It is one of the most important features of DX Rooftop Packaged Air Conditioner as it maximise seasonal efficiency by reducing the use of thermodynamic cooling in mid season.
Thermodynamic cooling can be replaced by free Cooling when outdoor temperature is below the building set point saving up to 15% on annual energ consumption.Rooftop units are supplied with economizer and fresh air hood to improve comfort through better fresh air management and allow energy savings with free cooling.