Rheem Stellar 360 Natural Gas Hot Water System
The Rheem Stellar 360 is Rheem's larger premium Stellar gas storage water heater, combining a 160-litre storage cylinder with very fast 200L/hour recovery to provide a manufacturer-listed 360L first-hour hot-water capacity.
Model 850360 is a 5 Star natural gas water heater designed for outdoor installation. Rheem currently lists it for households of up to seven people under its stated moderate-climate sizing assumptions, making it particularly relevant to larger households that want strong stored-hot-water recovery.
The Stellar 360 uses Rheem Superflue technology, provides mains-pressure hot water for simultaneous outlet use and is manufactured in Australia.
Installed Today can offer the Rheem Stellar 360 as supply only or through eligible supplied-and-installed pathways in Brisbane and Gold Coast service areas, subject to natural gas availability, existing service capacity, plumbing, water pressure, installation location and site access.
What Is the Rheem Stellar 360?
The Stellar 360 is a mains-pressure gas storage water heater from Rheem's premium Stellar range.
Unlike continuous-flow gas systems, it stores heated water in a cylinder. When hot water is drawn from the tank, its high-output gas burner reheats incoming cold water rapidly.
This combination of stored capacity and fast recovery is what allows a 160L cylinder to provide a much larger first-hour hot-water figure than the storage volume alone.
The catalogue model is 850360. Current installation documentation identifies the natural-gas variant with an N suffix on the full rating-plate model code.
How Many People Does the Stellar 360 Suit?
Rheem currently lists the Stellar 360 for up to seven people under its stated sizing assumptions.
Rheem's current broader sizing guide lists the 850360 at approximately 4–7 people in a moderate climate and approximately 3–6 people in a cool climate.
The manufacturer's sizing assumptions include seven-minute showers at a 42°C mixed-water temperature with the thermostat at its maximum setting.
Larger Families
The high first-hour capacity makes the Stellar 360 relevant where several people need hot water within a relatively short period.
Multiple Hot-Water Outlets
Mains-pressure delivery allows the system to support simultaneous hot-water demand where the property's plumbing and mains pressure are suitable.
Existing Gas Storage Homes
It is particularly suited to properties already set up for an external natural-gas storage water heater.
Household sizing is a guide rather than a guarantee. Long showers, large baths, high-flow fixtures and concentrated demand can change the appropriate water-heater size.
Rheem Stellar 360 Key Details
Why Is a 160L Tank Called the Stellar 360?
The 360 refers to first-hour capacity rather than physical tank storage.
First-hour capacity combines the amount of hot water already stored in the cylinder with the amount the burner can recover while water is being used.
For the Stellar 360:
- 160L nominal stored capacity
- 200L/hour manufacturer recovery rate
- 360L manufacturer-listed first-hour capacity
- Recovery rating based on a 45°C temperature rise
This is why storage volume alone does not accurately describe the short-term hot-water capability of a high-recovery gas storage system.
What Does 200L/Hour Recovery Mean?
Rheem lists the Stellar 360 with a 200L/hour hot-water recovery rate based on a 45°C temperature rise.
Recovery describes how quickly completely cold replacement water can be reheated under the manufacturer's stated test condition.
Fast recovery can be useful where several showers or other hot-water demands occur close together because the burner continues replacing heat while water is being drawn from the cylinder.
How Efficient Is the Rheem Stellar 360?
Rheem gives the Stellar 360 a 5 Star gas energy rating.
Rheem positions the Stellar range as a higher-efficiency alternative to older 3 Star and 4 Star gas storage products.
The model uses a maximum gas input of approximately 42MJ/hour and incorporates the manufacturer's Superflue heat-transfer design.
Actual gas consumption and household running costs depend on water use, thermostat setting, incoming water temperature, gas tariffs and installation conditions.
What Is Rheem Superflue?
The Stellar uses Rheem's patented Superflue design as part of its high-efficiency gas-storage construction.
Heat from the gas burner is transferred into the water through the base, cylinder surfaces and central flue system before combustion products discharge through the outdoor flue terminal.
The Superflue forms part of the Stellar's manufacturer warranty structure alongside the storage cylinder.
