The Ontario Building Code | Installation – General
6.2.1.8. installation – General
(1) Equipment requiring periodic maintenance and forming part of a heating, ventilating or air-conditioning system shall be installed with provision for access for inspection, maintenance, repair and cleaning.
(2) Mechanical equipment shall be provided with guards to prevent injury.
(3) Heating, ventilating or air-conditioning systems shall be protected from freezing if they may be adversely affected by freezing temperatures.
In Plain Language
Equipment requiring periodic maintenance as part of an HVAC system must be installed with adequate provision for access, so routine servicing doesn't require dismantling parts of the building to reach the equipment.
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.