Rainwater Harvesting Controllers

We understand how to manage and control rainwater for use in your home, farm or business premises. Whether you want to be totally off grid in your water use or expect to top-up your harvested rainwater with mains water we have a controller that is suitable for you.

Electronic Mains Water Top-up Kit with Pump Isolation and Alarm


Automatic mains water top-up Controller kit for rainwater tanks with pump isolation and alarm. Incorporates electronic leak detection routine, preventing undue consumption of mains water. This is our top seller for domestic systems, thousands sold in the UK since 2003.

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24V Rainwater Header Tank Controller

TCS6JB Series – Low Voltage Top-up Switch

The TCS6JBL Low Voltage Top-up Switch is intended to ensure the availability of water in a rainwater header tank by controlling a pump operating at mains voltage and a solenoid operating at 24 volts.


Advanced Direct/Top-up Rainwater Controller

Rainforce T Series – For systems with no header tank, but are direct feed, pressurised systems

The 3P RainForce T Series commercial Rainwater Controller performs all the functions you would expect of a commercial system such as adjustable pressure, duty standby/assist and BMS output, whilst remaining extremely compact. Pressure control is achieved by modulation of the pumps which are run as required to maintain pressure within a specified range, avoiding the loss of efficiency associated with variable speed systems when running at low demand.

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Advanced Header Tank Rainwater Controller

Rainforce H Series – For water systems with a header tank

The 3P RainForce H series commercial Rainwater Controller performs all the functions you would expect of a commercial indirect system such as multiple pump control, duty standby, BMS output, whilst remaining extremely compact. Header tank level control control is achieved by software with the emphasis on providing maximum availability of water without the efficiency losses associated with ball cocks, or the reliability problems of a float switch based system.

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