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Heat exchange units (finned type heat exchangers for room air conditioners)

BIS QCO APPLICABLE · ISI MARK SCHEME · IS 11329

HSN 8419 50 99 (heat exchange units) is covered by a Bureau of Indian Standards Quality Control Order. Conformity to IS 11329:2018 is mandatory under the ISI Mark Scheme with effect from 01 October 2023, under the Air Conditioner and its Related Parts Hermetic Compressor and Temperature Sensing Controls (Quality Control) Amendment Order, 2025. No separate customs-clearance overlay applies beyond the BIS QCO obligation.

What this is

HSN code

8419 50 99

Chapter

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

BIS QCO

Applicable · ISI Mark Scheme · CM/L required

Indian Standard

IS 11329:2018 · effective 01-10-2023

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 11329:2018 for finned type heat exchangers for room air conditioners. Verify the supplier's CM/L number, licensed product scope, and manufacturing facility address on the BIS online register before placing the purchase order.
IS 11329:2018 applicable on finned type heat exchangers for room air conditioners w.e.f. 01-10-2023 · S.O. 4354(E) dated 05-12-2019
2
Ensure every heat exchanger unit bears the ISI 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 Conditioner and its Related Parts Hermetic Compressor and Temperature Sensing Controls (Quality Control) Amendment Order, 2025
3
Quote the supplier's BIS CM/L number on the bill of entry. Customs verifies the CM/L in real time against the BIS register; an absent, expired, or scope-mismatched licence triggers consignment detention, demurrage, and potential re-export or confiscation.
BIS Act, 2016 · Customs Act, 1962 · S.O. 4354(E) dated 05-12-2019
4
Determine whether the consignment qualifies for any exemption under paragraph 2 of the controlling Quality Control Order. Exemptions have been amended across successive notifications; confirm applicability against the current text as amended by S.O. 1518(E), S.O. 4671(E), S.O. 5095(E), S.O. 5972(E), S.O. 32(E), S.O. 695, and S.O. 1815(E).
S.O. 4354(E) dated 05-12-2019 as amended by S.O. 1518(E) dated 18-05-2020; S.O. 4671(E) dated 22-12-2020; S.O. 5095(E) dated 08-12-2021; S.O. 5972(E) dated 21-12-2022; S.O. 32(E) dated 02-01-2024; S.O. 695 dated 11-02-2025; S.O. 1815(E) dated 17-04-2025

A word of counsel

The single most common error on this tariff line is importing finned heat exchangers under a CM/L licence whose product scope is drawn against shell-and-tube or plate configurations — IS 11329:2018 covers multiple heat exchanger types, but the QCO as applied to this HSN is directed at finned type units for room air conditioners specifically. A CM/L that names a different configuration or end-use will be rejected by Customs as scope-mismatched, triggering detention even where the IS number on the licence appears correct. Confirm with the licensed manufacturer that the CM/L scope statement explicitly covers finned type heat exchangers for room air conditioners before the purchase order is placed.

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Frequently asked

Does HSN 8419 50 99 require BIS certification?

Yes. Finned type heat exchangers for room air conditioners classified under this tariff line require conformity to IS 11329:2018 under the ISI Mark Scheme, with effect from 01 October 2023, by virtue of S.O. 4354(E) and the Air Conditioner and its Related Parts Hermetic Compressor and Temperature Sensing Controls (Quality Control) Amendment Order, 2025.

Are any exemptions available from the BIS QCO obligation for heat exchange units?

Exemptions are defined in paragraph 2 of the controlling Quality Control Order as amended by successive notifications through S.O. 1815(E) dated 17-04-2025. Each amendment may alter the exemption categories; confirm the current exemption text before relying on any prior reading.

Does IS 11329:2018 cover all heat exchanger types under this HSN, or only finned type units?

The CCR restricts the QCO applicability at this tariff line to finned type heat exchangers for room air conditioners. Other heat exchanger configurations falling under HSN 8419 50 99 should be assessed separately against the current text of the Quality Control Order.

Does a single CM/L licence cover all heat exchanger variants from the same manufacturer?

No. A CM/L licence is scope-specific by product type, configuration, and manufacturing facility; units outside the licensed scope, or produced at an unlicensed plant, are not covered and will be detained at Customs.

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