Truck refrigeration units, bus air conditioning system
  • Guchen BD series rooftop ac unit for bus
  • Guchen BD series rooftop air conditioner for bus
  • Guchen BD series rooftop air conditioner for bus
  • BD Series Bus Air Conditioner System

  • Model: • BD Series
  • Driven Type: • Engine Direct Driven
  • Refrigerant: • R134a
  • Installation : • Rooftop Mounted
  • Features: • Big Cooling Capacity 21KW - 37KW
  • Application : • 7-13 m bus
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  • BD Series Bus Air Conditioner System Introduction

    Bus is primarily used for tourism, inter-provincial long-distance transport, short-distance transport between urban and rural areas, and urban public transport (city bus). Bus air conditioning system, in other words, application of air conditioning technology in buses, which aims to creates a comfortable temperature inside, protect the health of driver and passengers, and improve work efficiency, simultaneously, increase the driving safety has a positive effect. BD Series bus HVAC using multilevel air purification and energy-efficient cooling system, not only make the passenger feel adequate cool air, but also save the fuel cost.
    Guchen Industry BD series bus air conditioner is integrated rooftop ac unit for bus, with R134a refrigerant, cooling capacity is from 21KW to 37KW; usually apply for 7-13m city bus. Customers can choose the different BD series models ac units for their bus to meet different demands, such as for:

    ▲ Inner city public transportation
    ▲ School public transportation
    ▲ Tourist transportation


    BD Series Bus Air Conditioner System Features

    1. Guchen BD series rooftop ac unit for bus condenser coil employs internal screw thread copper tube and hydrophilic aluminum fins, increase the contact area of the refrigerant and brass tube, hydrophilic Al-fins will be eliminate the water bridge phenomenon, dramatically improve the bus A/C heat transfer efficiency and have the best cooling effect.
    2. Evaporator is hydrophilic aluminum foil with internal ridge copper tube, high strength fiberglass, and heat and vibration insulation.

    guchen bd series bus ac units inner side

    3. BD Series bus air conditioning system adapts to any harsh environment, especially suitable for high-temperature desert area, with strong wind, dust storms, floating dust weather, such as Mid East, Africa, or coastal regions, e.g. Southeast Asia
    4. Manual and automatic control mode, simple operation and easily using.
    5. Fiberglass shell structure with good heating insulation and anti-aging properties.
    6. Guchen independent parallel control mode to ensure reliability and durability.
    7. Diversity of configurations to meet different needs and superiority in cost-effectiveness.
    8. Expansion valve is high sensitivity, good mobility.
    9. With silver the anti-acid and alkali salt corrosion, dustproof and waterproof connector.
    10. Air return grille is beautiful and easy to clean.

    Choose the Right Bus Air Conditioning System 

    guchen bd-04 bus air conditioner system

    BD-03 Bus Air Conditioning System Apply for 7-8M Bus

    Cooling capacity: 22000Kcal/h or 25.6KW or 87000BTU
    Number of Evaporator Blowers: 4


    guchen bd-04 bus air conditioner system
    BD-04 Bus Air Conditioning System Apply for 8-9.5M Bus

    Cooling capacity: 24000Kcal/h or 27.9KW or 95000BTU
    Number of Evaporator Blowers: 4


    guchen bd-04 bus air conditioner system
    BD-05 Bus Air Conditioning System Apply for 9-11.5M Bus

    Cooling capacity: 28000Kcal/h or 32.6KW or 111000BTU
    Number of Evaporator Blowers: 6

    guchen bd-04 bus air conditioner system
    BD-06 Bus Air Conditioning System Apply for 10-13M Bus

    Cooling capacity: 32000Kcal/h or 37.2KW or 127000BTU
    Number of Evaporator Blowers: 8

    How to Run BD Series Bus Air Conditioning System

    BD Series intercity bus air conditioning with the currently more popular outside overhead roof top mounted design, its condenser and evaporator design for integrated streamline assembly which mounted on the rooftop of the buses outside, and the compressor was install on the compressor bracket, generally next to the engine ( due to the large and medium-sized bus chassis is generally used in rear-engine type ), and the compressor was driven by vehicle engine vie electromagnetic clutch, and achieve the purpose of controlling the passenger compartment’ temperature of the buses. Its advantages are simple structure, easy installation and layout, low noise.

    Customer Installation and Reviews of BD Series Bus Air Conditioner 


    Here is a video about Guchen BD-06 bus air conditioner for the old TATA 12 meter buses, and equip with DD series independent bus ac units to TATA old buses in Middle East Market! So why they choose to add DD series independent bus air conditioner equip with BD series? 
    That is because BD series bus air conditioning system may consume 10% to 15% of the main engine power, this will directly affect acceleration and gradeability of the buses, while the air conditioner cooling capacity can be influenced by the vehicle speed, so if the bus stops running, and the air conditioning system is also stopped.
    So when add independent bus air conditioner system, the air conditioner will not be affected by bus engine, which can continue to make the ac unit working!

    Guchen bd series bus ac units for old tata bus

    “In our country, the ambient temperature can be up to 60℃ in summer, it is so hot to suffer such condition, so our government begin the new project and order some bus air conditioners from Guchen, it turns out that, Guchen products are very high quality in such high ambient temp to work well”

                                                                     -----By Guchen Customer Mr. Ankit

    Why Choose Guchen?

    ◆ GUCHEN is specialized in exporting Bus Air Conditioner for more than 20 years.
    ◆ GUCHEN has famous bus air conditioner parts suppliers, such as Bock, Bitzer and Valeo, which can offer customers’ a high quality products and assurance.
    ◆ 2 years after sales service
    ◆ 20, 0000 km journey guarantee
    ◆ Spare parts free change in 2 years
    ◆ 7*24h after sales online chatting
    ◆ Our experienced technicians and design engineers are capable of analyzing client’s needs and designing the most suitable plant configuration to satisfy the project specifications.
    Technical Parameter of BD Series Bus Air Conditioning System













    Cooling Capacity(kcal/h)






    Evaporator air flow(m³/h)






    Number of evaporator blowers






    Fresh air flow(m³/h)












    Max ambient temperature()







    Valeo TM31

    Bitzer F400

    Bock 560K

    Bock 560K

    Bock 655K

    Compressor displacement(cc)






    ◆ Compressor as optional like Valeo, Bitzer or Bock
    ◆ The fan and blower as option like brush or brushless, local or Spal etc.
    ◆ The coil of condenser as option like miro-chanel heat exchange, copper tube and aluminum tube. 
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