• 83.00 General13
• 83.10 Ventilation11
• 83.20 Heating24
• 83.25 Automatic heater6
• 83.30 Air conditioning74
• 83.40 Air conditioning (automatic)13
• 83.55 A/C compressor24
• 83.57 Temperature control9
• 83.70 Auxiliary/supplementary heater105