### Question
What does CFEI mean?


### Answer
**CFEI** has the following meaning in *42 U.S.C. § 6295*:

> the Fan Energy Index for large-diameter ceiling fans, calculated in accordance with ANSI/AMCA Standard 208–18 titled "Calculation of the Fan Energy Index", with the following modifications:


(I) Using an Airflow Constant (Q0) of 26,500 cubic feet per minute

#### Citation:
  - *42 U.S.C. § 6295*
  - Heading: **CHAPTER 77-ENERGY CONSERVATION > SUBCHAPTER III-IMPROVING ENERGY EFFICIENCY > Part A-Energy Conservation Program for Consumer Products Other Than Automobiles**

