2821 Manufacture of ovens, furnaces and permanent household heating equipment

28.21.1 Ovens, furnaces and permanent household heating equipment
28.21.11 Furnace burners; mechanical stokers and grates; mechanical ash dischargers and the like
28.21.12 Industrial or laboratory furnaces and ovens, non-electric
This subcategory also includes:
- incinerators
This subcategory excludes:
- bakery ovens, see 28.93.15
28.21.13 Industrial or laboratory electric furnaces and ovens; induction or dielectric heating equipment
28.21.14 Non-reversible heat pumps
28.21.15 Household cooling and ventilation equipment
28.21.16 Central heating boilers, for producing hot water or low pressure steam
28.21.17 Other permanent household heating equipment
This subcategory includes:
- solar water heaters
28.21.18 Parts of ovens, furnaces and permanent household heating equipment, excluding parts for central heating boilers
28.21.19 Parts for central heating boilers
28.21.9 Sub-contracted operations as part of manufacturing of ovens, furnaces and permanent household heating equipment
28.21.99 Sub-contracted operations as part of manufacturing of ovens, furnaces and permanent household heating equipment