• 83.00 General128
• 83.10 Ventilation11
• 83.20 Heating27
• 83.25 Automatic heater6
• 83.30 Air conditioning76
• 83.40 Air conditioning (automatic)31
• 83.55 A/C compressor26
• 83.57 Temperature control9
• 83.65 Refrigeration units1
• 83.70 Auxiliary/supplementary heater149
• 83.80 Fragrance system4