### Question
How does the law define refrigerant?


### Answer
Under *42 U.S.C. § 7671h*, **refrigerant** is defined as:

> any class I or class II substance used in a motor vehicle air conditioner

#### Citation:
  - *42 U.S.C. § 7671h*
  - Heading: **CHAPTER 83-ENERGY EXTENSION SERVICE > SUBCHAPTER VI-STRATOSPHERIC OZONE PROTECTION**

