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Gb21455-2019 room air conditioner energy efficiency limit value and energy efficiency grade pdf

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Brief introduction: This book is a recently implemented energy efficiency standard for air conditioners, which replaces gb12021 3-2010 limited values and grades of energy efficiency for room air conditioners, gb21455-2013 limited values and grades of energy efficiency for room air conditioners with controllable speed. There are mainly technical changes between this standard and the two old versions mentioned above
1. The scope of the standard is modified;
2. The energy efficiency grade index of the product is revised;
3. The energy efficiency limit value of the product is revised.
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