Maximising Rainwater Usage in Your Backyard with Rain Mains Systems

With rising water costs and increasing focus on sustainability, more Australian homeowners are looking for smarter ways to make use of rainwater. But collecting rainwater is only half the solution, how you use it efficiently is what really makes the difference.

That’s where Rain Mains Systems come in—allowing you to maximise every drop collected and seamlessly integrate it into your home and backyard.

Why Rainwater Harvesting Matters

Rainwater is a free, natural resource, yet much of it is wasted as runoff.

By capturing and reusing rainwater, you can:

• Reduce reliance on mains water
• Lower water bills
• Keep your garden healthy year-round
• Improve overall water efficiency

However, without the right system, using rainwater effectively can be inconsistent and inconvenient.

What is a Rain Mains System? A Rain Mains System is designed to automatically manage the supply of rainwater and mains water to your home. REEFE’s RainPro systems: Supply rainwater when available Automatically switch to mains water when the tank is empty Ensure consistent pressure and flow throughout your property This means you get the benefits of rainwater without interruptions or manual switching. How It Works 1. Rainwater is collected in your tank 2. The pump delivers water to your home or garden uses 3. The system detects availability Uses rainwater when available Switches to mains water when the tank runs dry 4. Mains flow is restricted or stopped when rainwater is in use, helping conserve water The entire process is automatic—no monitoring required.

Key Benefits for Backyard & Household Use

✅ Maximise Every Drop of Rainwater

Rain Mains Systems prioritise rainwater usage before switching to mains supply, helping reduce overall water consumption.

✅ Fully Automatic Operation

• No manual switching
• Continuous water supply
• Seamless transition between sources

Perfect for busy households and hassle-free operation.

✅ Reliable, No-Electronics Design

REEFE systems use a 100% hydraulic valve set, meaning:

• No electronic controls
• No float switches or complex wiring
• Reduced maintenance and improved reliability

✅ Consistent Pressure for Everyday Use

Built-in pressure controllers ensure:

• Steady water flow
• Reliable operation across multiple fixtures
• Automatic restart after dry-run events

✅ Suitable for a Range of Applications

Rain Mains Systems can supply:

• Garden irrigation
• Toilets and laundry
• Full household supply (depending on model)
• Small commercial or site applications

Choosing the Right System for Your Property

REEFE offers different models depending on your needs:

	✅ RM4000-3, RM6000-3, RM7000-3, RM5000-3 Ideal for small homes, cabins, or granny flats Supports toilets, laundry, and light garden use
	✅ RM4000-4, RM6000-4, RM7000-4, RM5000-4 (20mm system) Designed for typical residential homes Suitable for 1–4 bathrooms Minimal pressure loss across mains supply
	✅ RM4000-5, RM6000-5, RM5000-5 (25mm system) Ideal for larger homes or higher demand applications Supports up to 5–6 bathrooms Higher mains flow capacity (up to 100L/min)

Where Rain Mains Systems Make the Biggest Impact

You’ll see the most benefit when:

• You already have a rainwater tank installed
• You often find you run out tank water
• You want to reduce mains water usage without compromise
• You need a reliable, automatic water supply system

Common Mistakes to Avoid

When setting up rainwater systems, avoid:

• Relying solely on manual switching
• Undersizing the pump for your home
• Ignoring pipe sizing (which can reduce pressure in larger homes)

Choosing the right system ensures consistent performance and long-term efficiency.

The Bottom Line

Collecting rainwater is just the first step—maximising its use is where the real value lies. A well-designed Rain Mains System ensures your backyard, garden, and home can make the most of available water without sacrificing convenience or performance.

By automatically balancing rainwater and mains supply, you get a smarter, more efficient way to manage water—helping reduce costs while supporting sustainable living.

Ready to Make the Most of Your Rainwater?

REEFE’s RainPro series is available through your local Irrigear Independent Expert.