Citysphere

Spheros has developed an innovative and at the same time elegant climatic concept specially for city buses. With the new Citysphere air distribution system passengers are guaranteed a comfortable climate in the bus interior. Its low life cycle costs, together with maintenance free AC circuit, user friendliness and simple installation make the roof-top unit an efficient solution for many different applications.

The advantages:

  • Weight-reduced: saves expensive fuel and reduces CO2 emissions
  • Hermetically sealed, pre-filled cooling circuit: Operation with alternative refrigerants possible in future
  • Patented, vehicle-independent air distribution system
  • Can already be used in hybrid and other alternative bus drive concepts
  • Conforms to the requirements of the future VDV guideline 236/1

Installation or retrofitting in a single day:

  • Simple installation
  • Hermetically sealed, pre-filled refrigerant circuit
  • No pipes for refrigerant required
  • No connection to air ducts necessary
  • Low workshop costs
  • Installation in hatch opening possible

Low life cycle costs:

  • No maintenance costs for refrigerant circuit
  • Substantially less added fuel consumption than a conventional rooftop unit
  • Low service costs (air filter change only once a year)
Weight (kg) 
Cooling capacity (kW)
Air flow volume (m3/h)
Refrigerant filling capacity (g)
Heating capacity (kW)
Fresh air portion (%) 
Rated voltage (V) DC 
Total power consumption:
 max. (A)
E‑motor (A)
Condenser blower (A)
Evaporator blower (A)
Dimensions L x W x H (mm)
Citysphere
approx. 50
3.8
1,350
800 (pre‑filled and hermetically sealed)
1.0 
15 
24
72
55 
10
1200 x 860 x 250