OpEx can be reduced by up to 90%.

Free cooling saves energy and operating expenses at Telecom sites, where the application of traditional air conditioners has resulted in very high energy costs. By using free cooling, the overall thermal management running expenditure can be reduced by up to 90%.

Free Cooling – how it works

Dantherm’s Free Cooling solutions create a fine-filtered overpressure. Motorized dampers are recommended to ensure optimum airflow in the shelter and to prevent ambient air from entering the shelter or room.

Total heat management

The Dantherm Free Cooling solutions provide the option of total heat management in the shelter, as the system controls both connected heating and air conditioning systems. Even surveillance and alarms are part of the Free Cooling solution.

6th generation free cooling

The Free Cooling technology has been used by Dantherm for more than a decade and has been through 6 design generations resulting in related know-how build-up. 


Value Propositions



  • Reduced Cooling Energy consumption
  • Reduced (55-60%)  AC Run Hours, Start/Stop, Maintenance and Overhaul

Less CO2 Emission

Greener solution due to lower fuel consumption & use of renewable energy

Less fuel theft

Due to the reduced rate of fueling the Sites.

Easier and lower-cost maintenance

One Consumable filter with easy replacement, filter clog alarm

Remote Monitoring

The system will be remotely monitored showing all site performance data.


AC Sequencing

Replacement of AC Sequence Panel.

Cooling Strategies 

Traditional cooling strategy

  • AC powered Aircon.
  • Setpoint for shelter: 22C°-25C°.  (some even at 20C°)

2 Zone Free Cooling Strategy

  • DC powered Aircon.
  • Setpoint for shelter: 35C°-45C°.  Use of Flexibox Free Cooling.
  • Setpoint for battery cooler: 25C° or 35C°.