Subheading · Chapter 84 · Heading 8403
8403.90: Central heating boilers other than those of heading 8402: parts
Central heating boiler parts
Official description Parts
8403.90 is the HS subheading for central heating boiler parts, under heading 8403 in chapter 84.
What you pay
Importing into UK
Rates by national line · UK Global Tariff
UK lines →- 8403 90 00 00 Parts
- 8403 90 10 00 Of cast iron Free
- 8403 90 90 00 Other Free
Additional duties and import rules
Charges on top of the customs duty, and rules the goods must meet at the border.
Additional duties and charges 2
- Additional dutyAdditional duties 35%
- Applies to goods from
- Belarus, Russia
- Legal act
- 2022 No. 376
- Documents
- 9008
- Duty suspensionSuspension - goods for certain categories of ships, boats and other vessels and for drilling or production platforms Free
- Applies to goods from
- all countries
- Legal act
- 2020 No. 1431
- Documents
- C990 End use authorisation ships and platforms (Column 8c, Annex A of Delegated Regulation (EU) 2015/2446)
Import requirements 2
- Prohibition or restrictionImport prohibition
- Applies to goods from
- North Korea
- Legal act
- S.I. 2019/411
- Import controlRestriction on entry into free circulation
- Applies to goods from
- Ukraine
- Legal act
- S.I. 2022/395
- Documents
- 9009
- 9010
- 9017
Preferential rates by country
| Agreement or scheme | Countries | Rate |
|---|---|---|
| standard rate (no agreement) | — | Free |
| DCTS Comprehensive | Afghanistan, Angola, Bangladesh, Benin and 38 moreAfghanistan, Angola, Bangladesh, Benin, Bhutan, Burkina Faso, Burundi, Cambodia, Central African Republic, Chad, Comoros, Congo - Kinshasa, Djibouti, Eritrea, Ethiopia, Gambia, Guinea, Guinea-Bissau, Haiti, Kiribati, Laos, Liberia, Malawi, Mali, Mauritania, Myanmar (Burma), Nepal, Niger, Rwanda, São Tomé & Príncipe, Senegal, Sierra Leone, Somalia, South Sudan, Sudan, Tanzania, Timor-Leste, Togo, Tuvalu, Uganda, Yemen, Zambia | Free |
| European Union (including code " EU") | Free | |
| DCTS Enhanced | Algeria, Bolivia, Cape Verde, Congo - Brazzaville and 13 moreAlgeria, Bolivia, Cape Verde, Congo - Brazzaville, Cook Islands, Kyrgyzstan, Micronesia, Mongolia, Nigeria, Niue, Pakistan, Philippines, Sri Lanka, Syria, Tajikistan, Uzbekistan, Vanuatu | Free |
| CARIFORUM | Antigua & Barbuda, Bahamas, Barbados, Belize and 10 moreAntigua & Barbuda, Bahamas, Barbados, Belize, Dominica, Dominican Republic, Grenada, Guyana, Jamaica, St Kitts & Nevis, St Lucia, St Vincent & the Grenadines, Suriname, Trinidad & Tobago | Free |
| OCTs (Overseas Countries and Territories) | Anguilla, Bermuda, British Indian Ocean Territory, British Virgin Islands and 7 moreAnguilla, Bermuda, British Indian Ocean Territory, British Virgin Islands, Cayman Islands, Falkland Islands, Montserrat, Pitcairn Islands, South Georgia & South Sandwich Islands, St Helena, Turks & Caicos Islands | Free |
| Central America | Costa Rica, El Salvador, Guatemala, Honduras, Nicaragua, Panama | Free |
| SADC EPA | Botswana, Eswatini, Lesotho, Mozambique, Namibia | Free |
| Eastern and Southern Africa States | Madagascar, Mauritius, Seychelles, Zimbabwe | Free |
| CPTPP | Brunei, Malaysia | Free |
| UK–Andorra agreement | Andorra | Free |
| UK–Albania agreement | Albania | Free |
| UK–Australia agreement | Australia | Free |
