RetroFit+

Modernize instead of buying completely new.

RetroFit+ modernizes existing ventilation units in line with requirements and is future-proof – without the need for a complete new purchase or long downtimes.

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Why replacing existing ventilation units can be expensive and problematic.

Existing ventilation units need to be replaced regularly because they are no longer fit for purpose in technical, energy or regulatory terms. However, the complete replacement brings new problems with it.

  • Technical condition and conformity of the device

    • Ventilation unit is too old
    • No longer meets legal requirements or standards
    • Device is defective
    • Prone to failures
    • Repairs take a long time

  • Energy efficiency and operating costs

    • High energy consumption
    • System is a power guzzler
    • High maintenance costs

  • System and future viability

    • Device cannot be connected to current building technology
    • Missing digital interfaces
    • Device is not future-proof

  • Problems with replacement

    • New ventilation unit does not fit into the structural conditions
    • New device is too expensive
    • With the new device, the entire system must be adapted
    • Replacement takes too long and operation remains at a standstill

  • Effects on operation and use

    • High downtimes and restrictions on ongoing operations
    • High dependency on repairs and spare parts

What RetroFit+ does

RetroFit+ systematically modernizes existing ventilation units – from analysis to commissioning.

  • Analysis and planning

    • On-site inspection of the devices with complete data acquisition
    • Air and power measurements incl.:
      • Static pressure increase
      • Electrical power consumption
      • External duct pressure
      • Checking V-belts and seals
      • Volume flow measurement according to DIN 12599
      • Recording the internal dimensions of the fan chamber incl. interfering contours
    • Measurement report with design of new fans or fan grids
    • Profitability analysis including amortization calculation
    • Customer interview and checklist for the needs analysis
    • Development of a modernization concept

  • Technical design and components

    • Use of direct-driven EC fans:
      • Electronic motor protection
      • Operating and fault message
      • Analog input 0-10 V
      • MODBUS interface for control and data acquisition
    • Pressure bulkhead made of galvanized 3 mm material, adapted to the system
    • Switch cabinet per air direction:
      • MODBUS display and control unit
      • Individual fuse, operating light, internal bus cabling
      • Integration into existing supply lines up to 4×20 mm²

  • Installation and commissioning

    • Dismantling and professional disposal of old fans
    • Hygienic closure of the openings
    • Mounting the fan wall with fans
    • Installation of volume flow and differential pressure measurement
    • Wiring the fans to the retrofit control cabinet
    • Cleaning and disinfecting the ventilation chamber
    • Commissioning incl. measurement of:
      • Power consumption
      • static pressure
      • Air volume
      • Parameterization of the fans

  • Handover and documentation

    • Instruction of operating and maintenance personnel
    • Preparation of the complete audit documents

  • Customer service

    • 24/7 support hotline
    • Technical queries
    • Troubleshooting
    • Spare parts management

  • Funding opportunities

    • Use of funding programs such as BAFA and KfW
    • Support with applications
    • Support with amortization and profitability calculations

Specific changes for system operators

RetroFit+ is effective where existing ventilation units cause high costs, uncertainty and restrictions. Modernization improves efficiency, operational reliability and future viability in a targeted manner – without the need for a complete new purchase.

  • Profitability and costs

    • Significant cost savings
    • Up to 50 % less energy consumption
    • Short amortization period of 2-3 years on average
    • Reduced maintenance costs
    • Use of funding programs

  • Operational safety and availability

    • Greater operational safety
    • Less downtime
    • Extended service life of existing devices

  • Energy efficiency and sustainability

    • Greater energy efficiency
    • Reduced CO₂ emissions
    • Compliance with current energy standards

  • Future viability and system integration

    • Future-proof, digital interfaces
    • Simple connection to existing systems

  • Comfort and quality in operation

    • Demand-oriented ventilation performance
    • Noise reduction
    • No rubber abrasion due to beltless drives

How RetroFit+ works in practice

RetroFit+ is used where existing ventilation units need to be modernized without replacing them completely.

Typical application situations

  • Existing ventilation units that no longer meet current energy or technical requirements
  • Appliances for which a complete replacement is not structurally, economically or operationally feasible
  • Modernization during operation
  • Appliances with high energy and maintenance costs
  • Devices with increasing susceptibility to failure

Typical users

  • Plant operator

    • Industry and trade
    • Public buildings
    • Health and care facilities

Ready to modernize your ventilation units?

RetroFit+ makes existing ventilation units efficient, economical and future-proof again. Without the need for a completely new purchase.

Request advice

For an initial assessment, we only need the basic device data.