Core TradesCâu 39 / 700
Under the California Energy Code, a residential exhaust fan rated below about 90 CFM must generally meet a MINIMUM efficacy of about:
a.0.5 CFM per watt
b.1.0 CFM per watt
c.1.4 CFM per watt
d.3.0 CFM per watt
Giải thích
Small residential exhaust fans must move at least about 1.4 CFM per watt to qualify as energy efficient. 0.5 and 1.0 fall below the standard, while 3.0 is a target more typical of larger, higher-efficiency fans.
Trích dẫn luật: 2025 CA Energy Code, Title 24 Part 6 (Fan Efficacy)Luyện miễn phí toàn bộ 700 câu hỏi — không cần đăng ký.
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