| UK–Canada agreement | Canada | Free |
| UK–Switzerland agreement | Switzerland | Free |
| UK–Côte d’Ivoire agreement | Côte d’Ivoire | Free |
| UK–Chile agreement | Chile | Free |
| UK–Cameroon agreement | Cameroon | Free |
| UK–Colombia agreement | Colombia | Free |
| UK–Ceuta & Melilla agreement | Ceuta & Melilla | Free |
| UK–Ecuador agreement | Ecuador | Free |
| UK–Egypt agreement | Egypt | Free |
| UK–Fiji agreement | Fiji | Free |
| UK–Faroe Islands agreement | Faroe Islands | Free |
| UK–Georgia agreement | Georgia | Free |
| UK–Ghana agreement | Ghana | Free |
| DCTS Standard | Indonesia | Free |
| UK–Israel agreement | Israel | Free |
| UK–India agreement | India | Free |
| UK–Iceland agreement | Iceland | Free |
| UK–Jordan agreement | Jordan | Free |
| UK–Japan agreement | Japan | Free |
| UK–Kenya agreement | Kenya | Free |
| UK–South Korea agreement | South Korea | Free |
| UK–Lebanon agreement | Lebanon | Free |
| UK–Liechtenstein agreement | Liechtenstein | Free |
| UK–Morocco agreement | Morocco | Free |
| UK–Moldova agreement | Moldova | Free |
| UK–North Macedonia agreement | North Macedonia | Free |
| UK–Mexico agreement | Mexico | Free |
| UK–Norway agreement | Norway | Free |
| UK–New Zealand agreement | New Zealand | Free |
| UK–Peru agreement | Peru | Free |
| UK–Papua New Guinea agreement | Papua New Guinea | Free |
| UK–Palestinian Territories agreement | Palestinian Territories | Free |
| UK–Serbia agreement | Serbia | Free |
| UK–Solomon Islands agreement | Solomon Islands | Free |
| UK–Singapore agreement | Singapore | Free |
| UK–San Marino agreement | San Marino | Free |
| UK–Tunisia agreement | Tunisia | Free |
| UK–Türkiye agreement | Türkiye | Free |
| UK–Ukraine agreement | Ukraine | Free |
| UK–Vietnam agreement | Vietnam | Free |
| UK–Samoa agreement | Samoa | Free |
| UK–Kosovo agreement | Kosovo | Free |
| UK–South Africa agreement | South Africa | Free |
UK: imports by month
Main suppliers, last 12 months
| Country | Value | Share | Change |
|---|---|---|---|
 Slovakia | £71.1m | 39.6% | +5.2% |
 Germany | £28.8m | 16.1% | -13.3% |
 China | £19.2m | 10.7% | +2.3% |
 Netherlands | £14.2m | 7.9% | +7.7% |
 Italy | £12.3m | 6.9% | -13.4% |
 France | £8.4m | 4.7% | +2.2% |
 Poland | £5.2m | 2.9% | -31.9% |
 Türkiye | £4.8m | 2.7% | +1.7% |
Same subheading in other tariffs
EU 2.7% Third-country duty 2 tariff lines Türkiye 2.7% Third-country duty 2 tariff lines 
USA Free General (MFN) 1 tariff line 
Canada Free Third-country duty 1 tariff line 
Mexico Free Third-country duty 1 tariff line 
Brazil 20% Third-country duty 1 tariff line 
Argentina 12.6% Third-country duty 1 tariff line 
Peru Free Third-country duty 1 tariff line 
New Zealand 5% Third-country duty 1 tariff line 
Japan Free Third-country duty 1 tariff line 
Taiwan 3% Third-country duty 1 tariff line 
GCC 5% Third-country duty 1 tariff line 
Switzerland Free Third-country duty 1 tariff line 
Norway Free Third-country duty 1 tariff line 
North Macedonia 15% Third-country duty 2 tariff lines 
Nigeria 5% Third-country duty 1 tariff line World trade in 2024
Trade value (US$) no reported trade < US$290kUS$290k+US$6m+US$35m+> US$249m
Exports: 112
- Germany: US$305m
- France: US$267m
- Slovakia: US$261m
- Italy: US$249m
- Austria: US$194m
- Netherlands: US$161m
- China: US$136m
- Poland: US$102m
