### Question
How does the law define commercial package air conditioning and heating equipment?


### Answer
Under *42 U.S.C. § 6311*, **commercial package air conditioning and heating equipment** is defined as:

> air-cooled, water-cooled, evaporatively-cooled, or water source (not including ground water source) electrically operated, unitary central air conditioners and central air conditioning heat pumps for commercial application

#### Citation:
  - *42 U.S.C. § 6311*
  - Heading: **CHAPTER 77-ENERGY CONSERVATION > SUBCHAPTER III-IMPROVING ENERGY EFFICIENCY > Part A&ndash;1-Certain Industrial Equipment**

