2825 Manufacture of non-domestic air conditioning equipment

28.25.1 Heat exchange units; non-domestic air conditioning machines, refrigeration and freezing equipment
28.25.11 Heat exchange units and machinery for liquefying air or other gases
28.25.12 Air conditioning machines
This subcategory excludes:
- air-conditioning machines for motor vehicles, see 29.32.30
28.25.13 Refrigeration and freezing equipment
This subcategory excludes:
- household type refrigerating or freezing equipment, see 27.51.11
- heat pumps other than air conditioning machines, see 28.21.14
28.25.14 Machinery and apparatus for filtering or purifying gases
28.25.2 Fans, other than table, floor, wall, window, ceiling or roof fans
28.25.20 Fans, other than table, floor, wall, window, ceiling or roof fans
This subcategory excludes:
- fans of domestic type, see, 27.51.15
28.25.3 Parts of refrigeration and freezing equipment and heat pumps
28.25.30 Parts of refrigeration and freezing equipment and heat pumps
28.25.9 Sub-contracted operations as part of manufacturing of non-domestic air conditioning equipment
28.25.99 Sub-contracted operations as part of manufacturing of non-domestic air conditioning equipment