- Türkiye: US$42m
- Czechia: US$40m
- United Kingdom: US$36m
- South Korea: US$35m
- Spain: US$26m
- Romania: US$24m
- Tunisia: US$23m
- United States: US$22m
- Denmark: US$20m
- Hungary: US$19m
- Belgium: US$17m
- Canada: US$15m
- Switzerland: US$14m
- Sweden: US$11m
- Russia: US$10m
- Portugal: US$10m
- Indonesia: US$9m
- Ireland: US$7m
- Serbia: US$6m
- Bosnia & Herzegovina: US$6m
- Croatia: US$4m
- Bulgaria: US$4m
- Iran: US$4m
- Ukraine: US$4m
- Albania: US$3m
- Slovenia: US$3m
- Finland: US$3m
- Thailand: US$2m
- Lithuania: US$2m
- Norway: US$2m
- India: US$2m
- Singapore: US$1m
- Malaysia: US$1m
- Estonia: US$1m
- Japan: US$898k
- Taiwan: US$848k
- United Arab Emirates: US$843k
- Mexico: US$775k
- Moldova: US$678k
- Greece: US$638k
- Latvia: US$624k
- Philippines: US$531k
- South Africa: US$421k
- Kazakhstan: US$369k
- Armenia: US$369k
- Australia: US$323k
- Belarus: US$316k
- Hong Kong SAR China: US$290k
- Brazil: US$212k
- Vietnam: US$155k
- Luxembourg: US$135k
- Colombia: US$104k
Trade value (US$) no reported trade < US$213kUS$213k+US$2m+US$22m+> US$112m
Imports: 186
- Germany: US$360m
- United Kingdom: US$242m
- France: US$180m
- Italy: US$157m
- Slovakia: US$134m
- United States: US$112m
- Netherlands: US$108m
- Türkiye: US$90m
- Switzerland: US$85m
- Austria: US$78m
- Spain: US$69m
- Poland: US$66m
- Belgium: US$45m
- Canada: US$35m
- South Korea: US$29m
- Ireland: US$28m
- Russia: US$24m
- China: US$23m
- Czechia: US$22m
- Portugal: US$20m
- Kazakhstan: US$17m
- Romania: US$15m
- Norway: US$14m
- Hungary: US$11m
- Algeria: US$11m
- Denmark: US$9m
- Vietnam: US$8m
- Sweden: US$8m
- Iran: US$8m
- Slovenia: US$7m
- Greece: US$6m
- Luxembourg: US$5m
- Latvia: US$5m
- Bulgaria: US$5m
- Japan: US$5m
- Belarus: US$4m
- Finland: US$3m
- Kyrgyzstan: US$3m
- Australia: US$3m
- Ukraine: US$3m
- Croatia: US$3m
- Serbia: US$3m
- Lithuania: US$3m
- Argentina: US$2m
- Bosnia & Herzegovina: US$2m
- Malaysia: US$2m
- Chile: US$2m
- Estonia: US$2m
- Afghanistan: US$2m
- Indonesia: US$2m
- Uzbekistan: US$1m
- Lebanon: US$1m
- Hong Kong SAR China: US$1m
- Tunisia: US$1m
- Turkmenistan: US$1m
- United Arab Emirates: US$1m
- Taiwan: US$1m
- Thailand: US$999k
- Saudi Arabia: US$981k
- Georgia: US$962k
Top exporters
| Rank | Country | Value | Share |
|---|---|---|---|
| 1 | Germany | US$305m | 14.4% |
| 2 | France | US$267m | 12.6% |
| 3 | Slovakia | US$261m | 12.4% |
| 4 | Italy | US$249m | 11.8% |
| 5 |  Austria | US$194m | 9.2% |
| 6 | Netherlands | US$161m | 7.6% |
| 7 | China | US$136m | 6.4% |
| 8 | Poland | US$102m | 4.8% |
| 9 | Türkiye | US$42m | 2% |
| 10 |  Czechia | US$40m | 1.9% |
Top importers
| Rank | Country | Value | Share |
|---|---|---|---|
| 1 | Germany | US$360m | 17.1% |
| 2 | United Kingdom | US$242m | 11.4% |
| 3 | France | US$180m | 8.5% |
| 4 | Italy | US$157m | 7.4% |
| 5 | Slovakia | US$134m | 6.3% |
| 6 | United States | US$112m | 5.3% |
| 7 | Netherlands | US$108m | 5.1% |
| 8 | Türkiye | US$90m | 4.2% |
| 9 | Switzerland | US$85m | 4% |
| 10 | Austria | US$78m | 3.7% |
Import duty on this product around the world 165
The most-favoured-nation (MFN) duty each country applies to goods of this HS subheading: the average over its national tariff lines, with the lowest and highest line where they differ. Goods from countries with a trade agreement often pay less.
