Precision air conditioning unit for indoor installation

TelAir units are designed for installation in telecommunication containers and equipment rooms. As they are installed indoors, noise is kept to a minimum and the units are protected against environmental influences and vandalism.

Solutions for TelAir units

  • Shelter cooling

  • Small Data Centers

  • Modular Data Centers

  • Direct Free Cooling

  • Equipment rooms

  • For use in telecommunications, infrastructure, facilities, broadcasting



  • Innovative technology and high-quality components for low energy consumption

  • Low refrigerant quantity (less than 10 tons CO2 equivalent)

  • No annual leak test required in accordance with F-gas regulation*

    *due to low refrigerant quantity and hermetically sealed refrigerant circuit (standard for EC compressor)

  • Suitable for residential areas due to low noise emissions

  • Plug and play and therefore immediately ready for connection and use

  • Indoor installation keeps units protected against environmental influences and vandalism

  • Connectivity: Monitoring and remote access available via a web interface

  • Backup operation (Free Cooling and backup cooling) on failure of the main power supply

Technical Data

Cooling capacity total (kW)

4 - 16



Air conduction

Upflow, Downflow, Displacement


R410A (GWP: 2,088)

R407C (GWP: 1,774)

R134a (GWP: 1,430)


Direct Free Cooling

With Free Cooling, the units achieve savings of up to 83 % on running costs.

Free Cooling

  • Uwe Kudszus, Product Manager

    "With our series of TelAir units, we offer three models for indoor installation, all with different air conduction. This device series has proven its worth in cell phone containers around the world, and is now increasingly popular in small Data Centers, too."

Flexibility thanks to variable air conduction

The individual models of the TelAir series are available as Upflow, Downflow and Displacement versions. In the Displacement model, the airflow can be directed horizontally or vertically entirely individually as required via adjustable fins, to ensure optimum operation of your servers.



  • Factory tested, filled with refrigerant and ready for operation from the very first day

  • Downflow, upflow and displacement principle

  • Condensation pressure control

  • Outside air conditions: –20/+50 °C winter/summer

  • Automatic restart after power failure

  • Refrigerant R407C

  • Filter monitor and airflow alarm

  • Inside and outside temperature sensors

  • G4 zigzag filter

  • Condenser with microchannel technology


Control and monitoring

The C2020 consists of a controller and an optional operator terminal. The controller controls all the functions of the TelAir 2 unit. The operator terminal, consisting of a keypad and LCD, displays the most important operating states and alerts.


  • The C2020 enables up to ten units to be configured in a single air conditioning system. If an individual unit drops out or the heat load rises, the standby unit is switched in for additional support

Night mode

  • Time-controlled limitation of the condenser and evaporator fan speed for quiet operation
  • Energy-saving mode

Monitoring and alarm relaying

  • Via BMS systems 
  • Nine potential free contacts are available: Alarms can be assigned a high or low priority
  • Via GSM modem 

Simple configuration and software updates

  • Central configuration of units from a laptop
  • Hardware key for uploading and downloading software without a laptop 

Brochure for Download

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Contact us

Holsteiner Chaussee 283
22457 Hamburg 

Central Office: +49 40-5585-0
Fax: +49 40-5585-352

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