Every owner or operator of any dwelling who rents, leases or lets for human habitation any dwelling unit contained within such dwelling on terms, either expressed or implied, to supply or furnish heat to the occupants thereof, shall maintain therein a minimum temperature of 70 degrees Fahrenheit, between the hours of 6:30 in the morning and 10:00 in the evening of each day whenever the outdoor temperature shall fall below 50 degrees Fahrenheit during the aforesaid hours and not less than 60 degrees Fahrenheit, between the hours of 10:00 p.m. and 6:30 a.m. Whenever a dwelling is heated by means of a furnace, boiler or other heating apparatus under the control of the owner or operator of the dwelling, such owner or operator, in the absence of a written contract or agreement to the contrary, shall be deemed to have contracted, undertaken or bound himself to furnish heat in accordance with the provisions of this section to every dwelling unit which contains radiators, furnace heat duct outlets or other heating apparatus outlets, and to every communal bathroom and communal toilet room located within such dwelling.
(1964 Code, § 12A-18)