- 5%median duty
- 57number of duty-free countries (MFN)
- 45%highest: Bahamas, Morocco, Algeria
165
| Importing country | MFN duty | lines from – to | data year |
|---|---|---|---|
 Afghanistan | 5% | 2018 · HS 2012 | |
 Albania | 0% | 2023 | |
 Algeria | 30% | 2023 | |
 Angola | 0% | 2023 · HS 2017 | |
 Anguilla | 15% | 2021 · HS 2017 | |
 Antigua & Barbuda | 5% | 2021 · HS 2007 | |
| Argentina | 14% | 2023 · HS 2017 | |
 Armenia | 10% | 2023 | |
 Aruba | 12% | 2021 · HS 2012 | |
 Australia | 5% | 2023 | |
 Azerbaijan | 0% | 2023 · HS 2017 | |
 Bahamas | 45% | 2022 | |
 Bahrain | 5% | 2023 | |
 Bangladesh | 1% | 2023 · HS 2017 | |
 Barbados | 5% | 2022 · HS 2017 | |
 Belarus | 10% | 2021 · HS 2017 | |
 Belize | 5% | 2023 | |
 Benin | 5% | 2023 | |
 Bermuda | 25% | 2023 | |
 Bhutan | 10% | 2022 | |
 Bolivia | 15% | 2023 · HS 2017 | |
 Bosnia & Herzegovina | 10% | 2022 | |
 Botswana | 0% | 2023 | |
| Brazil | 14% | 2023 · HS 2017 | |
 Brunei | 0% | 2023 · HS 2017 | |
 Burkina Faso | 5% | 2023 | |
 Burundi | 0% | 2023 | |
 Cambodia | 15% | 2023 · HS 2017 | |
 Cameroon | 10% | 2023 | |
| Canada | 0% | 2023 | |
 Cape Verde | 5% | 2023 · HS 2017 | |
 Cayman Islands | 22% | 2021 · HS 2002 | |
 Central African Republic | 10% | 2023 | |
 Chad | 10% | 2023 | |
 Chile | 6% | 2023 · HS 2017 | |
| China | 6% | 2023 | |
 Colombia | 0% | 2023 · HS 2017 | |
 Comoros | 20% | 2021 · HS 2017 | |
 Congo - Brazzaville | 10% | 2023 | |
 Cook Islands | 0% | 2022 · HS 2017 | |
 Costa Rica | 0% | 2023 | |
 Côte d’Ivoire | 5% | 2023 · HS 2017 | |
 Cuba | 10% | 2023 · HS 2017 | |
 Dominica | 0% | 2023 · HS 2017 | |
 Dominican Republic | 0% | 2023 | |
 Ecuador | 25% | 2023 · HS 2017 | |
 Egypt | 2% | 2019 · HS 2017 | |
 El Salvador | 0% | 2022 | |
 Equatorial Guinea | 10% | 2023 | |
 Eswatini | 0% | 2023 | |
 Ethiopia | 10% | 2021 · HS 2017 | |
| European Union (27 countries) | 2.7% | 2023 | |
 Fiji | 0% | 2023 | |
 French Polynesia | 10% | 2023 | |
 Gabon | 10% | 2023 | |
 Gambia | 5% | 2023 | |
 Georgia | 0% | 2022 · HS 2017 | |
 Ghana | 5% | 2023 | |
 Gibraltar | 12% | 2023 · HS 2017 | |
 Grenada | 5% | 2023 · HS 2012 | |
 Guatemala | 0% | 2023 | |
 Guinea | 5% | 2023 | |
 Guinea-Bissau | 5% | 2023 | |
 Guyana | 0% | 2023 · HS 2017 | |
 Haiti | 0% | 2020 · HS 2017 | |
 Honduras | 0% | 2023 | |
 Hong Kong SAR China | 0% | 2023 | |
 Iceland | 0% | 2023 | |
 India | 7.5% | 2023 | |
 Indonesia | 10% | 2023 | |
 Iran | 18% | 10% – 26% | 2020 · HS 2017 |
 Israel | 12% | 2022 · HS 2017 | |
 Jamaica | 0% | 2023 | |
| Japan | 0% | 2023 | |
 Jordan | 3.3% | 0% – 5% | 2023 |
 Kazakhstan | 10% | 2023 | |
 Kenya | 0% | 2023 | |
 Kiribati | 25% | 2023 · HS 2002 | |
 Kuwait | 5% | 2023 | |
 Kyrgyzstan | 10% | 2021 · HS 2017 | |
 Laos | 10% | 2023 · HS 2017 | |
 Lebanon | 5% | 2020 · HS 2017 | |
 Lesotho | 0% | 2023 | |
 Liberia | 5% | 2023 | |
 Libya | 5% | 2021 · HS 2017 | |
 Liechtenstein | 1.1%* | 0.7% – 1.5% | 2021 · HS 2017 |
