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ALFILTRA DUPLEX water softener

 (51)

UVP €1,499.00 20%
€1,199.20
incl. VAT excl. shipping costs
 Available - Delivery between 2/16/26 and 2/18/26

Capacity in m³ x °dH

The capacity depends on your water hardness and water consumption. You can determine the capacity using our capacity calculator or this rule of thumb:

Water hardness rule of thumb
Medium-hard water (8–14 °dH) Number of people x 7.5
Hard water (14–21 °dH) Number of people x 10
Very hard water (over 21 °dH) Number of people x 12.5

Example (4 people with a water hardness of 20): 4 x 10 = 40

Sizing a water softener
20 (1-3 Pers.)

40 (2-5 Pers.)

60 (4-8 Pers.)

80 (bis 19 Pers.)

120 (bis 35 Pers.)

180 (bis 45 Pers.)

240 (bis 65 Pers.)

Montageservice

The installation service includes the professional installation of the water softening system by our trained technicians.
Included in the price are:

  • the installation of the terminal block

  • the connection to the sewage system

  • the commissioning of the plant

  • all necessary materials (e.g. two adapter pieces)

  • the journey within Germany

Further information and requirements
ohne

inkl. Montageservice

Connection accessories

Do you need a connection kit for installation?
Please select the appropriate option:

  • Without connection set:
    If you already have a suitable connection fitting and hoses and you do not need any new parts.

  • With connection set (without bypass block):
    If a bypass block is already installed but you need new hoses.
    Included are:

    • two flexible hoses for connection to the system

    • wastewater hose

    • Test set for residual hardness testing

  • With connection set (complete):
    If there is no connection yet.
    Included are:

    • Bypass block (connection fitting)

    • two flexible hoses for connection to the system

    • wastewater hose

    • Test set for residual hardness testing
ohne

inkl. Austausch-Set (ohne Bypass)

inkl. Anschluss-Set

Advice

Your advantages only with us

  • Excellent expertise for 20 years
  • Highest quality in every component
  • fair price-performance ratio
  • in-house, trained fitters
  • no risk through purchase on account (from 500 €)
  • Free shipping in Germany (from 250 €)
Advice

Contact
You can reach our customer service from Monday to Thursday from 9 a.m. to 5 p.m. and Friday from 9 a.m. to 3 p.m.

DUPLEX water softener

  • Two-column professional water softener for single-family and multi-family homes
  • Two water softener columns for uninterrupted soft water supply and optimal capacity utilization
  • ECO-INJECT salt-saving system saves up to 50% salt while maintaining virtually the same capacity.
  • Freely selectable capacity depending on your water hardness and consumption
  • Connections: 1" threaded fitting made of break-resistant, professional-grade plastic

Our DUPLEX twin-column water softener is ideal for very hard water and/or high water consumption.

This fully automatic, dual-column water softener with electronic, water-flow-controlled valve CLACK WS1-TT is easily installed upstream of your existing domestic water supply. The system utilizes the proven ion exchange process to completely remove hardness minerals and thus limescale from your tap water. Unlike our basic softeners, the duplex systems feature a second softening column. This ensures an uninterrupted supply of softened water, as the second column automatically takes over during the regeneration phase of the first. This is particularly advantageous in multi-family dwellings. An integrated safety float valve protects the salt container from overflow, and the fiberglass-reinforced pressure tank withstands pressure surges of up to 16 bar. Thanks to our sophisticated ECO-INJECT SYSTEM, the system saves up to 50% salt while operating at nearly maximum capacity.

Highlights

  • NEW: Electronically quantity-controlled CLACK WS1-TT
  • Two water softener columns for uninterrupted soft water supply and optimal capacity utilization
  • ECO-INJECT salt-saving system saves up to 50% salt while maintaining virtually the same capacity.
  • Freely selectable capacity depending on your water hardness and consumption (see above)
  • Connections: 1" threaded fitting made of break-resistant, professional-grade plastic
  • Residual hardness infinitely variable via optionally available connection block with blending device
  • Fiberglass-reinforced quality pressure tanks and separate salt container
  • Plug & Play - The system arrives at your home pre-programmed.
  • Built according to DIN-1988, NFS-certified heat exchanger resin
  • 2-year warranty (up to 7-year warranty with annual maintenance)

Scope of delivery

  • Ready-to-use double water softening system consisting of two pressure tanks filled with special high-performance ion exchange resin and the special control valve CLACK WS1-TT
  • separate brine tank (the separate design allows for better space allocation)
  • Safety float valve - Protects against system overflow
  • Operating and programming instructions

Please note: This unit is supplied without connection parts and without a drain hose. These can be found above under Accessories. You will also find information there about an installation service, should you require it.

If you would like to learn more about how water softening works and its benefits, please visit our information pages on water softening .

Installation and maintenance service for water softening systems

Alfiltra assembly team

Upon request, we will install your water softener in your apartment building for a fixed price anywhere in Germany. Thanks to our four locations, we can offer the installation service, including travel, at a competitive fixed price.

Here's how it works:

  • You can order the desired system including installation service in our online shop, by phone or by email.
  • To clear up any potential uncertainties, please send us a few photos of the installation location beforehand.
  • We will contact you by phone to arrange an appointment.
  • Our technician will professionally install the system at your location or in your building.

