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Rainwater Harvesting - Domestic Underground Tanks
DOMESTIC RAIN WATER HARVESTING SYSTEMS.
We supply a variety of underground tanks manufactured by Freerain ranging from 1800 to 10,000 litres. Our experience has shown them to be not only the best specification with self cleaning stainless steel filters and stainless steel pumps but the simplest system to install and maintain.
BENEFITS
- Save up to 50% of mains water demand.

- Approved for "CODE FOR SUSTAINABLE HOMES".
- WRAS Approved.
- Free delivery within 7 days.
- No concrete backfill required.
- Full technical support and 15 year Tank Warranty.
- Pumps are tank located, removing noise from the house.
- No tank joints to leak or assemble.
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DIRECT OR GRAVITY FED SYSTEM?
DIRECT SYSTEMS- The collected rain water is supplied from a pump within the tank directly to the pipework in the house. The water is pressurised at each appliance and the tank is topped up automatically in dry spells via a mains water connection in the control panel.GRAVITY SYSTEMS- The collected rain water is supplied from a pump within the tank which directly supplies a garden tap allowing it to be used in a hose pipe ban. The water is also distributed to a header tank (header tank not supplied) located in the roof space of the property providing gravity fed water to each appliance and the header tank is topped up automatically by mains water in dry spells. This system will continue to operate during a power failure.
STANDARD OR PRO SPECIFICATION?
The Freerain Pro systems include a higher specification pump, an LED water level indicator to monitor levels from within the house and a holiday protection shut off valve.
WHAT SIZE TANK DO I NEED?
Please either click on the link to calculate your tank size or contact us for assistance.
Open Tank SpecifierBuy Online
| Name | Description | Price (Ex VAT) | Buy |
|---|---|---|---|
| NON RETURN VALVE | SP | £133.04 | |
| REINFORCED TANK OPTION | SELECT FOR HIGH WATER TABLES |
£125.00 | |
| 1800 Ltr TANK - STANDARD | DIRECT SYSTEM | £1550.00 | |
| 1800 Ltr TANK - STANDARD | GRAVITY SYSTEM | £1550.00 | |
| 1800 Ltr TANK - PRO | DIRECT SYSTEM | £1950.00 | |
| 1800 Ltr TANK - PRO | GRAVITY SYSTEM | £1950.00 | |
| 2600 Ltr TANK - STANDARD | DIRECT SYSTEM | £1675.00 | |
| 2600 Ltr TANK - STANDARD | GRAVITY SYSTEM | £1675.00 | |
| 2600 Ltr TANK - PRO | DIRECT SYSTEM | £2075.00 | |
| 2600 Ltr TANK - PRO | GRAVITY SYSTEM |
£2075.00 | |
| 3400 Ltr TANK - STANDARD | DIRECT SYSTEM | £1800.00 | |
| 3400Ltr TANK - STANDARD | GRAVITY SYSTEM | £1800.00 | |
| 3400 Ltr TANK - PRO | DIRECT SYSTEM | £2200.00 | |
| 3400 Ltr TANK - PRO | GRAVITY SYSTEM | £2200.00 | |
| 4400 Ltr TANK - STANDARD | DIRECT SYSTEM |
£1950.00 | |
| 4400 Ltr TANK - STANDARD | GRAVITY SYSTEM | £1950.00 | |
| 4400 Ltr TANK - PRO | DIRECT SYSTEM | £2350.00 | |
| 4400Ltr - TANK - PRO | GRAVITY SYSTEM | £2350.00 |
Technical Data
Tank Dimensions -2400 Litre tank
Tank Dimensions -3500 litre to 6500 litre tank
Control Panel -Details
Direct System -Schematic
Direct System -Technical specification
Gravity System -Schematic
Gravity System -Technical specification
Installation instructions -General installation details
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