 Macao SAR China | 0% | 2023 | |
 Madagascar | 10% | 2023 | |
 Malawi | 0% | 2021 · HS 2017 | |
 Malaysia | 0% | 2023 | |
 Maldives | 20% | 2023 | |
 Mali | 5% | 2023 | |
 Mauritania | 5% | 2023 · HS 2017 | |
 Mauritius | 0% | 2023 | |
| Mexico | 0% | 2023 · HS 2017 | |
 Micronesia | 4% | 2021 · HS 2017 | |
 Moldova | 0% | 2023 · HS 2017 | |
 Mongolia | 5% | 2023 | |
 Montserrat | 0% | 2023 · HS 2017 | |
 Morocco | 40% | 2023 | |
 Mozambique | 5% | 2023 | |
 Myanmar (Burma) | 3% | 2023 · HS 2017 | |
 Namibia | 0% | 2023 | |
 Nauru | 10% | 2021 · HS 2017 | |
 Nepal | 5% | 2023 | |
| New Zealand | 5% | 2023 | |
 Nicaragua | 0% | 2023 | |
 Niger | 5% | 2023 | |
| Nigeria | 5% | 2023 | |
| North Macedonia | 15% | 2023 | |
| Norway | 0% | 2023 | |
 Oman | 5% | 2023 | |
 Pakistan | 11% | 2023 | |
 Palau | 3% | 2023 · HS 2012 | |
 Palestinian Territories | 12% | 2017 · HS 2017 | |
 Panama | 0% | 2023 | |
 Papua New Guinea | 0% | 2023 | |
 Paraguay | 0% | 2023 · HS 2017 | |
| Peru | 0% | 2023 · HS 2017 | |
 Philippines | 4% | 3% – 5% | 2023 |
 Qatar | 5% | 2023 | |
 Russia | 10% | 2021 · HS 2017 | |
 Rwanda | 0% | 2023 | |
 Samoa | 8% | 2020 · HS 2017 | |
 São Tomé & Príncipe | 10% | 2019 · HS 2017 | |
 Saudi Arabia | 5% | 2023 | |
 Senegal | 5% | 2023 | |
 Seychelles | 0% | 2023 | |
 Sierra Leone | 5% | 2023 | |
 Singapore | 0% | 2023 · HS 2017 | |
 Solomon Islands | 10% | 2023 · HS 2017 | |
 Somalia | 5% | 2023 · HS 2017 | |
 South Africa | 0% | 2023 | |
 South Korea | 8% | 2023 | |
 Sri Lanka | 0% | 2023 | |
 St Kitts & Nevis | 5% | 2023 | |
 St Lucia | 0% | 2023 · HS 2012 | |
 St Pierre & Miquelon | 5% | 2021 · HS 2017 | |
 St Vincent & the Grenadines | 0% | 2023 | |
 Sudan | 10% | 2021 · HS 2017 | |
 Suriname | 5% | 2023 · HS 2007 | |
| Switzerland | 1%* | 0.6% – 1.3% | 2023 |
 Syria | 5% | 2020 · HS 2012 | |
 Tajikistan | 5% | 2021 · HS 2012 | |
 Tanzania | 0% | 2023 | |
 Thailand | 10% | 2023 | |
 Togo | 5% | 2023 | |
 Tonga | 3% | 2023 · HS 2017 | |
 Trinidad & Tobago | 0% | 2023 · HS 2012 | |
| Türkiye | 13% | 2023 | |
 Tuvalu | 0% | 2017 · HS 2017 | |
 Uganda | 0% | 2023 | |
 Ukraine | 0% | 2023 · HS 2017 | |
 United Arab Emirates | 5% | 2023 | |
| United Kingdom | 0% | 2023 | |
| United States | 0% | 2023 | |
 Uruguay | 2% | 2023 · HS 2017 | |
 Uzbekistan | 0% | 2021 · HS 2017 | |
 Vanuatu | 0% | 2023 | |
 Venezuela | 14% | 2023 · HS 2017 | |
 Vietnam | 0% | 2023 | |
 Wallis & Futuna | 10% | 2021 · HS 2012 | |
 Yemen | 5% | 2017 · HS 2017 | |
 Zambia | 15% | 2023 | |
 Zimbabwe | 0.1% | 2023 |
Tariff data years 2017–2023; rates may have changed since. * ad valorem equivalent of specific duties (UNCTAD estimate) · UNCTAD TRAINS, accessed via WITS (World Bank)
Classifications and correspondences
Where this HS subheading sits in the United Nations' statistical classifications, and which codes it had in earlier editions of the Harmonized System.
