QB/T 4975-2026Particular requirements for manufacturing household and similar room air conditioners using flammable refrigerants (English PDF)

QB/T 4975-2026 is the English-translated version of 使用可燃性制冷剂生产家用和类似用途房间空调器的特殊要求.

QB/T 4975-2026 sets out particular requirements for the manufacture of household and similar room air conditioners that use flammable refrigerants. It concerns the production stage, that is, how such appliances are made in the factory when the refrigerant they contain is flammable. The word particular in the title shows that the document adds to the ordinary rules for making air conditioners and speaks only to the special case of flammable refrigerants. It is a product standard under the Ministry of Industry and Information Technology.

Air conditioner manufacturers and their production and safety staff are the main users, together with inspection bodies and buyers who audit suppliers. The standard is voluntary, as the /T in the code shows. It was issued on 13 February 2026 and takes effect on 1 September 2026. It replaces QB/T 4975-2016.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

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