COMPACT RINNAI HEAT PUMP HOT WATER
Rinnai Enviroflo A Series 180L Heat Pump Hot Water System
The Rinnai Enviroflo A Series 180L is a compact integrated heat pump hot water system designed for smaller households wanting to reduce water-heating energy use compared with conventional electric storage.
The current product code is EHPT180VM. Rinnai sizes the system for households of up to three people, with a manufacturer guide of up to two bathrooms and three bedrooms.
The system combines a 180-litre storage cylinder with R134a refrigerant, built-in Wi-Fi timer control, SmartLife App compatibility, solar-PV networking capability, automatic disinfection, anti-frost protection and four operating modes.
The EHPT180VM is fitted with a 15 amp plug and has a manufacturer-listed maximum current of 11 amps. A suitable independent electrical supply is required.
Rinnai Enviroflo A Series 180L at a glance: 180L storage, up-to-3-person manufacturer sizing, 48dB(A) listed sound level, R134a refrigerant, 1.5kW electric element, 0.9kW refrigeration-module input, SmartLife Wi-Fi control, solar-PV networking capability and heat-pump operation from approximately -7°C to 43°C.
CURRENT PRODUCT
What Is the Rinnai Enviroflo A Series 180L?
The Enviroflo A Series uses a refrigeration cycle to absorb thermal energy from the surrounding air and transfer that energy into the stored water.
This allows the heat pump to provide most of the water-heating energy without relying solely on conventional resistance heating.
A factory-wired electric element provides additional heating capability when the system control strategy requires it.
Rinnai currently continues to list the EHPT180VM within its active heat-pump hot-water range.
HOUSEHOLD SIZING
How Many People Does the Rinnai A Series 180L Suit?
Rinnai lists the A Series 180L as ideal for households of up to three people.
Small Households
The compact 180L storage volume can suit smaller households where daily hot-water use falls within Rinnai's sizing assumptions.
Townhouses & Units
The smaller tank footprint can suit properties where a larger 250L-plus heat pump would be unnecessary or difficult to position.
Electric Storage Replacement
The A Series can suit selected homes moving from a smaller conventional electric storage system to heat-pump water heating.
Household sizing is a guide rather than a guarantee. Shower duration, baths, fixture flow rates and concentrated periods of hot-water use can change the required storage volume.
PRODUCT AT A GLANCE
Rinnai Enviroflo A Series Key Details
180L
Tank Capacity
Up to 3
People
48 dB(A)
Listed Sound
-7 to 43°C
Heat Pump Range
ENERGY PERFORMANCE
How Efficient Is the Rinnai Enviroflo A Series?
Rinnai states that the 180L A Series can use up to 70% less energy than a standard electric water heater of the same capacity under the manufacturer's stated comparison conditions.
That comparison is based on peak winter load in Zone 1 using AS/NZS 4234 modelling.
Actual household energy use depends on climate zone, hot-water demand, electricity tariffs, selected operating mode, ambient conditions and the system being replaced.
Rinnai lists a COP of 7.5 and a heat-pump heating capacity of 3.1kW at a test condition of 32.6°C ambient temperature and 21.1°C incoming cold water.
COP 7.5 is a manufacturer test-point result. It is not a constant year-round efficiency figure and should only be compared with other products where the test conditions are understood.
TECHNICAL SPECIFICATIONS
Rinnai Enviroflo A Series 180L Specifications
| Specification |
EHPT180VM |
| Brand |
Rinnai |
| Range |
Enviroflo A Series |
| Model |
EHPT180VM |
| System Type |
Integrated electric heat pump hot water system |
| Tank Volume |
180 litres |
| Rinnai Sizing Guide |
Up to 3 people, 2 bathrooms and 3 bedrooms |
| Height |
1730mm |
| Diameter |
570mm |
| Hot Outlet / PTR Height |
1035mm |
| Cold-Water Inlet Height |
145mm |
| Empty Weight |
100kg |
| Filled Weight |
Approximately 281kg |
| Sound Level |
48 dB(A) |
| Heat Pump Ambient Range |
-7°C to 43°C |
| Ingress Protection |
IPX4 |
| Refrigerant |
R134a |
| Refrigerant Charge |
1kg |
| Refrigerant Circuit Maximum Pressure |
2700 kPa |
| Electric Element Input |
1.5kW |
| Refrigeration Module Maximum Input |
0.9kW |
| Total Maximum Input |
2.4kW |
| Maximum Energy Output |
5.5kW for PTR sizing |
| Heat Pump Heating Capacity |
3.1kW at the stated manufacturer test condition |
| Power Supply |
220–240V AC / 50Hz |
| Maximum Current |
11A |
| Factory Electrical Connection |
15A plug fitted |
| COP |
7.5 at 32.6°C ambient / 21.1°C cold-water inlet |
| Hot / Cold Water Connections |
ISO 7.1 RP 3/4" |
| PTR Valve Connection |
ISO 7.1 RP 3/4" |
| PTR Valve Setting |
850 kPa / 30kW |
| Recommended PLV Rating |
500 kPa where pressure limitation is required |
ELECTRICAL REQUIREMENTS
What Electrical Supply Does the A Series Need?
