It shall be the duty of every person who shall have contracted or shall be otherwise bound or legally obligated to heat or to furnish heat for any building, part of any building, apartment or space occupied as a home or place of residence of one or more persons, or as a business establishment where one or more persons are employed, to so heat or to so furnish heat to every occupied portion of such building, so that minimum temperature of 68° F. is maintained therein at all times; provided, however, that the provisions of this section shall not apply to buildings or parts thereof used and occupied for trades, business or occupations where high or low temperatures are essential for the business or occupation.
For the purpose of this article, wherever any building or part thereof so concerned is heated by means of a furnace, boiler or other apparatus under the control of the owner, agent or lessor, occupant, said owner, agent or lessor shall be deemed to have contracted, undertaken or bound himself or herself to furnish heat in accordance with the provisions of this article.
With respect to the obligation or duty to furnish heat to or in a building, apartment or portion thereof, occupied as a home or place of residence, the term "at all times," as used in this article, shall mean the time between the hours of 6:00 a.m. and 10:00 p.m. from September 15 to May 15. With respect to the obligation or duty to furnish heat to a building or portion thereof used and occupied as a business establishment, the term "at all times," as used in this article, shall mean the usual working hours established and maintained in said building or portion thereof so involved.
The term "contracted," as used in this article, shall be taken to mean and include an obligation arising by a written, verbal or implied contract; and the presence of heating outlets, radiators, risers or returns in any hall or apartment, subdivision of a house, shall be prima facie evidence of an implied contract.
At no time, however, shall the minimum temperature be permitted to fall below 65° F. in any building, apartment, part of any building or apartment or other space wherein or wherefor there shall be any obligation to furnish heat. It shall be the duty of every person who shall have such obligation to so furnish such heat, to so maintain the same in accordance with this and all other sections of this article.