Replace an Electric Storage Water Heater?
The SHP-O 300 Plus can be considered as an alternative to a larger conventional electric storage water heater where the property can accommodate heat pump installation requirements.
Electric Storage Replacement
The 300L storage capacity can suit selected larger electric hot water replacements where household demand and site conditions are suitable.
Changing Technology
Moving to a heat pump adds airflow, condensate drainage, refrigeration and noise considerations that may not apply to the existing electric cylinder.
Relocating the System
A new installation position can require additional pipework, drainage, electrical work, base preparation and labour.
SHP-O 200 Plus vs SHP-O 300 Plus
| Consideration | SHP-O 200 Plus | SHP-O 300 Plus |
|---|---|---|
| Nominal Capacity | 200L | 300L |
| Height | 1478 mm | 1903 mm |
| Diameter | 650 mm | 650 mm |
| Empty Weight | 98 kg | 117 kg |
| Filled Weight | Approximately 304 kg | Approximately 422 kg |
| COP EN16147 / A20 | 4.27 | 4.21 |
| Main Difference | Smaller storage capacity | 100L additional stored capacity |
The appropriate model depends on actual household hot water use, available installation space and desired storage reserve.
SHP-O Plus vs SHP-O Premium
SHP-O Plus
Designed for most Australian regions and provides R290 refrigerant, MyStiebel App control, solar PV compatibility and efficient heat pump operation without active defrost.
SHP-O Premium
Adds active defrost and broader cold-climate capability, making it relevant where very low ambient temperatures are an important installation consideration.
What's Included With the SHP-O 300 Plus?
Supply Only
Choose supply only if you already have suitable licensed plumbing and electrical trades arranged and simply need the SHP-O 300 Plus supplied.
Supplied & Installed
Eligible Brisbane and Gold Coast customers can choose a supplied-and-installed option where service coverage and site conditions allow.
Possible Additional Work
Valve replacement, electrical work, drainage, pipework changes, base preparation, relocation, old-system removal, disposal and difficult-access work may be additional depending on the site.
Choose How You Want to Order the SHP-O 300 Plus
Supply Only
Choose supply only if you already have the required licensed plumbing and electrical installation arrangements in place.
Brisbane Installation
Supply and installation may be available across selected Brisbane service areas, subject to site suitability, service coverage and installation availability.
Gold Coast Installation
Supply and installation may be available across selected Gold Coast service areas, subject to site suitability, service coverage and installation availability.
Buy the Stiebel Eltron SHP-O 300 Plus Across Australia
Installed Today can offer supply-only ordering to supported Australian locations, while eligible Brisbane and Gold Coast customers may also have supplied-and-installed options available.
Stiebel Eltron SHP-O 300 Plus Supply & Installation Brisbane
The SHP-O 300 Plus can suit Brisbane family homes, larger townhouses and properties replacing an electric storage water heater where the new position provides suitable airflow, drainage, electrical supply and service access.
Before installation, the site should be checked for delivery access, cylinder dimensions, filled weight, base condition, airflow, condensate drainage, valves, water pressure, electrical supply and old-system removal requirements.
Stiebel Eltron SHP-O 300 Plus Supply & Installation Gold Coast
Gold Coast customers may be able to order the SHP-O 300 Plus with installation where service coverage and site conditions allow.
The 300L capacity can make the unit relevant to family homes, larger townhouses and higher-demand properties wanting heat pump efficiency together with app control and solar PV compatibility.
Is the SHP-O 300 Plus Eligible for STCs?
The SHP-O 300 Plus may qualify for Small-scale Technology Certificates and other applicable hot water incentives where current product, installation and scheme requirements are met.
Certificate quantities, rebate availability and financial values can change depending on installation location, date, the system being replaced and current program rules.
Any rebate or incentive should be confirmed for the actual installation before purchase.
Questions About the Stiebel Eltron SHP-O 300 Plus
Can I Buy the SHP-O 300 Plus Supply Only?
Yes. Supply-only ordering is suitable where available if you already have the required licensed plumbing and electrical trades arranged.
Can Installed Today Install the SHP-O 300 Plus?
Supply and installation may be available in selected Brisbane and Gold Coast service areas, subject to service coverage, site suitability and installation availability.