The EHPT180VM is fitted with a power cord and 15A plug.
Rinnai specifies connection to an independent fused 240V, 50Hz electrical supply with the required isolation arrangement at the switchboard.
The manufacturer lists a maximum appliance current of 11A.
- 220–240V AC / 50Hz supply
- Independent electrical supply
- 11A maximum current
- Factory-fitted 15A plug
- Suitable matching socket outlet required
- Electrical work by appropriately authorised trades
This is not a standard 10A plug-in appliance. The 11A maximum current figure does not change the fact that Rinnai supplies the EHPT180VM with a 15A plug.
R134A REFRIGERANT
What Refrigerant Does the A Series Use?
The EHPT180VM uses R134a refrigerant with a manufacturer-listed charge of 1kg.
This differs from several newer Rinnai integrated heat pumps that use other refrigerants, so refrigerant specifications should not be copied between product families.
The refrigeration system should only be serviced by appropriately qualified personnel using procedures suitable for the appliance and refrigerant.
OPERATING MODES
What Operating Modes Does the Rinnai A Series Have?
Rinnai lists four operating modes:
Standard
Normal operation using the appliance's programmed heat-pump control strategy.
ECO
An energy-focused mode intended to favour efficient heat-pump operation.
Hybrid
Allows heat-pump operation and electric heating support to work according to the appliance's control strategy.
Electric
Provides electric-element operation where required by the selected operating mode.
The exact heating sequence is controlled by the appliance. The mode names should not be used to infer additional performance claims beyond Rinnai's operating instructions.
WI-FI CONTROL
Does the Enviroflo A Series Have Wi-Fi?
Yes. Rinnai lists a built-in Wi-Fi module for control through the SmartLife App.
The Wi-Fi timer can be used to manage operating periods and may help schedule water heating around household routines or expected solar-production periods.
Rinnai identifies SmartLife as a third-party application. App use is optional and depends on compatible devices, network availability and continued availability of the third-party service.
SOLAR PV
Can the Rinnai A Series Be Used With Solar PV?
Rinnai states that the A Series can be networked with solar PV panel systems.
Timer control can help schedule water heating into expected daytime generation periods where the property's electrical and solar setup is suitable.
Solar-PV compatibility should not be described as automatic surplus-solar diversion. A scheduled timer does not necessarily measure export and continuously vary heat-pump operation according to excess solar production.
AUTO DISINFECTION
Does the A Series Have Automatic Disinfection?
Yes. Rinnai includes an automatic disinfection function within the A Series control system.
The manufacturer describes the function as intended to help prevent the potential growth of Legionella through controlled water-temperature management.
This function does not remove the need for correct plumbing installation or temperature-limiting arrangements at applicable personal-hygiene fixtures.
COLD WEATHER OPERATION
How Does the A Series Handle Cold Conditions?
Rinnai lists normal heat-pump operation from approximately -7°C to 43°C ambient temperature.
The appliance includes a built-in anti-frost function to protect the evaporator in colder conditions.
The installation manual also states that the electric element can operate outside the normal heat-pump ambient range where water heating is required.
AUTO RESTART
What Happens After a Power Outage?
The A Series includes an automatic restart function.
Rinnai states that the appliance can automatically restart after electrical power is restored following an outage.
Recovery after power restoration still depends on the current stored-water temperature, ambient conditions and appliance operating mode.
SOUND
How Loud Is the Rinnai Enviroflo A Series?
