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Heating water treatment according to VDI 2035

Heating water treatment

The requirements for your water treatment system are as unique as each industry is individual.
At EnviroFALK, you will be advised by experts who know your specific areas of application inside out.

Heating water according to VDI 2025

Corrosion, deposits and system failures: Consequences of too much hardness and oxygen in the circulation water of heating systems. However, they can all be avoided if you decide to use modern systems for heating water treatment made by EnviroFALK. With us at your side, you can effectively secure the heat supply for your customers and at the same time comply with the guidelines of the
VDI 2035
to the full extent. This is because the majority of boiler manufacturers use VDI 2035 as the basis for their warranty conditions. If the heating fill water is not treated, the warranty will become void.

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Heating water treatment with EnviroFALK

Why EnviroFALK? Heating and plumbing companies benefit from our cooperation in several ways!

  • Heating water quality in accordance with the “VDI 2035” guideline
  • Optimum heating water treatment for the respective circuit, perfectly matched to the size of the property
  • Highly effective special resin: durable, sustainable and economical
  • Fully automatic filling, treatment or pH value adjustment of heating water with mobile trolley HKEF 1500 – also available for rent or for fixed installation with wall bracket
  • Safe, punctual and fast regeneration service for ion exchangers with pick-up and delivery service throughout Germany – directly to your customers.

Our products for heating water treatment

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Envi GreenLINE analog

Envi GreenLINE analog The analogue conductivity meter is mounted on a T-piece (PP) and can be connected directly to all standard...

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    Envi GreenLINE digital 200-0.1/200-1.0

    Envi GreenLINE digital 200-0.1/200-1.0 The digital conductivity meter is installed in a high-quality surface-mounted housing and allows flexible wall mounting. Precise conductivity...

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      Envi GreenLINE digital

      Envi GreenLINE digital The digital conductivity meter is mounted on a T-piece (PP) and can be connected directly to standard ion...

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        Envi GreenLINE C 900

        Envi GreenLINE C 900 The GreenLINE C 900 digital conductivity meter is ideal for quality control for online measurement of pure...

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          Envi GreenLINE C 50

          Envi GreenLINE C 50 The analogue conductivity meter GreenLINE C 50 offers simple and precise conductivity measurement for permanent quality control...

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            Water monitor

            Water monitor The complete unit for effective protection against water damage combines a control unit, solenoid valve and a sensor...

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              Pressure reducer

              Pressure reducer A pressure reducer ensures maximum safety and efficiency in water technology systems. It reliably protects against excessive supply...

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                Systemtrenner Flanschanschluss

                System separator flange connection In accordance with DIN EN 1717 and DIN 1988, Part 4, the system separator prevents liquids...

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                  Systemtrenner

                  System separators In accordance with DIN EN 1717 and DIN 1988, Part 4, the DVGW-tested system separator prevents liquids from...

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                    Differenzdruckschalter

                    Differential pressure switch The differential pressure switch controls the backwashing process of the fine filters in conjunction with the automatic...

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                      Rückspülautomatik für Feinfilter

                      Automatic backwash system for fine filters For fully automatic, time-controlled cleaning of all backwashable fine filters. Interval setting via integrated...

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                        Feinfilter rückspülbar

                        Fine filter can be backwashed Safe protection in accordance with DIN/DVGW against coarse particles, suspended matter or other undissolved substances...

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                          Envi GreenPURE S 120-500

                          Envi GreenPURE S 120-500 The compact GreenPURE S reverse osmosis systems are space-saving, ideal for applications with limited space and a...

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                            Envi GreenPURE L Ultra 80-350

                            Die kompakten Wasseraufbereitungssysteme GreenPURE HS Ultra sind für die Entsalzung von enthärtetem Trinkwasser konzipiert.

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                              Envi GreenPURE MX Ultra 3000-7500

                              Die kompakten Wasseraufbereitungssysteme GreenPURE HS Ultra sind für die Entsalzung von enthärtetem Trinkwasser konzipiert.

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                                UV-Anlagen

                                UV systems For the continuous inactivation of microorganisms and viruses. No use of chemicals or mercury-based lamps. Chemical-free disinfection with high...

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                                  Envi GreenPARTS Tank rechteckig

                                  Envi GreenPARTS Tank, rectangular PE storage tank with dome and flange Space-saving solution for pure water storage The rectangular PE tanks from EnviroFALK...

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                                    Envi GreenPARTS Tank PP

                                    Envi GreenPARTS Tank, round in PP Ideal for higher temperatures and aggressive media - durable and chemical-resistant thanks to PP. For demanding...

