Permits and Regulations for the installation of a heat pump or air conditioning unit in Saint-Laurent
Understanding the Obligations Before Installing an HVAC System
At AirGreen , we believe that proper installation is the key to lasting and safe comfort. Before undertaking any heat pump or air conditioning installation project in the Saint-Laurent borough, it is essential to know the municipal and provincial regulations that govern this work.
Permits required in Saint-Laurent
When a permit is required
According to the regulations in force of the City of Montreal , a permit is required for the installation of a heat pump or a permanent air conditioning unit when the equipment is installed outside a building for commercial, industrial or institutional use .
No permit is required for exclusively residential buildings . However, even without a permit requirement, the installation must comply with zoning regulations and certain siting and noise standards .
Conditions to be respected
Zoning and Location Regulations
Heat pumps and air conditioners are considered mechanical equipment . Their installation must therefore be carried out in compliance with the borough's zoning regulations , in particular:
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Respect for minimum distances from property boundaries.
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Installation in a location not visible from the public highway when possible.
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Preservation of the architectural harmony and character of the district.
Sound level
The device's technical data sheets must specify the noise level generated . The installation must comply with the maximum noise levels permitted by the City of Montreal's noise regulations.
Cost and duration of the permit
The cost of a permit for installing a heat pump or air conditioning unit in Saint-Laurent is $512 per unit (taxes included) .
Once the permit is obtained, the owner has 6 months to complete the work. After this period, a new application may be required.
Documents required for the application
Before submitting your application to the Borough of Saint-Laurent, prepare the following documents:
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Scaled implementation plan
Showing the property boundaries, existing building and intended location of the device. -
HVAC System Data Sheets
Specifying the characteristics of the heat pump or air conditioner, including the noise level . -
Certificate of location
Allowing the borough to verify the compliance of the installation with zoning.
Procedure for obtaining a permit
Steps to follow
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Contact the borough of Saint-Laurent before any installation.
You can do this:-
By phone at 311 (Montreal)
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In person at the borough service point
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Submit your complete file with the required documents.
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Wait for official validation before proceeding with the installation.
Concrete example: residential installation in Saint-Laurent
For the owner of a single-family home in the Bois-Franc sector, no permit application is required for a residential wall-mounted heat pump. However, compliance with noise and location regulations remains mandatory.
Conversely, a business on Côte-Vertu Boulevard must obtain a municipal permit before any outdoor installation.
Common Mistakes to Avoid
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Installing the device too close to the property line without respecting the minimum distance.
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Neglecting to declare the noise level in the application.
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Do not check whether the device is visible from the street , which may contravene town planning regulations.
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Perform the installation before obtaining the official permit .
Your Responsibility / Our Support
Your Responsibility
It is important to note that compliance with all applicable rules, permits and regulations remains the responsibility of each customer .
Although we at AirGreen are always available to provide guidance and advice, it is your responsibility to ensure that your project complies with local requirements and that the necessary permits have been obtained before work begins.
Unless otherwise stated in our contract, the responsibility for obtaining permits and ensuring the compliance of the installation lies with the customer.
Our Support
At AirGreen , we believe that a successful installation requires transparency and compliance .
Our team is here to guide you , inform you and support you in understanding the administrative procedures related to your HVAC project.
We help you identify applicable obligations and communicate effectively with municipal services when necessary.
If you have any questions, please don't hesitate to contact us —we're here to make your experience simple, clear, and compliant .
Call to action
At AirGreen , we support our customers at every stage of their efforts for compliant and sustainable HVAC installations .
Contact us today to discuss your installation project in Montreal, Laval, Longueuil, on the North Shore or the South Shore .