The Alfiltra quality promise

Highest quality

  • Our systems are made in Germany from our own production.
  • Carefully selected materials for durability and reliability
  • Up to 7 years warranty on selected systems with annual maintenance

Maximum safety

  • Pay conveniently and securely by invoice, without financial risk.
  • Positive customer reviews confirm the high level of satisfaction.
  • Quick and uncomplicated help should anything not be to your satisfaction

Competent team

  • Available throughout Germany for fast and competent service
  • Four locations guarantee personal support and fast response times.
  • If you have any questions or concerns, our support team is always available to help.

Installation and maintenance service for water softening systems

Alfiltra assembly team

If you wish, we can install your water softener at a fixed price within Germany. Thanks to our 4 locations, we can offer the installation service including travel at a reasonable fixed price.

This is how it works:

  • You order the desired system including installation service in our online shop, by phone or by email
  • To eliminate any possible ambiguities, please send us a few photos of the installation location in advance
  • We will contact you by phone to arrange an appointment
  • Our technician will professionally install the system for you

Installation and maintenance service for water softening systems

Alfiltra assembly team

Upon request, we will install your water softener for a fixed price anywhere in Germany. Thanks to our four locations, we can offer this installation service, including travel, at a competitive fixed price.

Here's how it works:

  • You can order the desired system including installation service in our online shop, by phone or by email.
  • To clear up any potential uncertainties, please send us a few photos of the installation location beforehand.
  • We will contact you by phone to arrange an appointment.
  • Our technician will professionally install the system at your location.
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PURA water softening system BASIC water softener DUPLEX water softener LEYCOsoft water softener with DVGW
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Price
UVP €699.00
as of â‚¬599.00
incl. VAT excl. shipping costs
 Available

UVP €999.00
as of â‚¬799.00
incl. VAT excl. shipping costs
 Available

UVP €1,499.00
as of â‚¬1,199.20
incl. VAT excl. shipping costs
 Available

as of â‚¬1,649.00
incl. VAT excl. shipping costs
 Available

Salt content (Max.)bis 75 kgbis 75 kgbis 100 kgbis 40 kg
Quantity-controlled regeneration
economical salting
residual hardness adjustable
safety swimmers -
Sloping sewage system -
quality components EU/USA-
Uninterrupted soft water supply-- -
app control---
DVGW certificate---

Kevin von Lieblingsessen über das Alfiltra Sorglospaket – Seine Erfahrungen und sein Fazit
Kevin von Lieblingsessen über das Alfiltra Sorglospaket – Seine Erfahrungen und sein Fazit

Kevin von Lieblingsessen_ – Bekannt aus diversen TV-Formaten und Stage-Koch der Offerta über das Alfiltra Sorglospaket ...

Duplex-Enthärtungsanlage fürs Mehrfamilienhaus installieren & in Betrieb nehmen – So funktioniert’s!
Duplex-Enthärtungsanlage fürs Mehrfamilienhaus installieren & in Betrieb nehmen – So funktioniert’s!

In diesem Video zeigen wir Ihnen ausführlich, wie Sie eine Duplex-Enthärtungsanlage von Alfiltra fachgerecht installieren…

A backwash filter should generally be present in every installation. This filters sediments and solids from the drinking water. If you don't have a pre-filter yet, please order one at the same time.
Primus F backwash filter for house connection 1''
Primus F backwash filter for house connection 1''
€189.00
incl. VAT excl. shipping costs
 Available

Primus FK backwash filter 1'' with pressure reducer
Primus FK backwash filter 1'' with pressure reducer
€209.00
incl. VAT excl. shipping costs
 Available

This water treatment system works with the ion exchange process. This means that salt is required to operate. How much salt the system needs depends on the water consumption and water hardness. You can calculate your salt consumption using our online calculator.
Salt tablets for water softeners and ion exchangers, 5 x 25 kg bags
Salt tablets for water softeners and ion exchangers, 5 x 25 kg bags
€74.00 (€0.59 / kg)
incl. VAT excl. shipping costs
 Available

This special solution of preservative and demineralized water ensures that the resin of your ion exchanger is refreshed. Use once a year or after the system has been shut down for a long time.
RESIN CLEAN resin cleaner for water softeners 1000 ml
RESIN CLEAN resin cleaner for water softeners 1000 ml
€19.90 (€19.90 / l)
incl. VAT excl. shipping costs
 Available

RESIN CLEAN resin cleaner for water softeners 5000ml
RESIN CLEAN resin cleaner for water softeners 5000ml
€89.00 (€17.80 / l)
incl. VAT excl. shipping costs
 Available

Ideal for connecting to an existing connection fitting. Please make sure to order two hoses (inlet and outlet).
Reinforced hose / flexible hose 1'' (75 cm long) for drinking water
Reinforced hose / flexible hose 1'' (75 cm long) for drinking water
as of â‚¬30.00
incl. VAT excl. shipping costs
 Available

Reinforced hose / flexible hose 1'' (100 cm long) for drinking water
Reinforced hose / flexible hose 1'' (100 cm long) for drinking water
as of â‚¬42.00
incl. VAT excl. shipping costs
 Available

Reinforced hose / flexible hose 1'' (150 cm long) for drinking water
Reinforced hose / flexible hose 1'' (150 cm long) for drinking water
as of â‚¬57.00
incl. VAT excl. shipping costs
 Available

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Accessories for water softening systems