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                                      Envi GreenLINE Ionenaustauscher IA

                                      Envi GreenLINE Ion exchanger IA Pressureless ion exchange system with replaceable plastic cartridge and integrated LED measuring device. Compact ion exchanger solution...

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                                        VE-WASSER to GO 0,33l-Dose

                                        Mit der neuen VE-Dose von EnviroFALK bringen wir hochreines, vollentsalztes Wasser dorthin, wo es sonst nicht hinkommt: direkt in die Hand.

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                                          Reinstwassersystem HALIOS

                                          Reinstwasser auf Knopfdruck! Mit dem HALIOS-System wird vorbehandeltes Wasser zuverlässig zu Reinstwasser Typ 1 aufbereitet.

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                                            Reinstwassersystem HALIOS 6, 12, 40

                                            Das Reinstwassersystem HALIOS mit externem Dispenser ist für den direkten Anschluss an das Trinkwassernetz konzipiert.

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                                              Envi GreenPURE Triton

                                              The ultrapure water system for small requirements! The TRITON has a modular design and offers a high degree of flexibility to adapt to your specific requirements.

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                                                AGUASAVE water treatment module

                                                AGUASAVE water treatment module The modules in the AGUASAVE family are suitable for systems of all sizes. From single-family homes...

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                                                  Envi GreenPURE Halios

                                                  Ultrapure water for critical applications. The laboratory water system, PURE-LINE HALIOS with the external dispenser and PURE-LINE HALIOS ID with the integrated dispenser for monitoring all parameters, offers space-saving installation.

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                                                    Ion exchangers for industry

                                                    Ion exchangers for full and partial water demineralization are indispensable in many industrial processes. Well-known companies rely on our...

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                                                      Ion exchanger service for commercial kitchens

                                                      Partially and fully demineralized water, which is often treated using cartridges, is a decisive quality factor for guaranteed taste,...

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                                                        GAHOtech multi

                                                        GAHOtech multi MULTIfunctional unit - one system for the entire kitchen. The GAHOtech multi-talent for commercial kitchens combines high-quality technology...

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                                                          Ion exchanger service for heating water

                                                          Protect heating systems - economically and environmentally friendly! You can also benefit from our range of ion exchangers for...

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                                                            Ion exchanger service for toolmaking

                                                            Galvanic rinsing water, process, pickling and cleaning baths often contain various chemical substances and metals that are highly toxic....

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                                                              EnviModex filter bags

                                                              Patented filter system offers reliable filtration Separation of solids and liquids. The fabric bag for sludge dewatering is supplied with eight...

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                                                                Ion exchanger service for laboratory & medical technology

                                                                You know it yourself: Water, which is often treated using ion exchangers, is a decisive quality factor in cleaning,...

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                                                                  Envi GreenPURE MX-A Reversible can

                                                                  Envi GreenPURE MX-A 3800-12.000 The MX-A series water treatment systems have been specially designed for use with hardness-stabilised city water. They...

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                                                                    Make-up units for fixed installation

                                                                    Make-up units for fixed installation Our make-up units in accordance with VDI 2035 already contain all the components and connection...

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                                                                      GAHOtech clean

                                                                      GAHOtech clean Clean water guarantees shiny dishes, stain-free glasses and protection for dishwashers. GAHOtech clean is the indispensable water treatment...

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                                                                        Envi GreenPURE MX 4300 - 10000

                                                                        Envi GreenPURE MX 4300-10.000 The MX series water treatment systems have been specially designed for use with softened city water. They...

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                                                                          HKEF 1500

                                                                          HKEF 1500 Fully automatic system for the preparation of heating and cooling circuits. With the HKEF 1500, you can monitor...

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                                                                            AGUACLEAN filtration module

                                                                            AGUACLEAN filtration module The use of AGUACLEAN is highly recommended when renovating or modernizing the heating system (e.g. replacing the...

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                                                                              Envi GreenPURE Ultra RG 500-2000

                                                                              Envi GreenPURE RG Ultra 500-2000 The GreenPURE RG Ultra reverse osmosis systems with electrodeionisation (EDI) offer particularly high ultrapure water quality...

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                                                                                Envi GreenPURE L 800-1500

                                                                                Envi GreenPURE L 800-1500 The compact GreenPURE L reverse osmosis systems are efficient and space-saving, ideal for applications with limited space...

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                                                                                  Envi GreenPURE HS Ultra

                                                                                  Envi GreenPURE HS Ultra The compact GreenPURE HS Ultra water treatment systems are designed for Desalination of softened drinking water. They...

