| 28250 | Air cleansing plant (not for air conditioning equipment) (manufacture) |
| 28250 | Air conditioning equipment for aircraft (manufacture) |
| 28250 | Air conditioning machines (manufacture) |
| 28250 | Air conditioning package (manufacture) |
| 28250 | Air filter for air conditioning equipment (manufacture) |
| 28250 | Atmospheric pollution control plant (manufacture) |
| 28250 | Attic ventilation fans (manufacture) |
| 28250 | Cold storage equipment (manufacture) |
| 28250 | Condenser for air conditioning equipment (air or water cooled) (manufacture) |
| 28250 | Condenser unit for refrigerator (manufacture) |
| 28250 | Cooling equipment for non-domestic use (manufacture) |
| 28250 | Cooling tower for air conditioning (manufacture) |
| 28250 | Display cabinet (refrigerated) (manufacture) |
| 28250 | Dust collector for air conditioning equipment (manufacture) |
| 28250 | Evaporator for refrigeration machinery (manufacture) |
| 28250 | Fan coil unit (manufacture) |
| 28250 | Fans (domestic) (manufacture) |
| 28250 | Fans (non-domestic) (manufacture) |
| 28250 | Food freezer over 12 cubic feet capacity (manufacture) |
| 28250 | Freezing industrial equipment, including assemblies of components (manufacture) |
| 28250 | Gas cleansing plant (manufacture) |
| 28250 | Heat exchange units for air conditioning (manufacture) |
| 28250 | Humidifier for air conditioning equipment (manufacture) |
| 28250 | Ice cream conservator (manufacture) |
| 28250 | Induction unit for air conditioning equipment (manufacture) |
| 28250 | Machinery for liquefying air or gas (manufacture) |
| 28250 | Non-domestic cooling and ventilation equipment parts (manufacture) |
| 28250 | Refrigerated service cabinet (manufacture) |
| 28250 | Refrigerating and freezing equipment parts (manufacture) |
| 28250 | Refrigerating equipment (manufacture) |
| 28250 | Refrigerating or freezing equipment for industrial use (manufacture) |
| 28250 | Refrigerator cabinets made of wood (manufacture) |
| 28250 | Refrigerator for commercial use (manufacture) |
| 28250 | Scrubber for air conditioning equipment (manufacture) |
| 28250 | Sectional coldroom (manufacture) |
| 28250 | Ventilating fans (manufacture) |
| 28250 | Ventilating unit (manufacture) |
| 28250 | Ventilation equipment for domestic use (manufacture) |
| 28250 | Ventilation equipment for non-domestic use (manufacture) |
| 28250 | |