1. (a) Except as provided in subsections (b) and (c) of this section, there must be a carbon monoxide alarm installed in a central location outside of each sleeping area within a dwelling subject to this subtitle.

2. (b) For a hotel or a lodging or rooming house, on or after April 1, 2017, there must be a carbon monoxide alarm installed within the dwelling, as follows:

   1. (1) on the wall inside each guest room that:

      1. (i) contains a device that emits carbon monoxide;
      2. (ii) is adjacent to a room or area that contains a device that emits carbon monoxide;
      3. (iii) is adjacent to an enclosed unventilated attached garage; or
      4. (iv) is connected by ductwork to an enclosed unventilated attached garage or room or area that contains a device that emits carbon monoxide; and

   2. (2) on a wall in each room or area that:

      1. (i) contains a device that emits carbon monoxide;
      2. (ii) is adjacent to a room or area that contains a device that emits carbon monoxide; or
      3. (iii) is adjacent to an enclosed unventilated attached garage.

3. (c) For a rental dwelling unit, on or after April 1, 2018, there must be a carbon monoxide alarm installed within the dwelling as follows:

   1. (1) outside and in the immediate vicinity of each separate sleeping area; and
   2. (2) on every level of the unit, including the basement.
4. (d) Notwithstanding subsections (a), (b), and (c) of this section, if there is a centralized alarm system that is capable of emitting a distinct and audible sound to warn all occupants, the owner of a dwelling may install a carbon monoxide alarm within 25 feet of any carbon monoxide-producing fixture and equipment.

Added by Acts 2007, c. 401, § 1, eff. Oct. 1, 2007. Amended by Acts 2015, c. 151, § 1, eff. May 12, 2015; Acts 2016, c. 174, § 1, eff. Oct. 1, 2016; Acts 2016, c. 175, § 1, eff. Oct. 1, 2016.