The Ontario Building Code | Air Washers and Evaporative Cooling Sections or Towers
6.2.3.14. Air Washers and Evaporative Cooling Sections or Towers
(1) The filter and water evaporation medium of every air washer and evaporative cooling section enclosed within a building shall be made of noncombustible material.
(2) Sumps for air washer and evaporative cooling sections shall be constructed and installed so that they can be flushed and drained.
(3) Evaporative cooling sections or towers shall comply with the requirements of nfpa 214, "water-Cooling Towers".
In Plain Language
Air washers and evaporative cooling sections or towers must meet specific design and construction requirements addressing both their mechanical function and the moisture and biological growth risks these systems can create.
This is a plain-language summary of the 2012/2017 Ontario Building Code text above, for general understanding only and not a substitute for the Code. Always confirm current requirements against the 2024 edition (O.Reg. 163/24) or a qualified professional before construction.