How are the grades for clean air conditioning classified?
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How are the grades of clean air conditioning classified? This is an unknown factor for many users. In accordance with **relevant standard regulations, the energy efficiency ratio of air conditioners is divided into five levels: 1, 2, 3, 4, and 5. Level 1 represents the highest energy efficiency, while level 5 has the lowest energy efficiency; air conditioners with a rating below level 5 are prohibited from being sold on the market. Engineer Hai Risheng explained that air purification systems also have their own classification system, which is generally based on the varying levels of purification achieved. Currently, air purification systems on the market are classified into four grades: A, B, C, and D. The classification of clean air conditioning systems is determined by evaluating the cleanliness level based on the number of dust particles, airborne bacteria, and settled particles in the area. Different levels have their own specific requirements, including both dynamic and static ones, and these specific requirements are determined in accordance with the appendices of GMP.
The international standard score is divided into five levels, corresponding to 5–100, 6–1000, 7–10000, 8–100000, etc； **The standard is now GB50037--2001, Grade ISO5. The original classifications of grade 100, grade 1000, grade 10000, and grade 100000 were based on the US 209E standard. However, the current grades 1, 2, 3, 4, and 5 are in accordance with international standards; correspondingly, this means 5–100, 6–1000, 7–10000, 8–100000, etc ； **The standard is now GB50037--2001. Pharmaceutical manufacturing facilities are subject to GMP standards, and they are classified into categories of 100, 1000, 10000, and 300000. There are also GMP standards, with grading done on a scale of 100, 1000, 10000, and 300000, for a total of 4 grades.