Rinnai lists the EHPT180VM at 48 dB(A).
Real installed sound can vary because walls, fences, corners and other hard surfaces can reflect fan and compressor noise.
The final location should therefore consider bedrooms, neighbouring windows and other noise-sensitive areas.
SIZE & ACCESS
How Large and Heavy Is the Enviroflo A Series?
The appliance measures approximately 1730mm high x 570mm diameter.
Rinnai lists a net weight of approximately 100kg and a filled weight of approximately 281kg.
The delivery route and final installation position should be checked before ordering.
- Check gate and side-access width
- Check stairs and steep access
- Allow space around the heat-pump module
- Provide a stable supporting base
- Keep service panels accessible
- Keep the unit vertically upright during installation
AIRFLOW & CLEARANCES
What Clearance Does the A Series Need?
The heat pump requires clear space around the air inlet, air discharge and plumbing-service areas.
Rinnai's model-specific installation manual identifies key clearances including:
- 600mm on the plumbing-connection side
- 200mm on the fan-suction side
- Minimum vertical clearance of approximately 550mm
- Air inlet and outlet positioned away from strong wind
- Access to the PTR valve and service covers
- Enough surrounding space for future repair or replacement
Do not assess the installation location from the 570mm cylinder diameter alone. Additional airflow and servicing space is required around the appliance.
INDOOR OR OUTDOOR
Can the Rinnai Enviroflo A Series Be Installed Indoors?
Yes. Rinnai's current model-specific installation manual permits external or internal installation where the required conditions are satisfied.
For an internal installation, Rinnai specifies:
- Minimum room volume of 10m³ per unit
- Good ventilation
- Minimum ventilation rate of approximately 200 L/s per unit
- Location away from ignition sources
- Location away from corrosive environments
- Consideration of operating noise and reverberation
- Suitable condensate drainage
- Appropriate service access
The unit must remain accessible and installed vertically upright.
The appliance must not be installed in a roof space.
BASE & POSITION
What Base Does the A Series Need?
Rinnai requires the system to be installed free-standing on a level and stable base, with the cylinder no more than approximately two degrees out of perpendicular.
The manufacturer specifies a concrete base at least approximately 50mm thick or suitable evenly spread hardwood support at least approximately 25mm thick.
Where leakage could cause property damage, a suitable safe tray and drainage arrangement may also be required.
TRANSPORT & HANDLING
Can the Enviroflo A Series Be Transported on Its Side?
Rinnai instructs that the appliance should remain as upright as practical during transport and handling.
The unit should not be tilted more than 45 degrees from vertical.
Excessive tilting can affect compressor lubrication and place additional strain on the refrigeration system.
CONDENSATE & DRAINAGE
Does the A Series Need a Condensate Drain?
Yes. Condensate forms as the heat pump extracts thermal energy from the surrounding air.
Rinnai requires the condensate outlet to be connected to a suitable drain.
The installation also requires compliant drainage for the pressure and temperature relief valve and any expansion control valve used in the plumbing arrangement.
Drainage should be checked before ordering, particularly where the new heat pump is replacing an electric storage system that did not previously have a condensate connection.
WATER PRESSURE
What Water Pressure Requirements Apply?
Rinnai lists an 850 kPa maximum water pressure rating for the A Series and supplies an 850 kPa / 30kW PTR valve.
| Plumbing Arrangement |
Manufacturer Requirement |
| Expansion Control Valve Fitted |
Fit a pressure-limiting valve where mains pressure exceeds 680 kPa |
| No Expansion Control Valve |
Fit a pressure-limiting valve where mains pressure exceeds 800 kPa |
| Recommended PLV Rating |
500 kPa |
PLUMBING CONNECTIONS
What Plumbing Connections Does the A Series Use?
Rinnai's EHPT180VM manual specifies ISO 7.1 RP 3/4-inch connections for the hot-water outlet and cold-water inlet.
The model-specific manual also specifies an RP 3/4-inch PTR valve connection.
The PTR connection is not RP 1/2-inch on the current EHPT180VM manual. Use the model-specific plumbing specification when selecting valves and fittings.
