The Klargester AquaHarvest Domestic 3100L Rainwater Harvesting System is an advanced direct-feed rainwater recycling solution designed to help homeowners significantly reduce mains water consumption while lowering utility costs. Ideal for modern homes where installing a header tank is impractical, such as properties with converted loft spaces or limited roof voids, the AquaHarvest delivers filtered rainwater directly from the underground storage tank to connected appliances at mains pressure.
Engineered for efficiency, reliability and sustainability, the AquaHarvest 3100L captures, filters and stores rainwater for everyday non-potable household applications. By utilising naturally collected rainwater, homeowners can reduce their dependence on treated mains water while supporting environmentally responsible water management practices.
Why Choose the Klargester AquaHarvest 3100L?
The AquaHarvest system combines intelligent design with premium components to ensure dependable performance throughout the year. Featuring an integrated Grundfos intelligent pump, advanced multi-stage filtration and automatic mains water backup, the system provides a continuous and reliable water supply whenever demand arises.
Its compact design is suitable for shallow dig installations, making it a practical solution for a wide range of domestic projects, including new builds, renovations and self-build developments.
Key Features & Benefits
- 3100 litre underground rainwater harvesting tank
- Delivers rainwater directly to appliances without requiring a header tank
- Ideal for homes with converted lofts and restricted roof space
- Fully compliant with EN 16941-1:2018 rainwater harvesting standards
- Intelligent Grundfos pump for reliable automatic operation
- Easy-to-read control display with water supply status monitoring
- Early fault warning system for enhanced reliability
- Calmed inlet design minimises disturbance of settled particles
- Suitable for shallow excavation installations
- Automatic mains water top-up prevents the system from running dry
- Provides water at mains pressure or higher
- Reduces household water consumption and utility bills
Suitable Applications
The Klargester AquaHarvest harvested rainwater is ideal for:
- WC flushing
- Urinal flushing
- Garden watering
- Irrigation systems
- Landscape maintenance
- Vehicle washing
- Domestic laundry
How Much Water Can You Save?
A typical four-bedroom home uses approximately 222 litres of water per day, with around 30% used for toilet flushing and a further 7% used outdoors. By replacing treated mains water with harvested rainwater for these applications, a household could save up to 30,000 litres of drinking-quality water per year, helping to reduce both water bills and environmental impact.
How the AquaHarvest Rainwater Harvesting System Works
Rainwater is collected from your property's roof and passes through an inline leaf filter before entering the storage tank. Additional filtration occurs at the pump inlet, followed by fine filtration supplied as part of the system, ensuring clean water for domestic non-potable use.
The integrated Grundfos intelligent pump automatically detects demand through pressure changes within the system and delivers harvested rainwater directly to connected appliances. When rainwater levels become low, the AquaHarvest automatically introduces a controlled amount of mains water to maintain operation and protect the pump from running dry.
The result is a highly efficient, low-maintenance rainwater harvesting system that provides a dependable alternative water source while helping households reduce water consumption and improve sustainability.