Rheem Stellar 360 Specifications
| Specification | Rheem Stellar 360 |
|---|---|
| Brand | Rheem |
| Range | Stellar Gas Storage |
| Model | 850360 |
| Gas Type | Natural gas |
| System Type | Mains-pressure gas storage water heater |
| Installation | Outdoor only |
| Storage Capacity | 160L |
| First-Hour Capacity | 360L |
| Hourly Recovery | 200L/hour based on a 45°C rise |
| Gas Energy Rating | 5 Star |
| Gas Consumption | 42MJ/hour |
| Overall Height | Approximately 1900mm |
| Approximate Width | Approximately 485mm across the main body |
| Approximate Depth | Approximately 558mm |
| Packaged Weight | Approximately 101kg |
| Water Connections | Rp 3/4 |
| Gas Connection | Rp 1/2 |
| TPR Valve Setting | 1400kPa |
| Expansion Control Valve Setting | 1200kPa where fitted |
| Maximum Mains Pressure With ECV | 960kPa |
| Maximum Mains Pressure Without ECV | 1120kPa |
| Mains-Pressure Guide | Rheem recommends supply pressure above approximately 350kPa for true mains-pressure operation |
| Ignition | Piezo pilot ignition with permanent pilot flame |
| Storage Cylinder | Vitreous-enamel-lined steel cylinder |
| Anodes | Two |
| Country of Manufacture | Australia |
Is the Rheem Stellar 360 Natural Gas or LPG?
This product page is for the natural-gas Stellar 360.
Rheem identifies the Australian natural-gas model within the 850360 family and uses the N identifier on the full gas-model designation.
The gas type must match the property's supply and rating plate before installation.
Can the Rheem Stellar 360 Be Installed Indoors?
No. Rheem's current installation guide specifies the 850 Series Stellar 330 and 360 as outdoor water heaters only.
The Stellar 360 has an integrated outdoor flue arrangement and must be positioned so combustion products discharge safely in accordance with the manufacturer's location requirements and applicable gas-installation rules.
What Clearance Does the Stellar 360 Need?
The final gas-appliance location must satisfy Rheem's instructions and the applicable gas-installation requirements.
Rheem's current installation guide includes key location considerations such as:
- At least 500mm from the flue terminal to the edge of relevant building openings under the manufacturer's illustrated guide
- At least 500mm between the flue terminal and a return wall or external corner under the manufacturer's illustrated guide
- Flue terminal kept clear of obstructions and shrubbery
- Access to the TPR-valve lever
- Access to the burner and service covers
- Sufficient service access without requiring a ladder or scaffold
- Suitable access for future removal of the complete water heater
The gas fitter confirms the final clearances for the actual building geometry rather than relying on a single dimension in isolation.
What Surface Does the Stellar 360 Need?
Rheem requires the water heater to stand vertically upright at ground or floor level on a stable, fire-resistant base acceptable for the installation.
The current guide specifies the back of the water heater against, or within approximately 25mm of, an external wall, or against a suitable fire-resistant screen arranged in accordance with the manufacturer's instructions.
Rheem also supplies wall brackets and recommends that the top of the water heater be secured to the wall or screen using suitable fasteners.
What Water Pressure Limits Apply?
The Stellar 360 uses a 1400kPa temperature and pressure relief valve.
Where an expansion control valve is installed, Rheem specifies a 1200kPa ECV.
| Plumbing Arrangement | Maximum Mains Supply Pressure |
|---|---|
| Expansion Control Valve Fitted | 960kPa |
| No Expansion Control Valve | 1120kPa |
If incoming pressure exceeds the applicable maximum, Rheem requires an approved pressure-limiting valve.
Rheem also states that supply pressure should be above approximately 350kPa to achieve true mains-pressure operation.
How Hot Does the Stellar 360 Store Water?
The user-adjustable gas thermostat allows stored-water temperature to be changed within the manufacturer's operating range.
Rheem states that a thermostat setting of approximately 6 normally maintains stored water at about 60°C, while the highest setting can produce water at approximately 65°C.
The water heater is intended to maintain sufficient stored-water temperature for its hygiene-control requirements.
How Is the Stellar 360 Ignited?
The Stellar uses a piezo push-button igniter to light its pilot flame.
A permanent pilot flame then remains available to ignite the main burner automatically when the thermostat calls for heat.
The main burner cycles on when stored water needs heating and switches off once the selected tank temperature is reached.
Can the Stellar 360 Supply Multiple Taps?
Yes. Rheem promotes the Stellar range as a mains-pressure storage water heater capable of servicing multiple hot-water demands at the same time.
Actual flow available at individual outlets still depends on the property's incoming pressure, plumbing size, fixture flow rates and simultaneous use elsewhere in the building.
Mains-pressure operation should therefore not be interpreted as a guaranteed fixed flow rate at every tap.
What Maintenance Does Rheem Recommend?
The current Stellar owner guide includes routine relief-valve checks and periodic professional servicing.
Rheem specifies operation of the TPR valve and expansion control valve, where fitted, approximately every six months to help ensure the valves and drain lines remain free to operate.
Rheem also recommends a major service in the fifth year after installation.
That servicing pathway includes checks relevant to the burner, valves, tank protection, anodes and overall water-heater operation.
How Is the Stellar 360 Cylinder Protected?
The vitreous-enamel-lined steel cylinder uses two sacrificial anodes as part of its corrosion-protection system.
Anode requirements can vary with local water chemistry.