What Is the Article Number?
The SHP-O 300 Plus article number is 204473.
What Is the Storage Capacity?
The system has a nominal storage capacity of 300 litres.
What Is the COP?
The published COP is 4.21 under EN16147 / A20 test conditions.
What Refrigerant Does It Use?
The SHP-O 300 Plus uses 152 grams of R290 refrigerant.
What Is the Refrigerant GWP?
The listed GWP is 0.02.
Does It Have Wi-Fi?
Yes. The system can be monitored and controlled using the compatible MyStiebel App.
Can It Work With Solar PV?
Yes. The SHP-O 300 Plus is SG Ready and can integrate with suitable solar PV or energy-management arrangements.
Does It Need a 10A Connection?
Yes. Stiebel Eltron lists a 10A electrical connection requirement, with maximum operating current of 9.88 A.
What Size Is the Auxiliary Heater?
The integrated auxiliary heater is rated at 1.5 kW.
What Is the Maximum Heat Pump Water Temperature?
The listed maximum domestic hot water temperature using heat pump operation is 65°C.
What Is the Operating Temperature Range?
The published application range is approximately -6°C to +43°C, with auxiliary-element support used in low-temperature conditions where required.
Does the SHP-O 300 Plus Have Active Defrost?
No. Active defrost is a feature of the SHP-O Premium range rather than the Plus model.
Can It Be Installed Indoors?
Yes, where the room volume, airflow, drainage and installation requirements are met. A minimum room volume of 13 m³ applies to the relevant indoor recirculation-air installation.
Can It Be Installed Outdoors?
Yes, where the installation area provides suitable airflow, drainage, weather conditions and service access in accordance with the installation requirements.
How Loud Is It?
The published average sound pressure level is approximately 47 dB(A) at 2 metres in free-field conditions.
What Are the Dimensions?
The SHP-O 300 Plus is approximately 1903 mm high x 650 mm diameter.
How Much Does It Weigh?
The listed empty weight is 117 kg and the filled operating weight is approximately 422 kg.
What Is the PTR Valve Setting?
The listed PTR valve setting is 850 kPa.
Does It Need Condensate Drainage?
Yes. Heat pump operation produces condensate, so a suitable condensate drainage arrangement is required.
Can It Replace an Electric Storage Water Heater?
Potentially, yes. The property still needs suitable installation space, airflow, condensate drainage, electrical supply, water pressure, plumbing and delivery access.
What Is the Difference Between the SHP-O 200 Plus and 300 Plus?
The SHP-O 200 Plus provides 200L of storage while the SHP-O 300 Plus increases nominal capacity to 300L for households needing more stored hot water.
What Is the Difference Between SHP-O Plus and Premium?
The Premium range adds active defrost and broader very-cold-climate capability. The Plus range is designed for most regions and does not use active defrost.
Stiebel Eltron SHP-O 300 Plus Warranty
For domestic installations, Stiebel Eltron lists 7 years parts warranty on the cylinder with 5 years labour, 5 years on the sealed refrigeration circuit with 5 years labour, and 2 years on other components with 2 years labour, subject to current warranty terms and conditions.
Correct installation, suitable water quality and pressure, adequate airflow, condensate drainage and maintenance in accordance with the manufacturer's instructions are important to reliable operation and warranty compliance.
Why Order the SHP-O 300 Plus From Installed Today?
Supply-Only Ordering
Suitable for customers who already have the required licensed trades and simply need the Stiebel Eltron heat pump supplied.
Installation Options
Eligible Brisbane and Gold Coast customers can check available supplied-and-installed options for the SHP-O 300 Plus.
Clear Installation Add-Ons
Valve work, electrical requirements, drainage, pipework changes, removal, disposal and other installation requirements can be separated from the unit price where applicable.
Is the Stiebel Eltron SHP-O 300 Plus Right for You?
The Stiebel Eltron SHP-O 300 Plus is primarily suited to households wanting substantial 300L storage together with heat pump efficiency, MyStiebel App control, SG Ready solar PV compatibility and a relatively simple 10A electrical connection requirement.
Its key characteristics include a 300L nominal capacity, COP of 4.21, R290 refrigerant, a 1.5 kW auxiliary heater, maximum 65°C heat-pump water temperature and a published 47 dB(A) sound pressure level at 2 metres.
