N.Y.C. Admin. Code § 20-721: § 20-721 Regulations.

(a) The commissioner shall adopt regulations setting forth procedures for determining the cooling capacity rating, wattage rating and estimated yearly cost of electricity necessary to operate room air conditioners.

(b) In determining procedures for estimating the yearly cost of electricity necessary to operate room air conditioners, the commissioner may use such published electric rate or rates, hours of operation, and average thereof as he or she deems reasonable.