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Parts and components of air coolers and air filters

BIS QCO APPLICABLE · ISI MARK SCHEME · IS 01

HSN 8421 99 00 (parts and components of air coolers and air filters) is covered by a Bureau of Indian Standards Quality Control Order. Conformity to IS 3315:2019 and IS 17570 (Part 1):2021 is mandatory under the ISI Mark Scheme by virtue of the Air Cooler and Air Filters (Quality Control) Order, 2025, with phased enforcement commencing 01 April 2025 for general enterprises. No separate customs-clearance overlay applies.

What this is

HSN code

8421 99 00

Chapter

84 · Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof

BIS QCO

Applicable · ISI Mark Scheme · CM/L required

Indian Standard

IS 3315:2019 · effective 30-01-2025

Applicable Partner Government Agencies

BISBIS·Bureau of Indian Standards

Compliance steps

1
Source only from a Bureau of Indian Standards CM/L-licensed manufacturer holding a current licence against IS 3315:2019 or IS 17570 (Part 1):2021, as applicable to the specific product. Verify the CM/L number, licensed product scope, and manufacturing facility on the BIS online register before placing the purchase order.
Air Cooler and Air Filters (Quality Control) Order, 2025 · S.O. 529(E) dated 30-01-2025
2
Ensure every product bears the ISI Standard Mark and the supplier's CM/L number under Scheme-I of Schedule-II to the BIS (Conformity Assessment) Regulations, 2018. Marking must appear on the product itself, not on packaging alone.
Scheme-I of Schedule-II to the BIS (Conformity Assessment) Regulations, 2018 · Air Cooler and Air Filters (Quality Control) Order, 2025
3
Confirm the applicable enforcement date for the supplier's enterprise category: 01 April 2025 for general enterprises, 01 July 2025 for small enterprises, and 01 October 2025 for micro enterprises under the Udyam Portal. Consignments imported before the applicable enforcement date by a Bureau-certified manufacturer or applicant may be sold up to 31 October 2025 subject to declaration to the Bureau.
Air Cooler and Air Filters (Quality Control) Order, 2025 · S.O. 529(E) dated 30-01-2025
4
Verify whether the Udyam-registered micro-enterprise exemption applies: if the supplier's investment in plant and machinery does not exceed ₹1 crore and turnover does not exceed ₹5 crore for the previous financial year as certified by a Chartered Accountant, the QCO does not apply. Maintain documentary evidence of the Chartered Accountant certification.
Air Cooler and Air Filters (Quality Control) Order, 2025 · S.O. 529(E) dated 30-01-2025
5
Quote the supplier's BIS CM/L number on the bill of entry and ensure compliance with S.O. 776(E). Research-and-development imports are exempt up to 200 units per year per importer-manufacturer, provided the goods are not sold commercially and a year-wise record is maintained and furnished to the Central Government.
S.O. 776(E) dated 12-02-2026 · Air Cooler and Air Filters (Quality Control) Order, 2025

A word of counsel

The single most common error on this tariff line is importing air cooler and air filter parts against a CM/L licence that covers the finished appliance but not the specific component sub-scope. The Air Cooler and Air Filters (Quality Control) Order, 2025 requires the Standard Mark against IS 3315:2019 or IS 17570 (Part 1):2021 for articles specified in the Order's Schedule; a CM/L limited to a different product family or a finished-goods licence that does not extend to separately-imported parts will not satisfy customs verification, resulting in consignment detention regardless of the declared enterprise-category phasing.

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Frequently asked

Does HSN 8421 99 00 require BIS certification?

Yes. Air coolers, air filters, and related articles under this tariff line require conformity to IS 3315:2019 or IS 17570 (Part 1):2021 under the ISI Mark Scheme, mandatory under the Air Cooler and Air Filters (Quality Control) Order, 2025 via S.O. 529(E) dated 30 January 2025.

Are micro enterprises exempt from the Air Cooler and Air Filters QCO?

Yes, conditionally. A Udyam-registered enterprise whose investment in plant and machinery does not exceed ₹1 crore and whose turnover does not exceed ₹5 crore for the previous financial year, as certified by a Chartered Accountant, is exempt from the Order.

What are the phased enforcement dates for different enterprise categories?

General enterprises must comply from 01 April 2025, small enterprises from 01 July 2025, and micro enterprises from 01 October 2025. Declared pre-enforcement stock held by Bureau-certified manufacturers or applicants may be sold until 31 October 2025 upon declaration to the Bureau.

Does a single CM/L licence cover all air cooler and air filter variants from one manufacturer?

No. The CM/L is scope-specific by Indian Standard, product category, and manufacturing facility. Variants or components outside the licensed scope, or produced at an unlicensed plant, are not covered and will fail customs verification.

Last verified against gazette notifications: 2026-05-18. Source: BIS / Indian Customs CUSDATA.