For the purposes of this subchapter, the term: (1) “Air conditioner” means an appliance, system, or mechanism designed to remove heat and humidity from ambient air for thermal comfort. (2) Repealed. (3) “Commercial property” means income-producing property as identified under zoning classifications that would allow for uses such as office buildings, retail stores, and service facilities pursuant to Chapter 7 of Title 11 of the District of Columbia Municipal Regulations (11 DCMR § 700 et seq.). (3A) "DOEE" means the Department of Energy and Environment. (4) “Person” means: (A) The owner or lessee of the portion of a commercial building or structure that is a retail or wholesale establishment that sells goods or provides services to consumers; and (B) The record owner or lessee of any other portion of a commercial building or structure. (5) Repealed.