Rheem's owner guide includes specific guidance for different total dissolved solids ranges and recommends periodic anode inspection or replacement according to the applicable water conditions and service schedule.
Rheem Stellar 360 Warranty
For a qualifying Stellar 360 installed in a single-family domestic dwelling, Rheem's current warranty provides:
| Warranty Period | Components | Coverage |
|---|---|---|
| Year 1 | All components | Repair or replacement of the faulty component, including labour, subject to warranty terms |
| Years 2–3 | Cylinder and Superflue | Repair or replacement, including labour, subject to warranty terms |
| Years 4–10 | Cylinder and Superflue | Replacement component supplied; installation and repair labour is the owner's responsibility |
This is commonly summarised as a 10-year cylinder warranty, 3-year cylinder labour warranty and 1-year parts-and-labour warranty on other components.
For installations that are not single-family domestic dwellings, Rheem's current warranty provides a shorter cylinder and Superflue parts-only period after the first year.
Buy the Rheem Stellar 360 Supply Only
Choose supply only where you already have appropriately licensed plumbing and gas trades arranged and require the water heater itself.
The unit-only price does not automatically include:
- Gas installation labour
- Plumbing installation
- Valve kit
- Temperature-control equipment
- Pressure-control alterations
- Gas-line upgrades
- Additional pipework
- Old-system disposal
- Relocation
- Difficult-access handling
The installer should verify natural gas supply capacity, water pressure and the current 850360 installation requirements before commissioning.
Rheem Stellar 360 Supplied & Installed
Eligible Brisbane and Gold Coast customers can select a supplied-and-installed pathway where the property and existing services suit a Stellar 360 replacement.
Natural Gas Check
The property must have the correct natural-gas supply and sufficient gas capacity for the 42MJ/hour appliance input.
Plumbing Check
Existing water pressure, valves, temperature control, pipework and relief-valve drainage need to suit the replacement installation.
Outdoor Location & Access
The installation needs a compliant outdoor position, stable fire-resistant base, flue clearances and safe handling access.
What Access Should Be Checked Before Ordering?
The Stellar 360 has an approximate packaged weight of 101kg and is around 1900mm high.
Standard installation assumes safe ground-floor external access to the installation area.
Additional handling arrangements may be required where access involves stairs, steep driveways, internal carrying routes, tight passages, lifting or other difficult-access conditions.
Rheem Stellar 360 Installation in Brisbane & Gold Coast
Installed Today can provide supplied-and-installed pathways across eligible Brisbane and Gold Coast service areas where the product and required gas-storage installation scope are available.
Additional work can apply where the property requires gas-line changes, new valves, pressure control, temperature control, additional plumbing, relocation, base work, difficult access or off-site disposal of the old water heater.
What Is the Difference Between Stellar 330 and Stellar 360?
| Specification | Stellar 330 | Stellar 360 |
|---|---|---|
| Model | 850330 | 850360 |
| Storage Capacity | 130L | 160L |
| First-Hour Capacity | 330L | 360L |
| Recovery | 200L/hour | 200L/hour |
| Gas Energy Rating | 5 Star | 5 Star |
| Current Rheem People Guide | Up to 6 | Up to 7 |
The main difference is storage capacity. Both use the same high 200L/hour recovery rate, while the Stellar 360 adds another 30L of stored water and therefore increases first-hour capacity from 330L to 360L.
How Does Stellar 360 Compare With Rheem 4 Star 170L?
| Specification | Stellar 360 | Rheem 4 Star 170L |
|---|---|---|
| Model | 850360 | 347170 |
| Storage Capacity | 160L | 170L |
| Recovery | 200L/hour | 120L/hour |
| Gas Input | 42MJ/hour | 27MJ/hour |
| Gas Energy Rating | 5 Star | 4 Star |
| Installation | Outdoor | Outdoor |
The 4 Star 170L stores slightly more water, while the Stellar 360 uses substantially faster recovery to provide greater short-term hot-water replenishment.
The appropriate choice depends on the existing installation, household demand, available gas supply and the desired balance between storage and recovery.
Why Choose the Rheem Stellar 360?
The Stellar 360 is designed for households that want to remain with natural-gas storage while gaining strong first-hour performance from a relatively compact stored volume.
Its combination of 160L storage, 200L/hour recovery, 360L first-hour capacity, 5 Star energy rating, mains-pressure delivery and Australian manufacture distinguishes it from lower-recovery conventional gas-storage models.
It is particularly relevant as an external replacement where the property already has a suitable natural-gas service and the household needs more short-term hot-water capacity than the Stellar 330.
Questions About the Rheem Stellar 360
What Is the Model Number?
The Rheem catalogue model is 850360. The full natural-gas rating-plate designation may include the manufacturer's N gas-type identifier.
Is the Stellar 360 Still a Current Product?