Before ordering, check household hot water demand, dimensions, filled weight, electrical supply, airflow, condensate drainage, water pressure, indoor or outdoor installation requirements, noise considerations and delivery access. Choose supply only if you already have the required licensed trades arranged, or check available Brisbane and Gold Coast installation options where applicable.
Tempering valve information:
Where a hot water system is capable of delivering water above 50°C, a compliant tempering valve must be installed to control the temperature delivered to personal hygiene fixtures such as showers, baths, basins, and bathroom outlets. This helps reduce the risk of scalding and assists with meeting plumbing compliance requirements.
A tempering valve blends hot and cold water to deliver a safer controlled outlet temperature to required fixtures. The hot water unit itself may store water at a higher temperature, but the water delivered to personal hygiene outlets must be controlled where required by plumbing regulations.
If your property already has a suitable, compliant tempering valve installed, your licensed plumber can assess whether it is appropriate for use with the new hot water system. Existing valves may not always be suitable due to age, condition, compliance requirements, valve type, location, or system compatibility.
If a compliant tempering valve is not already installed, or if the existing valve is unsuitable, one must be supplied and installed by a licensed plumber as part of the hot water installation.
Tempering valves are not automatically included with every supply-only hot water unit unless specifically selected, listed as included, or purchased as part of a suitable valve kit. If a tempering valve is required, please purchase the appropriate valve kit with your order or arrange for your licensed installer to supply and install the correct tempering valve on site.
It is the customer’s responsibility to ensure the installation is completed by appropriately licensed trades and that all required valves, fittings, electrical work, plumbing work, and compliance requirements are allowed for as part of the installation.
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Common Installation Add-Ons Available
Where relevant, you can add common installation extras such as valve kits, bases, access-related items, removal, electrical options or other site-specific upgrades before checkout.
Built Around Brisbane and Gold Coast Homes
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Important Installation Note
Installation availability, inclusions and add-ons vary by product type, service area, site access, existing services, selected options and property requirements.
Some jobs may require additional work, upgrades or checks before installation can proceed. Final suitability may need to be confirmed based on site conditions, plumbing, electrical requirements, valves, drainage, access and compliance requirements.
Supply-only orders do not include installation, old unit removal, disposal, valve kits, electrical work, plumbing alterations or compliance upgrades unless these are clearly selected or included in your order.
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Installed Today makes delivery simple, whether you are ordering supply-only or choosing an optional install package.
For supply-only orders, you can select from available delivery options at checkout. For eligible orders with installation selected, shipping is included and coordinated to align with your selected installation period where possible.
Delivery Options
Same Day Delivery
Same day delivery may be available for selected hot water systems in Brisbane and Gold Coast metro areas when ordered before 7:00am.
Availability depends on stock, courier capacity, delivery location, product type and safe transport conditions.
Express Delivery
Express delivery is available on selected products and locations, with an estimated delivery timeframe of 1–4 business days.
Standard Delivery
Standard delivery is available on selected products, with an estimated delivery timeframe of 2–8 business days.
Free Shipping with Installation
When you select an eligible installation package, delivery is included as part of the supplied and installed order.
Your product delivery will be organised to align with your selected installation period where possible, helping avoid separate courier timing, storage issues or delays between delivery and installation.
Fast Metro Delivery
Most hot water orders in metro areas are delivered quickly, with many arriving within 1 business day depending on stock, location, order time and courier availability.
Weather and Transport Delays
Hot water systems are large, heavy products and cannot always be transported safely during rain or unsafe handling conditions.
Delivery timeframes may be affected if wet weather impacts loading, unloading, transport access or safe delivery conditions.
Express Delivery Refund
If your express delivery order takes longer than the estimated 1–4 business day express timeframe, your order will move to the standard 2–8 business day delivery timeframe and your express shipping charge will be refunded automatically.
Order Tracking
We will send your delivery details once your order has been dispatched or scheduled.
For supplied and installed orders, delivery timing may be coordinated around your selected installation period rather than sent as a separate courier-only delivery.
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Not sure whether to choose supply-only delivery or an optional install package? Contact our team before ordering and we can help you understand the best option for your product, location and timing.