WARRANTY
Rinnai Enviroflo A Series 180L Warranty
Rinnai's current A Series product information lists the following domestic warranty periods:
| Component |
Parts |
Labour |
| Inner Storage Cylinder |
7 years |
5 years |
| Refrigeration Components |
5 years |
5 years |
| Other Components |
1 year |
1 year |
Rinnai notes that the extended seven-year inner-cylinder warranty is subject to the applicable warranty conditions and scheduled-service requirements.
Refrigeration components include major refrigeration-system items such as the compressor, condenser, expansion valve, heat exchanger and evaporator.
Other components include items such as sensors, thermostats, valves, heating elements and anodes.
Warranty conditions matter. Eligibility depends on the applicable Rinnai warranty terms, installation requirements, use category and required maintenance or scheduled servicing.
SUPPLY ONLY
Buy the Rinnai Enviroflo A Series 180L Supply Only
Choose supply only where you already have appropriately licensed installation trades arranged and only require the heat pump supplied.
The unit-only price does not include plumbing installation, valve kits, electrical upgrades, condensate drainage alterations, old-system removal, disposal or other site-specific work unless selected separately.
The installer should use the model-specific EHPT180VM installation documentation and confirm the site's plumbing, drainage and 15A electrical supply before commissioning.
SUPPLY & INSTALL
Rinnai Enviroflo A Series 180L Supplied & Installed
Eligible Brisbane and Gold Coast customers can select a supplied-and-installed pathway where the property and selected installation scope are suitable.
Plumbing Check
Existing valves, mains pressure, pipework, temperature control and drainage need to suit the heat-pump installation.
Electrical Check
The installation needs a suitable independent electrical supply for the factory-fitted 15A plug.
Access & Position
The 100kg empty unit needs suitable delivery access, airflow, a stable base and sufficient room for future service.
INSTALLATION AREAS
Brisbane & Gold Coast Installation Options
Installed Today can provide supplied-and-installed options across eligible Brisbane and Gold Coast service areas where the product and required installation pathway are available.
Brisbane
Gold Coast
Additional work can apply where the property requires electrical upgrades, new valves, extra pipework, drainage changes, relocation, difficult access or base preparation.
STCS & INCENTIVES
Is the Rinnai Enviroflo A Series Eligible for STCs?
Rinnai currently promotes the A Series with federal and selected state government incentive pathways where the applicable scheme requirements are met.
The number and value of certificates or rebates can change according to installation date, location, product eligibility and program rules.
For this reason, a fixed historic STC quantity or rebate value should not be treated as a permanent product specification.
COMPACT HEAT PUMP FOR SMALLER HOUSEHOLDS
Why Choose the Rinnai Enviroflo A Series 180L?
The EHPT180VM combines a relatively compact 180L storage cylinder with current heat-pump features including Wi-Fi timer control, SmartLife App access, solar-PV networking, automatic disinfection and anti-frost protection.
Rinnai's up-to-three-person sizing guide makes it particularly relevant to smaller households that do not require the storage volume of a larger family heat pump.
Its main site requirements to check are the factory 15A electrical connection, airflow clearance, condensate drainage, water pressure, delivery access and available installation space.
COMMON QUESTIONS
Questions About the Rinnai Enviroflo A Series 180L
What Is the Product Code?
The current product code is EHPT180VM.
Is the Rinnai Enviroflo A Series Still Current?
Yes. Rinnai currently lists the 180L A Series within its active heat-pump hot-water range.
What Is the Tank Capacity?
The storage cylinder holds 180 litres.
How Many People Does Rinnai Size It For?
Rinnai lists the EHPT180VM for up to three people.
What Are the Dimensions?
Approximately 1730mm high x 570mm diameter.
How Much Does It Weigh?
Rinnai lists approximately 100kg empty and approximately 281kg filled.
What Refrigerant Does It Use?
The A Series uses R134a refrigerant.
How Much Refrigerant Does It Contain?
Rinnai lists a refrigerant charge of 1kg.
What Is the Electric Element Size?
The factory-wired electric element is rated at 1.5kW.
What Is the Refrigeration Module Input?
The manufacturer lists a maximum refrigeration-module input of 0.9kW.
What Is the Total Maximum Input?
Rinnai lists 2.4kW.
What Is the Heat-Pump Heating Capacity?
Rinnai lists 3.1kW at 32.6°C ambient temperature and 21.1°C incoming water.
What Is the COP?
Rinnai lists a COP of 7.5 at the same specified test condition.
