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Hot Water Diverter Comparison Table

Last updated: September 2020

Below you'll find a list of all the solar hot water diverters available on the Australian market that we know of, along with price information and technical specifications.

A PV hot water diverter is a device that enables you to use surplus electricity generated by your solar power system to heat water. Find out more about what a hot water diverter is, how it works and whether you should buy one here. You can also read an in-depth comparison and review of the different solar diverter models here.

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Hit ‘Expand’ for fullscreen. Scroll within the table to see all the rows and columns. See notes below the table. Any corrections, additions or feedback? Email us.

Product Name AC THOR i AC THOR 9S Blue Catch Power Fronius Ohmpilot Green Catch Power Paladin-2  SolarEdge Smart Energy SunMate 
Product Image AC Thor i AC Thor i Catch blue Fronius Ohmpilot Green Catch Paladin SolarEdge SunMate
In-Depth Analysis Not yet Not yet Yes, here Yes, here Yes, here Yes, here Not yet Yes, here
Price (RRP + GST, unless otherwise stated) $1,685  $2,007 $1,700 (single phase) $1,950 (three phase) $1,320 $900 Installed $790

$1,250

$850 (Single phase)

$1,250 (Split/three phase)

Website here here here here here here here here
Maximum heating element capacity 3kW 9kW 4.8kW (7.2kW three-phase variant) 3kW (single phase) /9kW (three phase) 4.8kW 6kW 4.8kW 3.6kW Variable up to 12kW threshold through contactors
Number of heating load outputs 1 output + Relay output 3 outputs + Relay output 1 1 (single phase) 3 (three phase) 1 2 + 4 off PC app 1 2 in variable output mode
3 when utilizing variable and threshold mode. (output 1 variable, output 2 and 3 threshold (on and off)
Sensor connection (Wireless/Wired?) Option 1: Connection via Router
 
Option 2: Direct connection (wired)
 
Option 3: Connection via powerline
 
Not required when controlled by inverter or EMS
 
Not required in off-grid
Option 1: Connection via Router
 
Option 2: Direct connection (wired)
 
Option 3: Connection via powerline
 
Not required when controlled by inverter or EMS
 
Not required in off-grid
Wireless communication between the Communicator and the Diverter Wired N/A Wired CT's Wireless Wired and wireless options available for both single and multi phase
Control method PWM (pure sine) PWM (pure sine) Burst Fire PWM Burst Fire Variable PWM @ 50Hz (SSR) TBD PWM
Works with a time-of-use tariff's off-peak rate? Yes Yes Yes Yes Yes No TBD Yes
IP Rating IP20 – external enclosure for IP65 rating costs extra IP20 – external enclosure for IP65 rating costs extra 2X (no protection specified against water) IP54 2X (no protection specified against water) No – must be installed away from elements on in its own box IP65 Not IP rated, IP rated cases can be purchased as an extra if needed.
Ambient temperature range 0 – 40˚C 0 – 40˚C -5 to 50 deg C 0 – 40 deg C -5 to 50 deg C Up to 50 deg C -10 to +50 deg C No current limitations
Special features? Works On-grid and Off-grid (supports frequency shift)
 
Cloud Monitoring and remote control
 
Compatibility with many manufacturers (EV chargers, smart home, battery, inverter, etc) and different communication protocols (e.g. modbus TCP/IP)
Works On-grid and Off-grid (supports frequency shift)
 
Cloud Monitoring and remote control
 
Compatibility with many manufacturers (EV chargers, smart home, battery, inverter, etc) and different communication protocols (e.g. modbus TCP/IP)
Internet connectivity for weather forecasting Monitoring through Fronius solar.web – can see performance all in one place No No Monitoring through SolarEdge app No
Weight 1.5kg including lead 1.3kg <1kg 3.9 kg <1kg 1.2 kg 5.3kG 600g
Dimensions (mm) 135 x 195 x 65 mm 135 x 195 x 65 mm 150x70x120mm
Communicator; 150x70x10mm
350 x 280 x 110 mm 150x70x120mm 240 x 120 x 120 mm 375mm x 240mm x 110mm 198 x 132 x 68 mm
Standby power <1.5W <2W <5W 1.8W <5W <5W <5W 5W
Warranty 2+3 Years 2+3 Years 5 years 2 years 5 years 2 years 5 years 5 years
Warranty doc supplied? Yes Yes Yes Yes Yes No Yes Yes
Spec sheet supplied? Yes Yes Yes Yes Yes No Yes Yes
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Notes

Maximum heating element capacity: The highest capacity hot water system heating element the diverter can be used with.  (Water heating elements normally come in the following capacities: 1.8, 2.4, 3.6, and 4.8 kilowatts.)  

Number of heating load outputs: Most people will only want to use their diverter for hot water and nothing else.  However, if you have a second hot water system you want to use on the same diverter, or potentially something else with an appropriate heating element, such as a bar heater or floor heating, then you'll want two heating load outputs.

Sensor Connection:  All diverters have a sensor that goes just before or just after the electricity meter so it can tell if surplus power is being generated.  Some have a sensor that is connected to the diverter with a wire, while others have the option of a wireless connection.

Control Method: The controllers chop up the AC waveform to regulate how much electrical power is transferred into heating power. There are various ways to do this 'chopping' as described by this row.

Special features/Internet connectivity: Internet connected PV diverters can access weather forecasts in order to intelligently control their operation for maximum solar self-consumption.

We plan to update this table frequently as more products become available, and specifications and prices of existing solar diverters change. Please note the prices listed above are just a general guide.


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