Yes. Rheem currently lists the Stellar 360 within its active residential gas-storage range.
Is It Natural Gas?
Yes. This page is for the natural-gas Stellar 360.
What Is the Storage Capacity?
The cylinder stores 160 litres.
Why Is It Called the Stellar 360?
The 360 name refers to its 360L first-hour capacity, which combines stored water with recovery.
What Is the Recovery Rate?
Rheem lists 200L/hour, based on a 45°C temperature rise.
How Many People Does Rheem Size It For?
Rheem's current product page lists up to seven people under its stated assumptions. Its broader sizing guide lists approximately 4–7 people in moderate climates and 3–6 in cool climates.
What Is the Gas Energy Rating?
The Stellar 360 is rated at 5 Stars.
What Is the Gas Input?
Approximately 42MJ/hour.
Is It Made in Australia?
Yes. Rheem currently identifies the Stellar 360 as Australian made.
Can It Be Installed Indoors?
No. Rheem specifies the Stellar 360 for outdoor installation only.
Does It Need a Flue Kit?
The Stellar is an outdoor gas storage water heater with its own designed flue-terminal arrangement. The final location must meet the manufacturer's flue-clearance requirements.
What Are the Approximate Dimensions?
The current Rheem dimensional data lists approximately 1900mm high, 485mm across the main body and 558mm deep.
How Heavy Is It?
Rheem lists an approximate 101kg packaged weight.
What Size Are the Water Connections?
The hot and cold connections are listed as Rp 3/4.
What Size Is the Gas Connection?
The gas connection is listed as Rp 1/2.
What Is the TPR Valve Setting?
Rheem specifies 1400kPa.
What Is the ECV Setting?
Where fitted, Rheem specifies a 1200kPa expansion control valve.
What Is the Maximum Mains Pressure With an ECV?
Rheem specifies 960kPa.
What Is the Maximum Mains Pressure Without an ECV?
Rheem specifies 1120kPa.
Does It Need a Pressure-Limiting Valve?
Yes where incoming mains pressure exceeds the applicable Rheem limit for the selected plumbing arrangement.
How Hot Does It Store Water?
The normal thermostat setting of 6 maintains approximately 60°C, while the highest setting can reach approximately 65°C.
Does It Need Temperature Limiting to Bathrooms?
The completed installation needs the appropriate temperature-limiting arrangement for personal-hygiene fixtures where required. Rheem recommends a suitable device between the heater and affected fixtures.
How Does the Ignition Work?
The Stellar uses a piezo push-button igniter and permanent pilot flame to ignite the main burner automatically.
Does It Have Two Anodes?
Yes. Rheem lists two anodes as part of the Stellar cylinder protection system.
Does It Need Servicing?
Yes. Rheem recommends routine valve checks and a major service in the fifth year after installation.
What Is the Cylinder Warranty?
For qualifying single-family domestic installations, the cylinder and Superflue receive coverage extending to 10 years, subject to Rheem's warranty terms.
How Long Is Labour Covered on the Cylinder?
For qualifying single-family domestic installations, cylinder and Superflue labour is covered through the first three years.
What Happens in Years 4 to 10?
For qualifying single-family domestic installations, Rheem supplies the replacement cylinder or Superflue under warranty, while installation and repair labour is the owner's responsibility.
What Warranty Applies to Other Components?
Other components receive one year parts and labour under the standard domestic warranty.
What Is the Difference Between the Stellar 330 and Stellar 360?
The 330 stores 130L and has 330L first-hour capacity. The 360 stores 160L and has 360L first-hour capacity. Both have 200L/hour recovery and a 5 Star gas energy rating.
Can I Buy the Stellar 360 Supply Only?
Yes. Supply-only ordering suits customers who already have appropriately licensed plumbing and gas trades arranged.
Can Installed Today Install It?
Eligible Brisbane and Gold Coast properties can select a supplied-and-installed pathway where the natural-gas supply, outdoor location, plumbing, water pressure and access are suitable.
Is the Rheem Stellar 360 Right for Your Home?
The Rheem Stellar 850360 is primarily aimed at larger households wanting to retain a premium natural-gas storage system with very fast recovery.
Its defining specifications are 160L storage, 360L first-hour capacity, 200L/hour recovery, 42MJ/hour gas input, a 5 Star energy rating and outdoor-only installation.
Before ordering, confirm that the property uses natural gas, the existing gas service has adequate capacity, the outdoor location satisfies the current flue and service-clearance requirements, incoming water pressure is suitable and access is adequate for the large 101kg packaged appliance.
For supply only, arrange appropriately licensed plumbing and gas trades. For eligible Brisbane and Gold Coast properties, select the matching supplied-and-installed pathway and any required valve, gas, plumbing, disposal or difficult-access add-ons before checkout.
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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