Date: 2026-05-25Category: Extra OrdinaryState: Union GovernmentCountry: India
In pursuance of Sub rule 1 of Rule 15 of the Bureau of Indian Standards Rules, 2018, the Bureau of Indian Standards hereby notifies that Amendments to Indian standards
**Executive Summary**
This notification issued by the Bureau of Indian Standards (BIS) on May 18, 2026, announces Amendment No. 1 to the Indian Standards for Room Air Conditioners (Unitary and Split). These amendments were established on May 15, 2026, to update the 2023 specifications (Fourth Revision). Stakeholders must transition to the amended standards by November 14, 2026, after which the versions without the amendments will no longer be in force.
**Key Points / Main Content**
**Establishment of Amendments**
* **IS 1391 (Part 1) : 2023:** Amendment No. 1 (May 2026) has been established for the specification of Unitary Air Conditioners.
* **IS 1391 (Part 2) : 2023:** Amendment No. 1 (May 2026) has been established for the specification of Split Air Conditioners.
**Regulatory Authority**
* The amendments are notified in pursuance of Sub-rule (1) of Rule (15) of the Bureau of Indian Standards Rules, 2018.
* The notification was published under the authority of the Department of Consumer Affairs.
**Implementation Timeline**
* **Establishment Date:** The official date of establishment for both amendments is May 15, 2026.
* **Transition Period:** The existing standards (without the specified amendments) shall remain in force until November 14, 2026.
**Impact Analysis**
**Manufacturers of Room Air Conditioners**
**Impact**
Manufacturers of both unitary and split air conditioners are directly affected by the revised technical specifications introduced in Amendment No. 1.
**Action Required**
They must review the specific changes in Amendment No. 1 and update their manufacturing processes, product designs, and internal quality testing to ensure compliance before the November 14, 2026 deadline.
**Bureau of Indian Standards (BIS) / Certification Bodies**
**Impact**
The regulatory body is responsible for overseeing the transition and ensuring that products certified under these standards meet the updated requirements.
**Action Required**
Certification officers must update their inspection and audit checklists to reflect the new amendments and ensure all licensees transition to the amended standards within the six-month grace period.
**Testing Laboratories**
**Impact**
Laboratories authorized to test Room Air Conditioners will need to align their testing protocols with the new amendments.
**Action Required**
Laboratories must update their accredited scope and testing methodologies to incorporate the changes mentioned in Amendment No. 1 for IS 1391 (Part 1 & 2) to provide valid compliance reports.
Key Entities Referenced
Bureau of Indian Standards Rules, 2018: The regulatory framework under which amendments to Indian standards are notified by the national standards body.
IS 1391 (Part 1) : 2023: Indian Standard for Room Air Conditioners (Unitary Air Conditioners) specifying performance and construction requirements.
IS 1391 (Part 2) : 2023: Indian Standard for Room Air Conditioners (Split Air Conditioners) specifying performance and construction requirements.
Bureau of Indian Standards: The national standards body of India responsible for the establishment and notification of amendments to Indian Standards.
रजिस्ट्री स.ं डी.एल.- 33004/99 REGD. No. D. L.-33004/99
सी.जी.-डी.एल.-अ.-25052026-272849
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CG-DL-E-25052026-272849
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असाधारण
EXTRAORDINARY
भाग III—खण् ड 4
PART III—Section 4
प्राजधकार स ेप्रकाजित
PUBLISHED BY AUTHORITY
स.ं 342] नई दिल्ली, सोमिार, मई 25, 2026/ज्य ष्े ठ 4, 1948
No. 342] NEW DELHI, MONDAY, MAY 25, 2026/JYAISTHA 4, 1948
भारतीय मानक ब्य रू ो
(उपभोक्त ा मामल े जिभाग)
अजधसचू ना
नई दिल्ली, 18 मई, 2026
संदर्भ: HQ-PUB015/1/2020-PUB-BIS (1539).— भारतीय मानक ब्यरू ो जनयम, 2018 के जनयम 15 के
उपजनयम (1) के अनसु रण म ें भारतीय मानक ब्यरू ो एतिद्वारा अजधसूजचत करता ह ै इसमें संलग्न अनूसचू ी में दिय े
गये मानकों में संिोधन दकये गये ह|ैं
3690 GI/2026 (1)2 THE GAZETTE OF INDIA : EXTRAORDINARY [PART III—SEC.4]
अनसु चू ी
क्रम स्ट्थाजपत भारतीय मानकों की सख्ं या, सिं ोधनों की सख्ं या सिं ोधनों की जतजथ िब तक
स.ं एि ं जतजथ प्रजतस्ट्थापन मानक तीसरे स्ट्तभं
िर् षतथा िीर्कष
जतजथ म ेंइंजगत सिं ोधन के
जबना भी लाग ूरहगे ा
(1) (2) (3) (4) (5)
आई एस 1391 (भाग 1) : 2023 संिोधन संख्या 1 15 मई 2026 14 निम्बर 2026
1 कक्ष िातानूकुलक — जिजिजि मई 2026
भाग 1 एदकक िातानूकुलक
(चौथा पनु रीक्षण)
2 आई एस 1391 (भाग 2) : 2023 संिोधन संख्या 1 15 मई 2026 14 निम्बर 2026
कक्ष िातानूकुलक — जिजिजि मई 2026
भाग 2 जिभक्त िातानूकुलक
(चौथा पनु रीक्षण)
जचत्रा गुप् ता, िैज्ञाजनक िी एि ंउप महाजनिेिक (हॉलमार्किंग एि ं रेननंग)
[जिज्ञापन-III/4/असा./110/2026-27]
BUREAU OF INDIAN STANDARDS
(Department of Consumer Affairs)
NOTIFICATION
New Delhi, the 18th May, 2026
Ref: HQ-PUB015/1/2020-PUB-BIS (1539).— In pursuance of Sub-rule (1) of Rule (15) of the Bureau
of Indian Standards Rules, 2018, the Bureau of Indian Standards hereby notifies that Amendments to Indian standards,
particulars of which are given in schedule hereto annexed have been established.[भाग III—खण् ड 4] भारत का रािपत्र : असाधारण 3
SCHEDULE
Sl No., Year & Title of the Indian No. and Date of Date till which
No. Standard Month/Year of the Establishment of the the standard
Amendment Amendment without the
amendment as
mentioned in
column 3 shall
remain in force
(1) (2) (3) (4) (5)
1 IS 1391 (Part 1) : 2023 Amendment No. 1 15 May 2026 14 November
Room Air Conditioners — May 2026 2026
Specification
Part 1 Unitary Air Conditioners
(Fourth Revision)
2 IS 1391 (Part 2) : 2023 Amendment No. 1 15 May 2026 14 November
Room Air Conditioners — May 2026 2026
Specification
Part 2 Split Air Conditioners
(Fourth Revision)
CHITRA GUPTA, Scientist G & DDG (Hallmarking and Training)
[ADVT.-III/4/Exty./110/2026-27]
Uploaded by Dte. of Printing at Government of India Press, Ring Road, Mayapuri, New Delhi-110064
and Published by the Controller of Publications, Delhi-110054.