Hot Water Diverter Comparison Table

Last updated: December 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.


  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.

More PV diverter models

Product Name
    Product Name SunMate 

    Blue Catch Power

    • Blue Catch Power
    • Green Catch Power
    Fronius Ohmpilot

    AC THOR i

    • AC THOR i
    • AC THOR 9S
    SolarEdge Smart Energy
    Manufacturer Logo AWS logo Catch power Fronius MYPV SolarEdge
    Product Image SunMate PV Diverter Blue Catch Power Fronius Ohmpilot AC THOR i SolarEdge Smart Energy
    In-Depth Analysis Yes, here Yes, here Yes, here Not yet Not yet
    Price (RRP + GST, unless otherwise stated) $850 (Single phase) $1,250 (Split/three phase) $1,700 (single phase) $1,950 (three phase) $1,320 $1,430 (discounted price for >1 unit) $1,250
    Website Yes, here here here Here Here
    Maximum heating element capacity 3.6kW Variable up to 12kW threshold through contactors 4.8kW (7.2kW three-phase variant) 3kW (single phase) /9kW (three phase) 2x3kW 4.8kW
    Number of heating load outputs 2 in variable output mode 3 when utilizing variable and threshold mode. (output 1 variable, output 2 and 3 threshold (on and off) 1 1 (single phase) 3 (three phase) 1 output + Relay output 1
    Sensor connection (Wireless/Wired?) Wired and wireless options available for both single and multi phase Wireless communication between the Communicator and the Diverter 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
    Control method PWM Burst Fire PWM PWM (pure sine) TBD
    Works with a time-of-use tariff's off-peak rate? Yes Yes Yes Yes TBD
    IP Rating Not IP rated, IP rated cases can be purchased as an extra if needed. 2X (no protection specified against water) IP54 IP20 – external enclosure for IP65 rating costs extra IP65
    Ambient temperature range No current limitations -5 to 50 deg C 0 – 40 deg C 0 – 40˚C -10 to +50 deg C
    Special features? No Internet connectivity for weather forecasting Monitoring through Fronius solar.web – can see performance all in one place Works On-grid and Off-grid (supports frequency shift). Up to 11x ACTHOR (66kW) with 1 P. meter
    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)
    Monitoring through SolarEdge app
    Weight 600g <1kg 3.9 kg 1.5kg including lead 5.3kG
    Dimensions (mm) 198 x 132 x 68 mm 150x70x120mm Communicator; 150x70x10mm 350 x 280 x 110 mm 135 x 195 x 65 mm 375mm x 240mm x 110mm
    Standby power 5W <5W 1.8W <1.5W <5W
    Warranty 5 years 5 years 2 years 2+3 Years 5 years
    Datasheet Supplied? Yes Yes Yes Yes Yes
    Warranty Supplied? Yes Yes Yes Yes Yes
    More information on brand Here Here Here Here Here

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    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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