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                                                                                    AQUAform PST

                                                                                    AQUAform PST AQUAform PST systems are used when the highest deionization performance is required, e.g. for hard metal cutting or...

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                                                                                      Filter & Sterilfilter

                                                                                      Filter & fine filter Pressure-resistant filter housing made of plastic or stainless steel, incl. filter cartridges for coarse filtration of...

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                                                                                        Envi GreenLINE Ionenaustauscher XXL

                                                                                        Envi GreenLINE Ion exchanger XXL Sometimes size does matter! The cartridge consists of a GRP container, incl. distributor system and filter...

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                                                                                          Envi GreenLINE Ionenaustauscher Kunststoff

                                                                                          Envi GreenLINE Plastic ion exchanger Pressure-resistant ion exchanger made of GRP, ready for direct connection incl. internal lance system. For the...

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                                                                                            Envi GreenLINE Ionenaustauscher Edelstahl

                                                                                            Envi GreenLINE Ion exchanger Stainless steel Pressure-resistant ion exchanger made from high-quality stainless steel. Pressure-resistant quality for reliable demineralised water production The stainless...

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                                                                                              TOC Messgerät

                                                                                              Envi GreenPARTS TOC Measuring device The online TOC measuring device is used for highly sensitive measurement of the concentration of total...

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                                                                                                UV-Anlagen zur TOC-Reduzierung

                                                                                                UV systems for TOC reduction For the oxidation of organic carbon and continuous inactivation of microorganisms and viruses. No use of...

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                                                                                                  Envi GreenPARTS Tank PE

                                                                                                  Envi GreenPARTS Tank, rund aus PE For optimum storage of pure water - made of high-quality, UV-resistant PE. Safe pure water storage...

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                                                                                                    Envi GreenFLOW D

                                                                                                    Envi GreenFLOW D The ready-to-connect pressure boosting systems with frequency-controlled stainless steel pumps are supplied mounted on a frame. The systems...

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                                                                                                      Envi GreenFLOW E

                                                                                                      Envi GreenFLOW E The ready-to-connect GreenFLOW pressure boosting systems with frequency-controlled stainless steel pumps are mounted on a compact frame. They...

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                                                                                                        Envi GreenFLOW K

                                                                                                        Envi GreenFLOW K The GreenFLOW K can be used universally for flexible applications and delivers a constant water pressure at all...

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                                                                                                          Envi GreenSOFT Doppelenthärter MC-N 2C

                                                                                                          Envi GreenSOFT Doppelenthärter MC-N 2 C With its two control heads, the MC-N 2C double softener offers an additional advantage in...

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                                                                                                            Envi GreenSOFT Doppelenthärter MC-N 2CT

                                                                                                            Envi GreenSOFT Double softener MC-N 2 CT Continuous water flow: A softener with only one GFK cartridge can interrupt the water...

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                                                                                                              Envi GreenSOFT Einzelenthärter MC-N C

                                                                                                              Envi GreenSOFT Single softener MC-N C Different capacities depending on consumption and water hardness. Flexible softening for variable requirements The individual softeners in...

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                                                                                                                Envi GreenSOFT Doppelenthärter Gestell

                                                                                                                Envi GreenSOFT Frame configurator The EnviroFALK MC-N 2 CT and MC-N 2 C water softeners are available as fully constructed and...

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                                                                                                                  GAHOtech drink

                                                                                                                  GAHOtech drink Food and drinks retain their full flavour and natural colour thanks to GAHOtech drink water treatment. This ensures...

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                                                                                                                    GAHOtech soft

                                                                                                                    GAHOtech soft Hard water causes boiler scale and leads to calcification of appliances, systems and heating elements. GAHOtech soft is...

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                                                                                                                      AQUAform

                                                                                                                      AQUAform Our AQUAform systems treat demineralised water in the circuit of wire EDM machines. The quality resin mixture used in...

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                                                                                                                        Envi GreenPURE HS/HSC 120-400

                                                                                                                        Envi GreenPURE HS/HSC 120-400 The compact Envi GreenPURE HS and HSC water treatment systems are designed for connection to the mains...

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                                                                                                                          Envi GreenPURE UT 120

                                                                                                                          Envi GreenPURE UT 120 Our GreenPURE UT 120 reverse osmosis system with integrated tank offers a reliable and efficient solution for...

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                                                                                                                            Envi GreenPURE K 60-200

                                                                                                                            Envi GreenPURE K 60-200 The compact GreenPURE K reverse osmosis systems are efficient and space-saving, ideal for applications with special purity...

