Every dwelling shall have heating facilities which are capable of safely and adequately heating all habitable rooms, bathrooms and water closet compartments within its walls to a temperature of at least seventy degrees Fahrenheit at a distance of eighteen inches above floor level when the outside temperature is minus eleven degrees Fahrenheit. Portable heating equipment employing a flame and heating equipment using gasoline or kerosene do not meet the standards of this chapter and are prohibited. (Ord. 1977-14 § 10-7, 1977)