What Is the Maximum Energy Output?
The manufacturer lists 5.5kW for PTR sizing. This is not the same as the 3.1kW heat-pump heating-capacity figure.
What Is the Sound Level?
Rinnai lists 48 dB(A).
What Is the Heat-Pump Operating Range?
The model-specific manual lists approximately -7°C to 43°C.
Does It Have Anti-Frost Protection?
Yes. Rinnai lists a built-in anti-frost function.
Does It Automatically Restart After a Power Outage?
Yes. Rinnai lists an automatic restart function once electrical power is restored.
Does It Have Auto Disinfection?
Yes. An automatic disinfection function is built into the appliance control system.
What Operating Modes Does It Have?
The system provides Standard, ECO, Hybrid and Electric modes.
Does It Have Wi-Fi?
Yes. The A Series has built-in Wi-Fi for optional SmartLife App control.
Can It Work With Solar PV?
Rinnai states that the system can be networked with solar PV panels and its Wi-Fi timer can help schedule water heating into suitable periods.
Does It Automatically Divert Excess Solar?
Rinnai's solar-PV networking and timer claims should not automatically be interpreted as proportional real-time surplus-solar diversion.
What Electrical Supply Does It Need?
The appliance requires an independent 220–240V AC, 50Hz supply suitable for its factory-fitted 15A plug.
What Is the Maximum Current?
Rinnai lists a maximum current of 11A.
Can It Plug Into a Standard 10A Power Point?
No. The appliance is supplied with a 15A plug and requires a suitable matching electrical outlet and circuit arrangement.
Can It Be Installed Indoors?
Yes. Rinnai permits internal installation where the room is at least approximately 10m³, has good ventilation of at least approximately 200 L/s and meets the other manufacturer requirements.
Can It Be Installed Outdoors?
Yes. The A Series can also be installed externally where its airflow, base, drainage and service-clearance requirements are met.
Can It Be Installed in a Roof Space?
No. Rinnai states that the appliance must not be installed in a roof space.
What Clearances Are Required?
The model-specific manual identifies approximately 600mm on the plumbing side, 200mm on the fan-suction side and a minimum vertical clearance of approximately 550mm.
Does It Need Condensate Drainage?
Yes. Condensate from heat-pump operation must be directed to a suitable drain.
What Is the Maximum Water Pressure?
Rinnai lists an 850 kPa maximum water pressure rating.
What Is the PTR Valve Setting?
The supplied PTR valve is specified at 850 kPa / 30kW.
What Size Is the PTR Connection?
The current EHPT180VM manual specifies an RP 3/4-inch PTR connection.
When Is a Pressure-Limiting Valve Required?
Rinnai specifies pressure limitation above 680 kPa where an ECV is fitted, or above 800 kPa where an ECV is not fitted.
What PLV Rating Does Rinnai Recommend?
Rinnai recommends 500 kPa where a pressure-limiting valve is required.
What Is the Current Domestic Cylinder Warranty?
Rinnai's current product information lists 7 years parts and 5 years labour on the inner storage cylinder, subject to the applicable extended-warranty and scheduled-service conditions.
What Is the Refrigeration Warranty?
Rinnai currently lists 5 years parts and labour on refrigeration components for qualifying domestic use.
What Warranty Applies to Other Components?
Other components are currently listed with 1 year parts and labour for qualifying domestic use.
Is It Eligible for Rebates or STCs?
Rinnai currently promotes government incentive availability where the applicable program and installation requirements are met. Current eligibility and value should be confirmed at the time of installation.
FINAL CHECK
Is the Rinnai Enviroflo A Series 180L Right for Your Home?
The Rinnai EHPT180VM is aimed at smaller households wanting a compact integrated heat pump with 180L storage and a manufacturer sizing guide of up to three people.
Its key features include SmartLife Wi-Fi control, solar-PV networking capability, four operating modes, auto disinfection, anti-frost protection, a 1.5kW electric element and factory-fitted 15A plug.
Before ordering, check household hot-water demand, available installation space, airflow, condensate drainage, water pressure, delivery access and the availability of a suitable 15A electrical supply.
For supply only, arrange appropriately licensed installation trades. For eligible Brisbane and Gold Coast properties, check the supplied-and-installed pathway and any required plumbing, electrical, drainage, access or base add-ons before checkout.
