Directive: Requirements for vented and ventless temporary portable/construction heaters



Reference number
D-G5 070215 3
Revision Number
Revision 2

This directive clarifies requirements for the use and operation of temporary portable/construction gas heaters and the qualification of individuals required to install this type of equipment.

Specific details

Companies that maintain and lease out or rent out temporary portable/construction gas heaters must hold an appropriate operating permit as detailed under section 28 of the Gas Safety Regulation (GSR). Rental heater companies must comply with GSR Schedule sections 4 and 5 in addition to the associated requirements of CSA B149.1, Natural gas and propane installation code.

Ventless temporary portable/construction gas heaters bearing a current temporary heater decal as required under section 31 (2) of the GSR connected to a propane cylinder do not require installation permits or installation by a qualified person as stated in section 5 of the GSR Schedule. Temporary portable/construction gas heaters compliant with GSR section 31 (2) satisfy any additional requirements under section 26 (2) (d) of the GSR only for those types of heaters.

When portable temporary/construction heaters are connected to a propane tank or onsite piping system, a Temporary Heat Installation Permit must be obtained and the work must be performed by a qualified person as stated in section 5 of the GSR Schedule.

Temporary gas heating equipment certified for indoor use with venting attached must be connected to a venting system, vented to the outside and installed by a qualified individual in accordance with sections 6 and 7 of the GSR. An appropriate installation permit is required for temporary heaters connected to a venting system as detailed in section 17 of the Safety Standards General Regulation.


David Gionet
Provincial Safety Manager

Gas Safety Regulation
Safety Standards General Regulation
CSA B149.1, Natural gas and propane installation code