- SITC Rev. 4
- 81219 Parts for the boilers of heading 812.17
- End use (BEC Rev. 5)
- Intermediate goods · BEC 211210
- CPC 2.1 product
- 44833 Parts of central heating boilers for producing hot water or low pressure steam
- ISIC Rev. 4 activity
- 2512 Manufacture of tanks, reservoirs and containers of metal
Earlier HS editions
| HS | Code | |
|---|---|---|
| 2017 | 8403.90 | changed |
| 2012 | 8403.90 | changed |
| 2007 | 8403.90 | changed |
| 2002 | 8403.90 | changed |
| 1996 | 8403.90 | changed |
| 1992 | 8403.90 | changed |
Correspondence tables of the United Nations Statistics Division (UNSD)
The UK Global Tariff divides subheading 8403.90 into 2 tariff lines; the duty is duty-free.
In the EU Combined Nomenclature, subheading 8403.90 covers 2 tariff lines and the duty is 2.7%.
174 countries pay no duty in the UK thanks to trade agreements and preference schemes such as DCTS Comprehensive and European Union, against a standard rate of Free.
In the UK, additional duty of 35% applies on top of the customs duty to goods from Belarus and Russia.
Imports of central heating boiler parts into the UK came to £179.4m between September 2025 and August 2026 (down 1% on the year before); Slovakia supplied 40%, followed by Germany.
In 2024, countries exported central heating boiler parts worth US$2bn (−14.1% year on year).
The largest exporter was Germany (US$305m), followed by France.
Products classified here
Questions and answers
What is the HS code for central heating boilers other than those of heading 8402: parts?
Central heating boilers other than those of heading 8402: parts fall under HS subheading 8403.90, part of heading 8403, in section XVI of the Harmonized System.
What is the import duty on central heating boilers other than those of… in the UK?
Under the UK Global Tariff, imports under 8403.90 from countries without a preferential agreement are free of duty. Preferential rates, anti-dumping duties and VAT are not included.
What is the import duty on central heating boilers other than those of… in the EU?
Under the EU Combined Nomenclature, imports under 8403.90 from countries without a preferential agreement are charged at 2.7%. Preferential rates, anti-dumping duties and VAT are not included.
Which country exports the most central heating boilers other than those of…?
Germany, with US$305m in 2024 (14.4% of world exports).
Which countries can export central heating boiler parts to the UK duty-free?
174 countries pay no duty under a trade agreement or preference scheme, among them partners under DCTS Comprehensive, European Union, DCTS Enhanced. The goods must meet the agreement’s rules of origin and the importer needs proof of origin; otherwise the standard rate of Free applies. Pick a country above to see its rate.
Is there anti-dumping duty on central heating boiler parts?
The UK charges additional duty of 35% on goods from Belarus and Russia. Lower rates apply to the named exporters listed in the measure.
Where does the UK import central heating boiler parts from?
In the 12 months to August 2026, the largest suppliers were Slovakia (40%), Germany (16%) and China (11%), out of total imports of £179.4m.
Typical products
Everyday names, not part of the legal text.