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                                                                                                                              Testomat 808 Härte-Analysegerät

                                                                                                                              Testomat® 808 Hardness analyser The Testomat® 808 is a compact analyser for online measurement of water hardness according to the principle...

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                                                                                                                                Testomat EVO TH Härte-Analysegerät

                                                                                                                                Testomat® EVO TH Hardness analyser The Testomat® EVO uses titration to determine the water hardness (residual total hardness) fully automatically. The smart...

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                                                                                                                                  Resthärtekontrollgeräte ASC

                                                                                                                                  ASC residual hardness controller For continuous monitoring of the function of the water softener and to protect downstream systems against...

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                                                                                                                                    Envi GreenSOFT Einzelenthärter MC-N CK

                                                                                                                                    Envi GreenSOFT Single softener MC-N CK Connection-ready systems for the production of soft water. Compact softening for reliable water quality The ready-to-connect Envi...

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                                                                                                                                      Envi GreenFIL

                                                                                                                                      Envi GreenFIL Filter systems The filter systems with GRP cartridge are equipped with a central control valve. They are time-controlled backwashable...

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                                                                                                                                        Envi GreenPURE RG 2000-3000

                                                                                                                                        Envi GreenPURE RG 2000-3000 The Envi GreenPURE RG reverse osmosis systems are used to demineralise softened city water and to reduce...

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                                                                                                                                          Leitfähigkeitsmessgerät

                                                                                                                                          C 20 batteriebetrieben

                                                                                                                                          • VA-Patronen Art.-Nr. 340103
                                                                                                                                          • GFK-PatronenArt.-Nr. 340105

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                                                                                                                                          Customers & Solutions

                                                                                                                                          Stadtwerke Ulm: Demineralised water for district heating network

                                                                                                                                          Stadtwerke Ulm is converting the water as a heat transfer medium in the district heating network to low-salt operation with EnviroFALK ion exchangers during ongoing operation.

                                                                                                                                          To the reference

                                                                                                                                          News from EnviroFALK

                                                                                                                                          The EnviroFALK summer campaign 2025

                                                                                                                                          Now is the perfect time to enjoy summer. With everything that goes with it: sunshine, lightheartedness, and a smile on your face. And that's exactly what we want to give you! mehr lesen

                                                                                                                                          EnviroFALK birthday double pack

                                                                                                                                          35 years of EnviroFALK in Germany and 30 years in Switzerland - that was our anniversary celebration. mehr lesen

                                                                                                                                          Christmas will be GREEN this year!

                                                                                                                                          Our Christmas present? 500 trees that we plant together in spring. With our tree-planting campaign, we want to play our part in making our home sustainable and fit for the future. Because trees are true superheroes! mehr lesen

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                                                                                                                                          Good reasons to talk to us

                                                                                                                                          Filling, treating or adjusting the pH value of heating water circuits is child’s play with the HKEF 1500, the mobile and fully automatic system for heating water treatment from EnviroFALK – very practical on two castors with trolley function. And with the compact aluminum frame, you can get into any boiler room – downstairs and upstairs. The system monitors conductivity, temperature and system volume fully automatically. The HKEF is also available on a rental basis.

                                                                                                                                          With the HKEF 1500 for fixed installation with wall bracket, you can monitor the heating system 24/7. Conductivity, temperature and system volume pH value are permanently measured and the information processed. In the event of imbalances in the water, the HKEF reacts fully automatically and restores the optimum water quality completely independently.

                                                                                                                                          EnviroFALK ion exchanger cartridges are available in GRP and stainless steel in various sizes and flow rates between 300 and 2,500 l/h for filling, replenishing or treating heating circuit water. The special feature: Our cartridges are filled with special resin for perfect heating water. It is highly effective, but also significantly more durable. And: EnviroFALK does not provide you with an expensive disposable product for ion exchange. Once the resins are exhausted, they are simply reprocessed in our regeneration stations. This not only protects the environment, but also saves you unnecessary costs. Discover our regeneration service too.

                                                                                                                                          We are happy to support you. Whether it’s a detached house, residential complex or industrial and commercial premises, whether it’s refilling or temporary treatment of the water in the heating circuit: our product portfolio and range of services specifically for heating and plumbing companies take a lot of work off your hands. In other words: We roll up our sleeves for you so that you can focus even better on your core business. Sounds good? We think so too!

                                                                                                                                          Heating water treatment in accordance with VDI 2035 with a sustainable, economical and clever overall concept – is that exactly what you want? Then give us a call. Our experts will be happy to help you.

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