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Compact, Rooftop, Electric

EZDS is a rooftop DC electric bus air conditioner driven directly by battery for 6 to 12m without DC-AC converter, cooling capacity from14000 to 32000 kcal/h, heat capacity from 12000 to 30000 kcal/h. Working stably from -20℃~50℃ with heat pump technology

  • City Bus

  • Intercity Bus

  • Coach

  • School Bus

Technical Data sheet

Model EZDD-03 EZDS-04 EZDS-05 EZDS-06    
Vehicle Length 6-7m 7-9m 8-10m 10-12m    
Cooling Capacity(kcal/h) 14000 24000 28000 32000    
Heat Capacity(kcal/h) 12000 22000 26000 30000    
Evaporator Airflow(m³/h) 3200 4000 6000 6000    
Compressor  EVS-34 2*EVS-34 2*EVS-34 2*EVS-34    
Size(mm) LxWxH 2440*1630*240 2500*1920*270 2750*1920*270 3000*1920*270    
1. Compressor Brand: HITACHI                                                                                              


  •  Efficient

    With DC Variable-frequency compressor and brushless low voltage DC fan, efficiency improved.

  • Reliable

    All components selected reaching passenger car level, power module, compressor etc all with IP67 Level, Complete pressure, temperature, undervoltage, overvoltage, short circuit, phase loss, overcurrent, multiple insulations protection, EMC meeting european standards with E-Mark.

  • Advanced

    Stable heating under ﹣20°C through low temperature heat pump.

  • Intelligent

    With advanced PI Variable-frequency control, stepless regulation according to the temperature inside and outside, energy saving 15%; Smart CAN control, communication with the bus and start or stop the air conditioner according to bus demand, extending battery lifecycle.

  • Ultralight

    EZDS-06 with length less than 3m, 7.5 kg compressor, total weight less than 260kg, 30% ligther than others.

  •  Quiet

    With DC brushless fan and soundproof materials, noise level reduced more than 2dB. 


    • Preparation

      First clean the rooftop surface, then put glue to install the sponge and rubber pad, later put glue with a glue gun around the sponge.

    • Evaporator and Condensor Installation

      Lift the condensor and evaporator to the top of the bus, install and connect the pipes and wiring harness, then fix the condesor and evaporator to the bus rooftop, put glue for sealants where needed.

    • Cover Installation

      Move the cover to the top of condensor and evaporator, check the position and drop the cover, fix screws and check the gap to follow requrements.


    • Bus Air Conditioner in South America  

    • Bus Air Conditioner in South America  

    • Bus Air Conditioner in South America  

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