Hot Water Diverter Comparison Table

Last updated: December 2018

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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Product Name Fronius Ohmpilot Paladin-2  Green Catch Power Blue Catch Power SunMate 
Product Image Fronius Ohmpilot Paladin Green Catch Catch blue SunMate
In-Depth Analysis Yes, here Yes, here Yes, here Yes, here Yes, here
Price (RRP + GST, unless otherwise stated) $1,320 $790 $900 Installed $1,700 (single phase) $1,950 (three phase)

$850 (Single phase)

$1,250 (Split/three phase)

Website here here here here here
Maximum heating element capacity 3kW (single phase) /9kW (three phase) 6kW 4.8kW 4.8kW (7.2kW three-phase variant) 3.6kW Variable up to 12kW threshold through contactors
Number of heating load outputs 1 (single phase) 3 (three phase) 2 + 4 off PC app 1 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?) Wired Wired CT's N/A Wireless communication between the Communicator and the Diverter Wired and wireless options available for both single and multi phase
Control method PWM Variable PWM @ 50Hz (SSR) Burst Fire Burst Fire PWM
Works with a time-of-use tariff's off-peak rate? Yes No Yes Yes Yes
IP Rating IP54 No – must be installed away from elements on in its own box 2X (no protection specified against water) 2X (no protection specified against water) Not IP rated, IP rated cases can be purchased as an extra if needed.
Ambient temperature range 0 – 40 deg C Up to 50 deg C -5 to 50degC -5 to 50degC No current limitations
Special features? Monitoring through Fronius solar.web – can see performance all in one place No No Internet connectivity for weather forecasting No
Weight 3.9 kg 1.2 kg <1kg <1kg 600g
Dimensions (mm) 350 x 280 x 110 mm 240 x 120 x 120 mm 150x70x120mm 150x70x120mm
Communicator; 150x70x10mm
198 x 132 x 68 mm
Standby power 1.8W <5W <5W <5W 5W
Warranty 2 years 2 years 5 years 5 years 5 years
Warranty doc supplied? Yes No Yes Yes Yes
Spec sheet supplied? Yes No Yes Yes Yes
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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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