Products A–Z
HS code for extension module, heating boiler
In the UK Trade Tariff’s list of everyday names, “extension module, heating boiler” points to subheading 8537.10: for a voltage not exceeding 1000 V. Check the description and the notes of the chapter before declaring: the right code depends on what the goods are made of and how they are used.
The UK Global Tariff divides 8537.10 into 29 tariff lines; the duty is between 0% and 2% (average 1.9%). 1 of them is duty-free.
In the EU Combined Nomenclature, 8537.10 covers 4 tariff lines and the duty is between 0% and 2.1%. 1 of them is duty-free.
The Turkish Customs Tariff Schedule divides 8537.10 into 5 tariff lines; the duty is 2.1%.
Duty rates compared
UK Free – 2% Third-country duty 29 tariff lines · average 1.9% 
EU Free – 2.1% Third-country duty 4 tariff lines · average 1.6% 
Türkiye 2.1% Third-country duty 5 tariff lines 
USA Free – 2.7% General (MFN) 4 tariff lines · average 2% 
Canada Free Third-country duty 16 tariff lines 
Mexico Free – 15% Third-country duty 7 tariff lines · average 2.9% 
Brazil Free – 20% Third-country duty 5 tariff lines · average 14.1% 
Argentina Free – 18% Third-country duty 9 tariff lines · average 12.2% 
Peru Free Third-country duty 2 tariff lines 
New Zealand Free – 5% Third-country duty 3 tariff lines · average 3.3% 
Japan Free Third-country duty 1 tariff line 
Taiwan 1% – 6.5% Third-country duty 2 tariff lines · average 3.8% 
GCC 5% Third-country duty 8 tariff lines 
Switzerland Free Third-country duty 1 tariff line 
Norway Free Third-country duty 1 tariff line 
North Macedonia 2.1% – 15% Third-country duty 4 tariff lines · average 5.3% 
Nigeria 5% Third-country duty 1 tariff line See also
Questions and answers
What is the HS code for extension module, heating boiler?
Extension module, heating boiler are classified under 8537.10 (For a voltage not exceeding 1000 V) in the Harmonized System. National tariffs add more digits; see the lines on this page.