What is SlabTank RainHarvester Auto?

SlabTank RainHarvester Auto is an automatic rain-to-mains water supply system that delivers stored rainwater to your home or site, and switches to mains water when levels run low.

It works with SlabTank using a pump, float switch, and control valve to manage supply without manual intervention.

Rainwater is prioritised when available. When it’s not, the system automatically brings in mains water to maintain consistent pressure and flow.

Everything is pre-configured to work together, making it simple to specify, install, and operate.

The System At A Glance

Why SlabTank RainHarvester Auto?

Rainwater systems often come with trade-offs.
Manual changeovers, and general uncertainty around what happens when the tank runs dry.

It adds complexity to something that should be simple.

SlabTank RainHarvester Auto was developed to remove that friction.

It creates a single, automatic system that prioritises rainwater, maintains reliable supply, and removes the need for user intervention or workarounds on site.

No switching between systems.
No second-guessing water levels.
No compromise on performance.

Just a consistent, compliant water supply that works in the background.

How SlabTank RainHarvester Auto Works

SlabTank RainHarvester is designed to operate automatically once installed, managing the supply of rainwater and mains water without any user input.

Rainwater is drawn from the SlabTank and supplied to the home or site through the pump system. When tank levels drop, the system automatically switches to mains water to maintain consistent pressure and flow.

As the tank refills, the system switches back to rainwater.

All components are configured to work together, ensuring a reliable, compliant water supply from day one.