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Klargester AquaHarvest Domestic 3100L

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Direct Drainage Reviews

The Klargester AquaHarvest Domestic 3100L is a Direct System suitable for domestic applications where it is impractical to have a header tank, for example in homes that have converted attic spaces and less room. Therefore, filtered rainwater is pumped direct from the holding tank to the various appliances.

 Klargester AquaHarvest Domestic 3100L Installation Guidelines

 Klargester AquaHarvest Domestic 3100L Drawing

 Klargester AquaHarvest Specification

Klargester AquaHarvest Benefits

  • Suitable for shallow dig applications
  • Fully compliant against EN 16941-1:2018 standard (supersedes EN 8515) for peace of mind
  • Easy to read display panel included as standard, with early fault warnings and water supply status built in
  • Smart design featuring a calmed inlet at the bottom of the tank to prevent disturbance of any material at surface level
  • Features intelligent Grundfos pump for total reliability

AquaHarvest water suitable for 

  • WC and urinal flushing
  • Irrigation and landscape watering
  • Garden watering
  • Vehicle washing
  • Domestic laundry

How much water could you save with a Klargester rainwater harvester?

A 4 bedroom house typically uses 222 litre of water per day. 30% of this is generally used for flushing the toilet and 7% is outdoor use. Instead of using tap water, the AquaHarvest recycled water could save you paying for 30,000 litres per year. Better for you and the environment!

How does a rainwater harvester work?

Rainwater directed to the system is firstly filtered by an in line leaf filter, before further filtering on the pump inlet. Final fine filtration is catered for by the inline filter supplied as part of the kit. The Grundfos ‘intelligent’ pump has the necessary sensors to allow automatic operation when demand is called for by drop of pressure in the system. If the storage tank has a low level of rainwater, there is a small automatic charge of mains water into the tank to ensure the system never runs dry. The main advantage of this system is that rainwater is delivered to the appliances at mains pressure or higher.


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