9.32.1. General

9.32.1. General
9.32.1.1. Application
  1. This Section applies to the ventilation of rooms and spaces in residential occupancies.
  2. Ventilation of all other occupancies shall comply with Part 6.
  3. A storage garage for up to 4 motor vehicles that serves a residential occupancy may be considered to be part of that occupancy.
  4. Systems used for ventilation shall conform to the energy efficiency requirements in Section 9.36.
9.32.1.2. Required Ventilation
  1. Every residential occupancy shall incorporate
    1. provisions for non-heating-season ventilation in accordance with Subsection 9.32.2., and
    2. except as required by Sentences (2) and (3), if supplied with electrical power and a heating system, provisions for heating-season ventilation in accordance with Part 6.
  2. A self-contained heating-season ventilation system serving a single dwelling unit shall comply with Subsection 9.32.3. (See Note A-9.32.1.2.(2).)
  3. In houses that contain a secondary suite, heating-season ventilation need not be provided for
    1. exits,
    2. public corridors, and
    3. ancillary spaces that are not within a dwelling unit, except as provided in Sentence (4). (See Note A-9.32.1.2.(2).)
  4. Where ancillary spaces described in Clause (3)(c) contain exhaust devices, these spaces shall be provided with make-up air in accordance with Article 9.32.3.8.
9.32.1.3. Venting of Laundry-Drying Equipment
  1. Exhaust ducts or vents connected to laundry-drying equipment shall discharge directly to the outdoors.
  2. Exhaust ducts connected to laundry-drying equipment shall be
    1. independent of other exhaust ducts,
    2. accessible for cleaning, and
    3. constructed of a smooth corrosion-resistant material. (See Note A-9.32.1.3.(2).)
  3. Where collective venting of multiple installations of laundry-drying equipment is used, the ventilation system shall
    1. be connected to a common exhaust duct that is vented by one central exhaust fan and incorporates one central lint trap,
    2. include an interlock to activate the central exhaust fan when laundry-drying equipment is in use, and
    3. where required by Article 9.32.3.8., be provided with make-up air.