Because it's not enough to just build the best plants

Customised service for reliable operation

From maintenance services through qualified consulting and training to 24-hour hotlines: with service that goes far beyond the usual, we support you even after plant installation.

Training and ongoing education of your plant personnel

The correct operation of the installed systems plays a key role in ensuring that they function smoothly. This is why H+E offers personnel training courses tailored to your employees and your plant. Please give us a call to discuss your individual package or send us an email.

Phone: +49 711 7866-309

24-hour hotline

Our customer service technicians will answer your questions quickly and expertly over the phone and will put you in touch with the right contact person for complex issues.

H+E also offers on-site service on request.

Maintenance service

  • Regular maintenance for a constant water quality
  • Professional support by qualified H+E personnel
  • Fine-tuning and adaptation to altered operating conditions, such as inflow values and limit values
  • Support of third-party plants
  • Calibration service
  • Remote monitoring of your plant

Spare parts inventory

  • Manufacturer-independent procurement
  • A fair price for the optimal product
  • Delivery right on time after coordination with you
  • Consignment stock: warehousing at the customer site, invoicing only after removal of the goods
  • Search for suitable replacement components
  • Organisation of the export to any desired destination country

Optimisation and modernisation of existing plants and third-party plants

  • From planning and material procurement to on-site construction management
  • Modernisation of control and automation systems
  • Conversion or renewal of dosing equipment and storage tanks for chemicals
  • Field trials and adjustment of chemical dosing during operation
  • Modernisation concepts with parts exchange
  • Coordination of suppliers


  • Resin analysis
  • Water analysis, DOC, solids analysis with evaluation (on site, laboratory)
  • Further analyses on request

Qualified consulting

  • Carrying out plant audits to determine the condition of the plant
  • Consulting services for process optimisation
  • Consulting services for plant optimisation

Special service for anaerobic reactors

  • Functional testing and maintenance prior to official inspection and approval
  • Process review and recommendations for performance improvement
  • Individual process steps: reactor, desulphurisation or flare

Servo – bundled expertise in chemicals and operating materials


  • For all process technologies and process steps
  • Cleaning chemicals
  • Precipitants, flocculants and defoamers
  • Nutrients and trace elements
  • Hardness stabilisers and dispersing agents
  • Anti-corrosion fluids
  • Antiscalants
  • Heat transfer fluids and antifreeze agents