• 83.00 General116
• 83.10 Ventilation1
• 83.20 Heating3
• 83.30 Air conditioning10
• 83.40 Air conditioning (automatic)18
• 83.55 A/C compressor5
• 83.65 Refrigeration units1
• 83.70 Auxiliary/supplementary heater8
• 83.80 Fragrance system4